CN104283818A - Network device and method for outputting data to bus with data bus width at each cycle by generating end of packet and start of packet at different cycles - Google Patents
Network device and method for outputting data to bus with data bus width at each cycle by generating end of packet and start of packet at different cycles Download PDFInfo
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- CN104283818A CN104283818A CN201410320279.1A CN201410320279A CN104283818A CN 104283818 A CN104283818 A CN 104283818A CN 201410320279 A CN201410320279 A CN 201410320279A CN 104283818 A CN104283818 A CN 104283818A
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Abstract
A method used in a network device for outputting data to a bus with a data bus width at each cycle includes: using a packet generator for generating idle data after an end of packet for a packet at a cycle and generating a start of packet for a next packet at a different cycle; and using an inter-packet gap (IPG) generator for receiving data transmitted from the packet generator, dynamically writing the received data into the buffer, and inserting a gap of idle data between the end of packet and the start of packet according to the end of packet and the idle data generated by the packet generator.
Description
Technical field
The priority of the United States Patent (USP) provisional application submitted in the application's request on July 11st, 2013 numbers 61/845,368, and the full text of this application is in this as quoting basis.
technical field
The present invention has about express network.Specifically, have about package transmission in a high-speed network.
Background technology
Generally, the legacy network unit being applied to an express network (such as 40GHz Ethernet or 100GHz Ethernet) is configured to produce multiple package to this express network, and between two continuous packages, produce idle data (idle data).The quantity of the idle data produced between package, the quantity of such as idle bytes is pre-configured.And the quantity of configuration is less than the quantity of whole bytes that legacy network unit produced in each cycle (cycle).Therefore, for legacy network unit, the package that may produce current package within identical cycle terminates and the package of next package starts.For legacy network unit, design package generation mechanism is very difficult.In addition, the idle bytes designing fixed qty between every two packages also may be unpractiaca.
Summary of the invention
An object of the present invention is to provide a kind of network equipment and application method in a network device, by producing the end of package and the beginning of package in the different cycles, and dynamic conditioning the idle bytes exporting varying number is inserted between two packages as a gap (gap), to export the data/address bus that data to have data/address bus frequency range in each cycle, thus solve technical problem as above.
According to embodiments of the invention, a kind of method used in a network device is proposed, be used for exporting data to bus in each cycle with a data bus bandwidth, the method comprises: use the package of the package of package generator in one-period terminate after produce idle data, and to start at the package that different cycle produces next package; And use a package gap generator to receive the next data of this package generator transmission, the data that dynamic write receives are to this buffer, and terminate according to this package and this idle data that this package generator produces, insert gap to this package comprising this idle data and to terminate and between this package starts.
According to another embodiment of the present invention, a kind of network equipment is proposed, be used for exporting data to bus in each cycle with a data bus bandwidth, this network equipment comprises: package generator, after terminating at the package of a package, produce idle data, and start at the package that different cycle produces next package; And package gap generator, be coupled to this package generator, for receiving the data from the transmission of this package generator, the data that dynamic write receives are to buffer, and terminate according to this package and this idle data that this package generator produces, insert gap to this package comprising this idle data and to terminate and between this package starts.
Package generator of the present invention to terminate and the package of next package starts at the package that the different cycles produces current package, and package gap generator dynamic conditioning and the idle bytes exporting varying number are inserted between two packages as a gap.Said method and network equipment effectively can reduce the circuit cost of package generator and meet the requirement of standard IEEE 802.3 simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the network equipment according to first embodiment of the invention.
Fig. 2 A is illustrating of the data that produce at the different cycle C0 – C5 of clock CLK of the package generator of Fig. 1.
Fig. 2 B is when data write package gap generator, for the schematic diagram of the corresponding memory address of the citing data write buffer of the different cycle C0 – C5 generation of the package generator shown in Fig. 1 shown in Fig. 2 A.
Fig. 2 C is that illustrational shown in Fig. 2 B is selected and the schematic diagram of the data result transmitted by package gap generator.
Fig. 2 D is that another of the data that produce at the different cycle C0 – C5 of clock CLK of the package generator of Fig. 1 illustrates.
Fig. 3 A is when defect idle count is less than or equal to 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.
Fig. 3 B is when defect idle count is greater than 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.
Fig. 4 A is presented at the one-period receiving EOP according to the embodiment shown in Fig. 1, and package gap generator is at the flow chart of this period treatment data manipulation.
Fig. 4 B is presented at next cycle of the one-period receiving EOP according to the embodiment shown in Fig. 1, and package gap generator is at the flow chart of this next period treatment/output data manipulation.
Fig. 5 is the structural representation of the network equipment according to second embodiment of the invention.
Fig. 6 A is illustrating of the data that produce with higher frequency FW at the different cycle C0 – C5 of clock CLK of the package generator of Fig. 5.
Fig. 6 B is when data write package gap generator, for the schematic diagram of the corresponding memory address of the citing data write buffer of the different cycle C0 – C5 generation of the package generator shown in Fig. 5 shown in Fig. 6 A.
Fig. 7 A is according to the embodiment shown in Fig. 5, when defect idle count is less than or equal to 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.
Fig. 7 B is according to the embodiment shown in Fig. 5, when defect idle count is greater than 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.
Fig. 8 is the structural representation of the network equipment according to third embodiment of the invention.
Embodiment
Fig. 1 is the structural representation of the network equipment 100 according to first embodiment of the invention.Network equipment 100 comprises package generator 105, package gap generator (inter-pack gap, IPG generator) 110, and buffer 115.Network equipment 100 entirety couples (but be not limited to entirety couple) to an interface circuit (interface circuit) 120 and a bus (bus) 125.Network equipment 100 is used to produce data (such as package) to bus according to IEEE802.3 standard in the different cycles.For each package, network equipment 100 produces the end (can be abbreviated as EOP) of the beginning (can be abbreviated as SOP) of package, lead code (preamble), packet data and package.In addition, the explanation of establishing criteria IEEE802.3, network equipment 100 produces and/or inserts (insert) enough idle datas (such as idle bytes) between every two continuous print packages.Network equipment 100 can produce/insert enough idle bytes to meet the demand of IEEE802.3 standard.The quantity of the idle bytes inserted between every two continuous print packages is determined by network equipment 100.For the different cycles, the quantity of idle bytes is change, instead of changeless.Network equipment 100 arranges the quantity of idle bytes, makes it drop within a scope be made up of a maximum and minimum value.In addition, the par of the idle bytes for different package of network equipment 100 setting meets the requirement of standard IEEE 802.3.For example, the scope that network equipment 100 arranges the quantity of idle bytes for from 5 bytes (minimum idle bytes quantity) to 19 bytes (maximum idle bytes quantity), obtains average 12 idle bytes and meets the requirement of IEEE802.3 standard.But this is not restriction of the present invention.
