WO1998004068A1 - Procede de transmission de donnees numeriques et appareil correspondant - Google Patents
Procede de transmission de donnees numeriques et appareil correspondant Download PDFInfo
- Publication number
- WO1998004068A1 WO1998004068A1 PCT/JP1997/002511 JP9702511W WO9804068A1 WO 1998004068 A1 WO1998004068 A1 WO 1998004068A1 JP 9702511 W JP9702511 W JP 9702511W WO 9804068 A1 WO9804068 A1 WO 9804068A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- bit
- code
- bit code
- conversion processing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40052—High-speed IEEE 1394 serial bus
- H04L12/40078—Bus configuration
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40052—High-speed IEEE 1394 serial bus
- H04L12/40058—Isochronous transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40052—High-speed IEEE 1394 serial bus
- H04L12/40084—Bus arbitration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes
Definitions
- the present invention relates to a transmission device for transmitting digital data and a method thereof.
- IEEE 1394 standard High performance serial bus standard
- a cable 200 having a structure shielded by 204 is specified.
- two types of methods can be used: a digi- tine and a node branch.
- a digi- tine In the daisy-chain system, up to 16 nodes (equipment with 1394 ports) can be connected, and the longest distance between the nodes is 4.5 m.
- the longest distance between the nodes As shown in Fig. 3, by using node branching together, it is possible to connect up to the standard maximum of 63 nodes (physical node 'addresses).
- the IEEE 1394 standard it is possible to connect and disconnect a cable with the above structure while the device is operating, that is, while the power is on, and when a node is added or deleted.
- the 1394 network is automatically reconfigured.
- the device of the connected node can be automatically recognized, and the ID and arrangement of the connected device are managed on the interface.
- FIG. 4 shows the components and protocol architecture of the interface that conforms to the IEEE1394 standard.
- the 394 interface is divided into hardware and firmware.
- the hardware consists of a physical layer (physical layer: PHY) and a link-layer (link layer).
- the physical layer directly drives signals of the IEEE1394 standard.
- the link 'layer has an interface between the host' interface and the physical 'layer.
- the firmware consists of a transaction layer consisting of a management driver that performs actual operations on the interface that conforms to the IEEE 1394 standard, and an IEEE 1394 called SBM (Serial Bus Management). It consists of a management layer consisting of drivers for network management conforming to the four standards.
- the application layer consists of the software used by the user and the management software that interfaces the transaction layer and the management layer.
- a transfer operation performed in a network is called a subaction, and the following two types of subactions are defined.
- an asynchronous transfer mode called “asynchronous”
- a synchronous transfer mode that guarantees a transfer band called “isochronous” are defined as two sub-actions.
- Each subaction is further divided into the following three parts, and takes a transfer state called "arbitration”, "packet 'transmission”, and "acknowledgement”.
- asynchronous transfer is performed.
- FIG. 5 which shows a temporal transition state in this transfer mode
- the first subaction gap shows the idle state of the bus.
- the node determines that it can use the bus and performs arbitration to gain control of the bus.
- the decision to actually stop the bus is made by the node B located at the root as shown in FIGS. 6 (a) and (b).
- the node that has obtained the bus control right by this arbitration then executes the overnight transfer, that is, the packet transmission.
- the node receiving the data returns an acknowledgment to the transferred data by returning an acknowledgment (acknowledgement return code) according to the received result.
- acknowledgement return code an acknowledgment to the transferred data by returning an acknowledgment (acknowledgement return code) according to the received result.
- the state returns to the sub-action gap