Network equipment 100 produces data (comprising package and idle bytes), transfers to bus 125 by interface circuit 120.W*CS represents the data/address bus frequency range being used for transferring data to bus 125, and CS represents the quantity of the data byte of a data line, and W represents the quantity of the data line in one-period.The data that network equipment 100 produces are cushioned by buffer 115, then read and interface circuit 120 write bus 125 by having data/address bus frequency range W*CS from buffer 115.In order to effectively reduce circuit cost, in a first embodiment, network equipment 100 configures package generator 105 and produces the data more data more corresponding than data/address bus frequency range W*CS in each cycle, and configures package gap generator 110 to write all packet datas and suitably to write part idle bytes.Package gap generator 110 filters out a part of idle bytes produced by package generator 105.Specifically, package generator 105 produces data (comprising package and idle data) with wider data/address bus frequency range (W+EB) * CS, and wherein EB*CS represents the additional data produced in each cycle by package generator 105.Package gap generator 110 transmits all packet datas at one-period, and only makes the idle bytes of a part pass through, and is not that all idle bytes produced by package generator 105 are passed through.Package gap generator 110 writes to buffer 115 for part idle bytes enable (enable) data selected equivalently, and for nonoptional part idle bytes forbidden energy (disable) data write.The idle bytes of filtering/selecting and packet data transfer to buffer 115 by package gap generator 110 and cushion, and interface circuit 120 sense data from buffer 115, and write data to the bus 125 with data/address bus frequency range W*CS.Therefore, network equipment 100 can produce packet data and enough idle datas, and transfers to bus 125 according to the data/address bus frequency range W*CS specified by IEEE802.3 standard.When buffer 115 be quota or close to quota time, package generator 105 stops data producing.Decide whether buffer 115 is quotas by package gap generator 110, and if package gap generator 110 determines that buffer 115 is quotas, package gap generator 110 notifies package generator 105 by transmission forbidden energy notification signal (disable notification signal).The multiple modification of this embodiment also within the scope of the invention.
Data/address bus frequency range W*CS, for example, comprises each cycle 24 data byte, i.e. each cycle 3 data lines, and each data line comprises 8 data bytes.But above-mentioned citing is only and illustrates, and be not used to limit the present invention.Package generator 105 also can in the more data of each cycle generation more than 3 data lines (i.e. 24 bytes).In a first embodiment, package generator 105 produces four data lines (namely altogether 32 bytes) in each cycle.Namely above-mentioned EB equals 1.32 bytes in each cycle can comprise packet data, the preamble of a part, EOP, SOP and/or idle bytes etc.Compared with data/address bus frequency range W*CS, package generator 105 further produces a data line in each cycle.In one cycle, when package generator 105 produces EOP for current package, package generator 105 fills remaining byte space with idle bytes in this cycle after EOP.Package generator 105, in this cycle, produces idle data after EOP, and produces the SOP of next package different cycle.
In addition, package generator 105 determines whether producing idle bytes at next cycle according to the quantity in the remainder bytes space in this cycle after EOP.If the quantity in remainder bytes space is greater than or equal to the minimum idle bytes (such as five bytes) of idle bytes scope as above, package generator 105 determines not produce idle bytes at next cycle, and starts in next cycle the SOP producing next package.If the quantity in remainder bytes space is less than minimum idle bytes (such as five bytes), package generator 105 determines to produce 32 idle bytes in next cycle, and one-period after next cycle start the SOP producing next package.Therefore, after generation EOP, package generator 105 is set to produce idle data to fill remainder bytes space in the same cycle, and starts different cycle the SOP producing next package.Because package generator 105 was not set to produce the EOP of a package and the SOP of next package in identical cycle, framework proposed by the invention can reduce the cost of package generator 105 effectively.The cycle that EOP and SOP is corresponding different respectively.
Fig. 2 A is illustrating of the data that produce at the different cycle C0 – C5 of clock CLK of the package generator 105 of Fig. 1.As shown in Figure 2 A, at cycle C0, package generator 105 produces SOP S1 for current package, the preamble P of current package, and packet data D1.At cycle C1 and C2, package generator 105 produces the packet data D1 of current package.At cycle C3, package generator 105 produces packet data D1, the EOP T1 of current package and idle data I1, wherein idle data I1 is after the EOP T1 of current package, and package generator 105 utilizes the remainder bytes space after idle data (i.e. idle bytes) I1 filling EOP T1.Cycle C4 after cycle C3, package generator 105 produces SOPS2, the preamble P of next package and the packet data D2 of next package.At cycle C5, package generator 105 produces packet data D2.Should be noted that above-mentioned illustrating not is restriction of the present invention.In other examples, package generator 105 alternately produces idle data I1 at cycle C4, and produces SOP S2, preamble P and the packet data D2 of next package at cycle C5.
Fig. 2 D is that another of the data that produce at the different cycle C0 – C5 of clock CLK of the package generator 105 of Fig. 1 illustrates.The SOP S2 of next package occurs at next cycle C4 of cycle C3, or occurs at the C5 of next cycle again of next cycle C4.Package generator 105 produces idle data I1 at cycle C4.Namely, in this illustrates, the data that cycle C4 produces are all idle bytes.Above-mentioned correction also within the scope of the invention.As mentioned above, package generator 105 is set to produce idle data at cycle C3 and fills the remainder bytes space after EOP T1 with idle data, and starts different cycle (such as C4 or C5) SOP producing next package.Package generator 105 does not produce EOP T1 and SOP S2 within the identical cycle.Passage (Lanes) 0 – 31 represents wider data/address bus frequency range (W+EB) * CS, and wherein W*CS comprises 24 bytes and EB*CS comprises 8 bytes.
Fig. 2 B is when data write package gap generator 110, for the schematic diagram of the corresponding memory address of the citing data write buffer of the different cycle C0 – C5 generation of the package generator 105 shown in Fig. 1 shown in Fig. 2 A.As shown in Figure 2 B, for example, the data (comprising packet data D1, the EOP T1 of current package and a part of idle data I1) that package generator 105 produces at cycle C3 are positioned at the row with initial address 0x60-0x78.This part idle data I1 that package generator 105 produces at cycle C3 is positioned at the row with initial address 0x70 – 0x78, and is filtered out by package gap generator 110.
As mentioned above, in order to reduce circuit cost and meet the requirement of IEEE802.3 standard, package generator 105 produces the more data of the data volume specified than standard IEEE 802.3 in each cycle.For the byte of packet data, package gap generator 110 transmits the packet data of all package generator 105 generations to buffer 115.For the byte of idle data, package gap generator 110 optionally filters out a part of idle bytes that package generator 105 produces, and selects and transmit (transfer/transmit) selected idle bytes to buffer 115.Package gap generator 110 is set to the part idle data of transmission package generator 105 generation to buffer 115.Package gap generator 110 does not transmit all idle datas of package generator 105 generation to buffer 115.The quantity transferring to the part idle data of buffer 115 is dynamically determined by the EOPT1 of package gap generator 110 according to current package.For example, as shown in Figure 2 B, package generator 105 produces the idle data of EOP and 30 idle bytes of the packet data of 1 byte, 1 byte at cycle C3, and the data produced correspond respectively to the initial address 0x60-0x78 of 4 parallel row, as shown in the top of Fig. 2 B.The idle data being positioned at the row of initial address 0x70 and 0x78 is filtered out by package gap generator 110, and the data being positioned at the row of initial address 0x60 and 0x68 are selected by package gap generator 110 and transfer to buffer 115.
Fig. 2 C is that illustrational shown in Fig. 2 B is selected and the schematic diagram of the data result transmitted by package gap generator 110.As shown in Figure 2 C, the gap of the idle data of current package and next package comprises 15 bytes.Be positioned at the SOP S2 of idle bytes by next package of the idle data I1 of initial address 0x70 and 0x78, the lead code p of next package and the packet data D2 of next package to replace.In another illustrates, package gap generator 110 transmits the idle bytes of varying number to buffer 115.Package gap generator 110 is set between every two continuous print packages dynamical output, generation or inserts the idle bytes of a varying number, meets the average requirement producing the standard IEEE 802.3 of 12 idle bytes between two continuous print packages.
In the following description, the operation of package gap generator 110 is described in detail.Package gap generator 110 filter part idle bytes, thus make the quantity of the idle bytes be inserted between two continuous print packages meet the requirement of standard IEEE 802.3.Package gap generator 110 determines the quantity of the idle bytes between insertion two continuous print packages, according to the quantity of the remainder bytes in identical data line after EOP.When needing at every turn, package gap generator 110 produces the idle bytes of a data line further.If the quantity of the remainder bytes in identical data line after EOP is less than the quantity (such as 5) of the minimum idle bytes of regulation in standard IEEE 802.3, package gap generator 110 increases/produces a data line of idle bytes further to form idle bytes.If the quantity of the remainder bytes in identical data line after EOP is not less than the quantity (such as 5) of the minimum idle bytes of regulation in standard IEEE 802.3, the data that package gap generator 110 does not increase/produce idle bytes walk to residue idle bytes, but the package gap generator 110 setting quantity identical with the residue idle bytes space in data line after EOP forms idle bytes.For example, the quantity of the residue idle bytes of same data line after EOP equals 4, namely 5 are less than, package gap generator 110 increases the data line (i.e. 8 idle bytes) of an idle bytes to remaining 4 idle bytes, forms 12 idle bytes (the idle bytes quantity that namely average standard IEEE 802.3 specifies).In addition, for example, the quantity of the residue idle bytes of identical data line after EOP equals 7, is namely not less than 5, and package gap generator 110 uses 7 idle bytes spaces to form required idle bytes.
Package gap generator 110 is placed through average free byte quantity that the quantity of the idle bytes compared between insertion two continuous print packages and standard IEEE 802.3 specify and calculates and the quantity of cumulative defect idle bytes produces a defect idle count.It is noted that the quantity of defect idle bytes represents the difference of the par of the idle bytes in a gap between the quantity of idle bytes and two packages, and the representative of defect idle count is the current accumulation value of defect idle bytes.Once defect idle count is greater than or equal to this specific quantity, package gap generator 110 compensates the total number of idle bytes, and this package gap generator 110 is inserted into the idle bytes selected as above by the idle bytes increasing a specific quantity and compensates/adjust defect idle count.In this embodiment, the idle bytes specific quantity that package gap generator 110 is arranged is the quantity of a data line, namely 8.Each time when defect idle count and when being not less than 8, package gap generator 110 compensates the total number of the idle bytes between insertion two continuous print packages.It is noted that above-mentioned specific quantity is not a restriction of the present invention.Once defect idle count is not less than 8, package gap generator 110 increases by 8 idle bytes further to the idle bytes selected as above, forms the generation idle bytes (resultant idle bytes) between insertion two continuous packages.If defect idle count is less than the quantity (namely 8) of a data line, in this case, package gap generator 110 does not increase by 8 idle bytes and forms to the idle bytes selected the gap be made up of the idle bytes inserted between two packages.
In above-mentioned illustrating, if the quantity of the remainder bytes in identical data line after EOP is less than 5, the quantity of such as remainder bytes equals 3, and package gap generator 110 selects the data line of 3 idle bytes and an idle bytes followed by these 3 idle bytes.Therefore, 11 idle bytes selected by package gap generator 110.Other nonoptional idle bytes are filtered out by package gap generator 110 or ignore.Package gap generator 110, compared with par, calculates and determines that defect idle count equals 1.Package gap generator 110 is according to the preceding value of defect idle count and defect idle count, cumulative and obtain defect idle count.If in this case, the defect idle count of acquisition is less than 8, and package gap generator 110 uses 11 selected idle bytes to form the gap be made up of the idle bytes inserted between two packages.Therefore, in this illustrates, the total number inserting idle bytes between two continuous print packages equals 11.
But, if in this illustrates, defect idle count is not less than 8, package gap generator 110 increases by 8 idle bytes to 11 selected idle bytes further and produces 19 idle bytes, insert with compensating defective idle count, and use 19 idle bytes to form the gap be made up of the idle bytes inserted between two packages.After compensating defective idle count, defect idle count is recalculated by package gap generator 110.Therefore, the total number of the idle bytes be inserted between two continuous print packages equals 19.By calculating and the quantity of defect idle bytes and the quantity of compensating defective idle count, package gap generator 110 can produce/insert the idle bytes with par (namely 12) equivalently, meets the regulation of standard IEEE 802.3.
It should be noted that package gap generator 110 is used to transmit a part of idle data of package generator 105 generation to buffer 115, and filter out the remainder of the idle data that package generator 105 produces.Package gap generator 110 transmits all packet datas that package generator 105 produces.Packet data is not had to be filtered out by package gap generator 110.When package generator 105 produces SOP, preamble and packet data, package gap generator 110 transmits the data of four all data lines.When package generator 105 produces EOP at one-period, package gap generator 110 is used to hop data.Therefore, when package generator 105 produces the cycle of EOP, package gap generator 110 transmits the selection data comprising only a data line, two data lines, three data lines or four data lines produced by package generator 105.
Fig. 3 A is when defect idle count is less than or equal to 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.Fig. 3 B is when defect idle count is greater than 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.As shown in Figure 3A, the value representative of MOD is at the diverse location of one-period (the cycle C3 such as shown in Fig. 2 A) EOP in 4 data lines (i.e. 32 bytes).For example, as shown in Figure 2 A, the position of EOP T1 equals 1, and the value of MOD representative " 1 ".In addition, for example, the value " 0 " of MOD represents EOP in the beginning of 4 data lines and the end at 4 data lines respectively with " 31 ".EN_EOP representative is when EOP occurs, and package gap generator 110 exports the quantity of the data line of buffer 115 in this cycle.In different situations, the value 1 to 4 of EN_EOP shows that the size of data of package gap generator 110 output is from 1 data line (i.e. 8 bytes) to 4 data lines (i.e. 32 bytes) respectively.The value of IBN represents package gap generator 110 and whether produces the data line of idle bytes further in next cycle, and this next cycle is and then this cycle, wherein occurs at this cycle EOP.The value " 0 " of IBN represents package gap generator 110 does not produce idle bytes data line in next cycle, and produces the SOP of next package in next cycle.IBN value " 1 " represents package gap generator 110 and produces the idle bytes of 1 data line in next cycle further, this next cycle is and then after current period, wherein occur at current period EOP, and package gap generator 110 produces the SOP of next package at the one-period below in and then this next cycle.IS represents the idle bytes final amount be inserted in Feng Bao Inter gap, and the gap of this idle bytes be inserted into is that package gap generator selects the idle bytes of write to add that EOP is formed to current package.The minimum value of " IS " minimum idle count should be equaled, namely 5 in Fig. 3 A.The maximum of " IS " average free quantity should be equaled, namely 12 in Fig. 3 A.The defect idle bytes quantity of value representative compared with average free quantity (namely 12) of DS, i.e. the changing value of defect idle count.In Fig. 3 A, the minimum value of DS equals 0, corresponds to the value " 12 " of IS, and the maximum of " DS " in Fig. 3 A equals 7, corresponds to the minimum idle count specified by standard IEEE, and namely 5.
Therefore, when defect idle count is less than or equal to 8, package gap generator 110 can obtain enough idle bytes in this gap with reference to the look-up table shown in figure 3A, determine this cycle needs to transmit how many bytes, determine whether produce idle bytes further in next cycle, and recalculate defect idle count according to defect idle count.In this case, package gap generator 110 determines and the quantity of the idle bytes produced equals 12 or be less than 12.If the EOP of current package corresponds to the value " 6 " of MOD, package gap generator 110 is set to write two row data (i.e. 16 bytes) to buffer 115 in this cycle, and package gap generator 110 does not produce 32 idle bytes further in next cycle, but produces the SOP of next package in next cycle.In this illustrates, the value of " IS " corresponds to " 10 ", and the gap (comprising idle bytes and EOP) represented between two continuous print packages should comprise 10 bytes.Therefore, package gap generator 110 exports two row data (altogether 16 bytes), comprises the idle data of EOP and 9 byte of the packet data of 6 bytes, 1 byte.The data line of latter two idle bytes is filtered out by package gap generator 110.Defect idle count increases by 2, and the DS being 2 by value represents.In addition, in another illustrates, if the EOP of current package corresponds to the MOD of value for " 30 ", package gap generator 110 is set to the data of write 4 row (i.e. 32 bytes) to buffer 115 at current period, and package gap generator 110 produces 32 idle bytes in next cycle further, and following hard on the one-period after next cycle and producing the SOP of next package; Package generator 105 is set to produce 32 idle bytes in next cycle, and is following hard on the one-period after next cycle and produce the SOP of next package.The value of " IS " corresponds to " 10 ", and the gap (comprising the end of idle bytes and package) represented between two continuous print packages comprises 10 bytes.Therefore, package gap generator 110 exports 5 row data (altogether 40 bytes) at current period and next cycle, comprises the idle data of EOP and 9 byte of the packet data of 30 bytes, 1 byte.Filtered out by package gap generator 110 at the idle data of last 3 data lines in next cycle.Defect idle count increases by 2, represents with the DS be worth for " 2 ".
Look-up table shown in Fig. 3 B describes when defect idle count is greater than 8, the example of the different idle bytes quantity be inserted into.In the illustrating of Fig. 3 B, package gap generator 110 determines and the quantity of the idle bytes produced is greater than 12.As shown in Figure 3 B, the value representative of MOD is at the diverse location of one-period (the cycle C3 such as shown in Fig. 2 A) EOP in 4 data lines (i.e. 32 bytes).For example, as shown in Figure 2 A, the position of EOP T1 equals 1, and the value of MOD representative " 1 ".In addition, for example, the value " 0 " of MOD represents EOP in the beginning of 4 data lines and the end at 4 data lines respectively with " 31 ".Wherein, MOD4,12,20,24 should only deposit in figure 3 a, and are expressed as space in fig 3b.Its reason is, as the process description of Fig. 4 a, the handling process of embodiment described in the application is first query graph 3a, and adjustment defect idle count, if >8, just changes query graph 3B again.Under this flow process, because of Fig. 3 A Mod4,12,20, the DS=0 of 24, defect idle count can not increase, so can not go to find Fig. 3 B again.EN_EOP represents package gap generator 110 exports the data line of buffer 115 to quantity at current period.From 2 to 4, the value of EN_EOP shows that the size of data of package gap generator 110 output is from 2 data lines (i.e. 16 bytes) to 4 data lines (i.e. 32 bytes) respectively.The value of IBN represents package gap generator 110 and whether produces idle bytes in next cycle further, and package gap generator 110 produces how many bytes.
The value " 0 " of IBN represents package gap generator 110 does not produce idle bytes data line in next cycle, and produces the SOP of next package in next cycle.IBN value " 1 " represents package gap generator 110 and produces the idle bytes of 1 data line in next cycle further, and produces the SOP of next package at the one-period below in and then this next cycle.IBN value " 2 " represents package gap generator 110 and produces the idle bytes of 2 data lines in next cycle further, and produces the SOP of next package at the one-period below in and then this next cycle.The operation that package gap generator 110 produces the idle bytes of 1 data line further can be considered that package gap generator 110 selects 1 row idle bytes (8 idle bytes namely data line) in next cycle from the 4 row idle bytes that package generator 105 produces.The operation that package gap generator 110 produces the idle bytes of 2 data lines further can be considered that package gap generator 110 selects 2 row idle bytes (16 idle bytes namely data line) in next cycle from the 4 row idle bytes that package generator 105 produces.The quantity (8 idle bytes comprising initial selected idle bytes and increase further) of the idle bytes be inserted in the gap between 2 packages that the value representative of IG exports at package gap generator 110 adds EOP.The defect idle bytes quantity of value representative compared with average free quantity (namely 12) of DG.The value of DG represents defect idle count should reduce for negative.
As shown in Figure 3 B, when defect idle count is greater than 8, if the EOP of current package corresponds to the value " 6 " of MOD, package gap generator 110 is set to write three row data (i.e. 24 bytes) to buffer 115 at current period, and package gap generator 110 does not produce 32 idle bytes further in next cycle, but produces the SOP of next package in next cycle.The value of " IG " corresponds to " 18 ", and the gap (comprising idle bytes and EOP) represented between two continuous print packages should comprise 18 bytes.Therefore, package gap generator 110 exports the idle data of EOP and 17 byte that three row data (altogether 24 bytes) comprise the packet data of 6 bytes, 1 byte.Defect idle count reduces by 6, and the DG being-6 by value represents.In addition, in another illustrates, if the EOP of current package corresponds to the MOD of value for " 30 ", package gap generator 110 is set to the data of write 4 row (i.e. 32 bytes) to buffer 115 at current period, and package gap generator 110 selects 16 idle bytes in next cycle further from 32 idle bytes that package generator 105 produces, and following hard on the one-period after next cycle and producing the SOP of next package; Package generator 105 produces and is set to produce 16 idle bytes in next cycle, and is following hard on the one-period after next cycle and produce the SOP of next package.The value of " IG " corresponds to " 18 ", and the gap (comprising idle bytes and EOP) represented between two continuous print packages comprises 18 bytes.Therefore, package gap generator 110 exports at current period and next cycle the idle data that 6 row data (altogether 48 bytes) comprise the packet data of 30 bytes, the EOP of 1 byte and 17 bytes.Filtered out by package gap generator 110 at the idle data of last 2 data lines in next cycle.Defect idle count reduces 6, represents with the DG be worth for "-6 ".
Fig. 4 A is presented at the one-period receiving EOP according to the embodiment shown in Fig. 1, and package gap generator 110 is at the flow chart of this period treatment data manipulation.If can obtain similar result, be then not limited to the flow sequence shown in Fig. 4 A, therefore, other step also can be integrated into.Each step in Fig. 4 A is as detailed below:
Step 405A: start;
Step 410A: package gap generator 110 is by reference to the look-up table shown in Fig. 3 A, obtain the quantity of the idle bytes be inserted into, corresponding defect idle count and how many bytes should be written into buffer 115 according to the position calculation of EOP in 4 row data within the identical cycle, for example, package gap generator 110 can by reference to the look-up table shown in Fig. 3 A, and the value according to MOD obtains the quantity of the idle bytes be inserted into, corresponding defect idle count and how many bytes and should be written into buffer 115;
Step 415A: package gap generator 110 calculate corresponding defect idle count and previously cumulative defect idle count (i.e. defect idle count) with, adjust and defect idle count after obtaining adjustment, and check whether the defect idle count after adjustment is less than the byte quantity (namely 8) of 1 data line.If the defect idle count after adjustment is less than 8, then perform step 420A; Otherwise, flow performing step 425A;
Step 420A: package gap generator 110, according to the previous defect idle count of adjustment and the value of MOD, recalculates defect idle count by reference to the look-up table shown in Fig. 3 A;
Step 425A: package gap generator 110, by reference to the look-up table shown in Fig. 3 B, obtains the quantity of the idle bytes be inserted into, corresponding defect idle count and how many bytes should be written into buffer 115 according to the position calculation of EOP in 4 row data within the identical cycle.For example, package gap generator 110 can by reference to the look-up table shown in Fig. 3 B, and the value according to MOD obtains the quantity of the idle bytes be inserted into, corresponding defect idle count and how many bytes and should be written into buffer;
Step 430A: package gap generator 110 in the end of this cycle output byte and package to buffer 115; And
Step 435A: terminate.
Fig. 4 B was presented at according to next cycle at the current period of reception EOP of the embodiment shown in Fig. 1, and package gap generator 110 is at the flow chart of this next period treatment/output data manipulation.If can obtain similar result, be then not limited to the flow sequence shown in Fig. 4 B, therefore, other step also can be integrated into.Each step in Fig. 4 B is as detailed below:
Step 405B: start;
Step 410B: generator 110 inspection in package gap connects in the next cycle in the cycle receiving EOP, the quantity of the data line of idle bytes;
Step 415B: package gap generator 110 determines that the quantity of the data line of whether idle bytes is 0.If have the idle bytes of 0 data line, then process to step 425B; Otherwise this flow processing is to step 420B;
Step 420B: package gap generator 110 with idle bytes padding data, and produces the row enable signals that 1 has IBN value, carrys out controller buffer 115;
Step 425B: package gap generator 110 checks whether that next package is available.If available, handling process advances to step 430B; Otherwise handling process performs step 435B;
Step 430B: the value by arranging row enable signals with corresponding all data line total amounts, package gap generator 110 transmits all packet data bytes of next package received from package generator 105 to buffer 115;
Step 435B: the enable byte all with idle data transport of package gap generator 110, these idle datas are that package generator 110 produced in next cycle; And
Step 440B: terminate.
Fig. 5 is the structural representation of the network equipment 500 according to second embodiment of the invention.Network equipment 500 comprises package generator 505, package gap generator 510, and buffer 515.Network equipment 500 entirety couples (but be not limited to entirety couple) to an interface circuit 520, bus 525 and a clock generator 530.Network equipment 500 is used to the regulation of establishing criteria IEEE802.3, produces data (such as package) to bus 525 in the different cycles.For each package, network equipment 500 produces the beginning (can be abbreviated as SOP) of package, the end (can be abbreviated as EOP) of preamble, packet data and package.In addition, network equipment 500 produces and/or inserts enough idle datas (such as idle bytes) between every two continuous print packages.The quantity of the idle bytes inserted between every two continuous print packages is determined by network equipment 500.Network equipment 500 arranges the quantity of idle bytes, makes it drop within a scope be made up of a maximum and minimum value.In addition, network equipment 500 arranges the par of the idle bytes of different package to meet the regulation of standard IEEE 802.3.Network equipment 500 also produces data (comprising package and idle bytes) to bus 525 via interface circuit 520.W*CS represents the data/address bus frequency range being used for transferring data to bus 525.Therefore, the data that network equipment 500 produces are cushioned by buffer 515, then read and interface circuit 520 write bus 525 by having data/address bus frequency range W*CS from buffer 515.
Specifically, in a second embodiment, network equipment 500 configures package generator 505 and produces more data with a higher frequency of operation FM, and configures package gap generator 510 with this higher frequency of operation FM to write all packet datas and suitably to write part idle bytes.This higher frequency of operation FW is provided by clock generator 530, and in a second embodiment, equals (K+1)/K*F, and wherein K equals 4 and F represents a frequency of operation specified by standard IEEE 802.3 normally.For example, in the distance of 100GHz express network, F equals 521MHz, and therefore FW equals 652MHz.But, this not restriction of the present invention.
Package generator 505 produces package and idle data with higher frequency of operation FW, and package gap generator 510 transmits all packet datas with higher frequency of operation FW and make the idle bytes of part pass through, instead of all idle bytes produced by package generator 505 are passed through.When buffer 525 be quota or close to quota time, package generator 505 stops data producing.For example, in each cycle, package generator 505 produces the data of 3 row (i.e. 24 bytes), comprises package and/idle bytes.When package generator 505 produces the EOP of current package at one-period, package generator 505 fills the remainder bytes space after EOP in this cycle with idle bytes.Package generator 505 produces idle data (idle bytes) after the EOP in this cycle, and produces the SOP of next package different cycle.Package generator 505 determines whether producing idle bytes at next cycle according to the quantity in the remainder bytes space in this cycle after EOP.If the quantity in remainder bytes space is greater than or equal to the minimum idle bytes of idle bytes scope as above, package generator 505 determines not produce idle bytes at next cycle, and starts in next cycle the SOP producing next package.If the quantity in remainder bytes space is less than minimum idle bytes, package generator 505 determines to produce 24 idle bytes in next cycle, and one-period after next cycle start the SOP producing next package.Therefore, after generation EOP, package generator 505 is set to produce idle data to fill remainder bytes space in the same cycle, and starts different cycle the SOP producing next package.Because package generator 505 was not set to produce the EOP of a package and the SOP of next package in identical cycle, framework proposed by the invention can reduce the cost of package generator 505 effectively.The cycle that EOP and SOP is corresponding different respectively.
Interface circuit 520 is set to carry out sense data from buffer 515 with higher frequency of operation FW, and writes data to bus 525 with higher frequency of operation FW.In order to meet the regulation of standard IEEE 802.3, interface circuit 520 is set to enable or forbidden energy data write to bus 525.For example, every K+1 continuous print cycle, interface circuit 520 writes to bus 525 K cycle enable data, and 1 cycle forbidden energy data write.For the Ethernet of 100GHz, K equals 4.Therefore, the regulation of standard IEEE 802.3 is still met by the data of bus 525.
Fig. 6 A is illustrating of the data that produce with higher frequency FW at the different cycle C0 – C5 of clock CLK of the package generator 505 of Fig. 5.At cycle C0, package generator 505 produces SOP S1 for current package, the preamble P of current package, and packet data D1.At cycle C1 and C2, package generator 505 produces the packet data D1 of current package.At cycle C3, package generator 505 produces packet data D1, the EOP T1 of current package and idle data I1, wherein idle data I1 is after the EOP T1 of current package, and package generator 505 utilizes the remainder bytes space after idle data (i.e. idle bytes) I1 filling EOP T1.Cycle C4 after cycle C3, package generator 505 produces SOP S2, the preamble P of next package and the packet data D2 of next package.At cycle C5, package generator 505 produces packet data D2.Should be noted that above-mentioned illustrating not is restriction of the present invention.In other examples, package generator 505 produces idle data at cycle C3 and fills remainder bytes space after EOP T1, and produces the SOP S2 of next package different cycle (such as cycle C4 or cycle C5).Package generator 505 does not produce EOP T1 and SOP S2 within the identical cycle.Passage (Lanes) 0 – 23 representative comprises the data/address bus frequency range W*CS of 24 bytes.
Fig. 6 B is when data write package gap generator 510, for the schematic diagram of the corresponding memory address of the citing data write buffer of the different cycle C0 – C5 generation of the package generator 505 shown in Fig. 5 shown in Fig. 6 A.For example, the data (comprising packet data D1, the EOP T1 of current package and a part of idle data I1) that package generator 505 produces at cycle C3 are positioned at the row with initial address 0x48 – 0x58.This part idle data I1 that package generator 105 produces at cycle C3 is positioned at the row with initial address 0x50 – 0x58, and is filtered out by package gap generator 510.Fig. 6 C is that illustrational shown in Fig. 6 B is selected and the schematic diagram of the data result transmitted by package gap generator 510.As shown in Figure 6 C, the gap of the idle data of current package and next package comprises 7 bytes, comprises the EOP of the current package of 6 idle bytes and 1 byte.In another illustrates, package gap generator 510 transmits the idle bytes of varying number to buffer 515.Package gap generator 510 is set between every two continuous print packages dynamical output, generation or inserts the idle bytes of a varying number, meets the average requirement producing the standard IEEE 802.3 of 12 idle bytes between two continuous print packages.It should be noted that, the operation of package gap generator 510 is similar to the operation of the package gap generator 110 shown in Fig. 1, does not repeat them here.Compared with the operation of package gap generator 110, to be package gap generator 510 work under a higher frequency of operation FW for larger difference, and process 3 row data each cycles.
Fig. 7 A is according to the embodiment shown in Fig. 5, when defect idle count is less than or equal to 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.Fig. 7 B is according to the embodiment shown in Fig. 5, when defect idle count is greater than 8, illustrates according to different EOP, the gap comprising idle bytes with compared with average free byte quantity defect idle bytes quantity between the look-up table of relation.The definition of the value that the definition of the value of MOD, EN_EOP, IBN, IS, DS, IG and DG is corresponding to Fig. 3 B with Fig. 3 A is similar, does not repeat them here.A difference is that the look-up table shown in Fig. 7 A and Fig. 7 B is used with higher frequency of operation FW each cycle process 24 byte by package gap generator 510.To be package gap generator 110 use with during lower frequency of operation each cycle process 32 byte look-up table shown in Fig. 3 A and Fig. 3 B.
In another illustrates, an elder generation is set and closely first goes out (first-in-first-out, FIFO) circuit between buffer and interface circuit.Fig. 8 is the structural representation of the network equipment 800 according to third embodiment of the invention.Network equipment 800 comprises package generator 805, package gap generator 810, buffer 815 and fifo circuit 817.Network equipment 800 is that entirety couples (but be not limited to entirety couple) to an interface circuit 820, bus 825 and a clock generator 830.Network equipment 800 is used to the regulation of establishing criteria IEEE802.3, produces data (such as package) to bus 825 in the different cycles.For each package, network equipment 800 produces the beginning (can be abbreviated as SOP) of package, the end (can be abbreviated as EOP) of preamble, packet data and package.In addition, network equipment 800 produces and/or inserts enough idle datas (such as idle bytes) between every two continuous print packages.The quantity of the idle bytes inserted between every two continuous print packages is determined by network equipment 800.Network equipment 800 arranges the quantity of idle bytes, makes it drop within a scope be made up of a maximum and minimum value.In addition, network equipment 800 arranges the par of the idle bytes of different package to meet the regulation of standard IEEE 802.3.Network equipment 800 also produces data (comprising package and idle bytes) via interface circuit 820 to bus 825.W*CS represents the data/address bus frequency range being used for transferring data to bus 825.Therefore, the data that network equipment 800 produces are cushioned by buffer 815, then read and interface circuit 820 write bus 825 by having data/address bus frequency range W from buffer 815.Data with higher frequency of operation FW sense data from buffer 815, and are write fifo circuit 817 with frequency of operation FW by fifo circuit 817.Interface circuit 820 with normal frequency F sense data from fifo circuit 817, and with normal frequency F by data write bus.Therefore, do not need the data access rate of bus 825 to be increased to higher frequency of operation FW from normal frequency of operation F.
In addition, embodiment as above is not limited to the Ethernet of 100GHz, and can be applied in other Ethernet, such as 40GHz Ethernet or 400GHz Ethernet.Above-described execution mode can be applied to the Ethernet of all high speeds.
Although the present invention discloses as above in a preferred embodiment thereof, but this better embodiment and be not used to limit the present invention, those skilled in the art do not depart from the spirit and scope of the present invention, and all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (21)
1. the method used in a network device, be used for exporting data to bus in each cycle with a data bus bandwidth, the method comprises:
Use the package of the package of package generator in one-period terminate after produce idle data, and to start at the package that different cycle produces next package; And
Package gap generator is used to receive the data come from the transmission of this package generator, the data that dynamic write receives are to buffer, and terminate according to this package and this idle data that this package generator produces, insert gap to this package comprising this idle data and to terminate and between this package starts.
2. the method for claim 1, is characterized in that, this one-period is the period 1 and this different cycle is second round after this period 1; And should in one-period, use package generator to produce idle data after the package of a package terminates, and the step that the package producing next package different cycle starts comprises:
This idle data is produced after this package in this period 1 terminates; And
This second round start produce this package and start.
3. the method for claim 1, is characterized in that, this one-period is the period 1 and this different cycle is period 3 after second round after this period 1; And should in one-period, use package generator to produce idle data after the package of a package terminates, and the step that the package producing next package different cycle starts comprises:
After this package in this period 1 terminates and produce this idle data this second round; And
This period 3 start produce this package and start.
4. the method for claim 1, is characterized in that, comprises further:
Using this package generator to produce comparison in each cycle should the more data of data of data/address bus frequency range.
5. method as claimed in claim 4, it is characterized in that, the data produced in each cycle correspond to the size of data line, and the line number amount that the size of this data line equals this data/address bus frequency range adds a data line.
6. the method for claim 1, is characterized in that, the step that this insertion comprises the gap of idle data comprises:
Terminate according to this package and this package generator produce this idle data, determine the quantity of the idle bytes of the idle data in this gap; And
According to the quantity of this idle bytes, select this package to terminate and this idle data of a part after this package terminates forms this gap between two continuous print packages, and export this package and terminate and this part idle data.
7. method as claimed in claim 6, it is characterized in that, the step of the quantity of this decision idle bytes comprises:
This package according to this package terminates the initial number carrying out computation-free byte;
By comparing the par of this idle bytes initial number and idle bytes, calculate defect idle count;
After the package of a previous package terminates, by increasing this defect idle count to defect idle count, to add up this defect idle count for idle bytes;
According to the defect idle count that this is cumulative, a look-up table in the look-up table that optionally reference two is different decides the quantity of the idle bytes in this gap between two packages;
First look-up table wherein in these two look-up tables is relevant to the situation that the quantity of idle bytes is less than this par, and a second look-up table in these two look-up tables is relevant to the situation that the quantity of idle bytes is not less than this par.
8. method as claimed in claim 7, is characterized in that, the step that a look-up table in this look-up table that optionally reference two is different decides the quantity of the idle bytes in this gap between two packages comprises:
When this defect idle count is less than or equal to a number of thresholds, package by reference to this first look-up table and this package terminates the quantity determining this idle bytes, wherein this defect idle count is increased, and the quantity of idle bytes in this gap between these two the continuous print packages determined is not more than this par; And
When this defect idle count is greater than this number of thresholds, package by reference to this second look-up table and this package terminates to determine and compensates the quantity of this idle bytes, wherein this defect idle count is reduced, and determines that the quantity of the idle bytes in this gap between these two continuous print packages is greater than this par.
9. method as claimed in claim 8, it is characterized in that, this number of thresholds is the quantity of the byte of a data line.
10. the method for claim 1, is characterized in that, should in one-period, use package generator to produce idle data after the package of a package terminates, and the step that the package producing next package different cycle starts comprises:
Use this package generator with a frequency higher than this data/address bus frequency range speed to produce data, within this cycle, after this package terminates, produce this idle data, and start at this package that this different cycle produces this next package;
Wherein processed with this frequency higher than this data/address bus frequency range speed from these data of this package generator transmission by this package gap generator.
11. 1 kinds of network equipments, be used for exporting data to bus in each cycle with a data bus bandwidth, this network equipment comprises:
Package generator, produces idle data after terminating at the package of a package, and starts at the package that different cycle produces next package; And
Package gap generator, be coupled to this package generator, for receiving the data from the transmission of this package generator, the data that dynamic write receives are to buffer, and terminate according to this package and this idle data that this package generator produces, insert gap to this package comprising this idle data and to terminate and between this package starts.
12. network equipments according to claim 11, is characterized in that, this one-period is the period 1 and this different cycle is second round after this period 1; Produce this idle data after this package generator this package be set in this period 1 terminates, and this second round start produce this package and start.
13. network equipments according to claim 11, is characterized in that, this one-period is the period 1 and this different cycle is period 3 after second round after this period 1; And this package generator this package be set in this period 1 terminate after and produce this idle data this second round, and this period 3 start produce this package and start.
14. network equipments according to claim 11, is characterized in that, this package generator is set to produce comparison in each cycle should the more data of data of data/address bus frequency range.
15. network equipments according to claim 14, is characterized in that, the data produced in each cycle correspond to the size of data line, and the line number amount that the size of this data line equals this data/address bus frequency range adds a data line.
16. network equipments according to claim 11, it is characterized in that, this package gap generator is set to this idle data terminated according to this package and this package generator produces, determine the quantity of the idle bytes of the idle data in this gap, and according to the quantity of this idle bytes, select this package to terminate and this idle data of a part after this package terminates forms this gap between two continuous print packages, and export this package terminate and this part idle data to this buffer.
17. network equipments according to claim 16, is characterized in that, this package gap generator is used for:
Terminate according to this package, the initial number of computation-free byte;
By comparing the par of this initial idle byte quantity and idle bytes, calculate defect idle count;
After the package of a previous package terminates, by increasing this defect idle count to defect idle count, to add up this defect idle count for idle bytes;
According to the defect idle count that this is cumulative, a look-up table in the look-up table that optionally reference two is different decides the quantity of the idle bytes in this gap between two packages;
First look-up table wherein in these two look-up tables is relevant to the situation that the quantity of idle bytes is less than this par, and a second look-up table in these two look-up tables is relevant to the situation that the quantity of idle bytes is not less than this par.
18. network equipments according to claim 17, it is characterized in that, when this defect idle count is less than or equal to a number of thresholds, this package gap generator terminates by reference to the package of this first look-up table and this package the quantity determining this idle bytes, wherein this defect idle count is increased, and the quantity of idle bytes in this gap between these two the continuous print packages determined is not more than this par; And
When this defect idle count is greater than this number of thresholds, this package gap generator terminates to determine by reference to the package of this second look-up table and this package and compensates the quantity of this idle bytes, wherein this defect idle count is reduced, and determines that the quantity of the idle bytes in this gap between these two continuous print packages is greater than this par.
19. network equipments according to claim 18, is characterized in that, this number of thresholds is the quantity of the byte of a data line.
20. network equipments according to claim 11, it is characterized in that, this package generator produces data with a frequency higher than this data/address bus frequency range speed, within this cycle, after this package terminates, produce this idle data, and start at this package that this different cycle produces this next package;
Wherein processed with this frequency higher than this data/address bus frequency range speed from these data of this package generator transmission by this package gap generator.
21. network equipments according to claim 20, is characterized in that, comprise further:
Fifo circuit, be coupled between this package gap generator and this bus, be used for reading with the frequency of the speed higher than this data/address bus frequency range the data transmitted from this package gap generator, and be used for the rate output data of this data/address bus frequency range to this bus.
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| US201361845368P | 2013-07-11 | 2013-07-11 | |
| US61/845,368 | 2013-07-11 | ||
| US14/258,021 | 2014-04-22 | ||
| US14/258,021 US9628396B2 (en) | 2013-07-11 | 2014-04-22 | Network device and method for outputting data to bus with data bus width at each cycle by generating end of packet and start of packet at different cycles |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040071166A1 (en) * | 2002-10-15 | 2004-04-15 | Broadcom Corporation | Programmable inter-packet gap generator with byte granularity |
| CN101001332A (en) * | 2006-01-13 | 2007-07-18 | 联发科技股份有限公司 | Flexible diversity combine receiver architecture for digital television and associated method thereof |
| US20090279559A1 (en) * | 2004-03-26 | 2009-11-12 | Foundry Networks, Inc., A Delaware Corporation | Method and apparatus for aggregating input data streams |
-
2014
- 2014-07-07 CN CN201410320279.1A patent/CN104283818B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040071166A1 (en) * | 2002-10-15 | 2004-04-15 | Broadcom Corporation | Programmable inter-packet gap generator with byte granularity |
| US20090279559A1 (en) * | 2004-03-26 | 2009-11-12 | Foundry Networks, Inc., A Delaware Corporation | Method and apparatus for aggregating input data streams |
| CN101001332A (en) * | 2006-01-13 | 2007-07-18 | 联发科技股份有限公司 | Flexible diversity combine receiver architecture for digital television and associated method thereof |
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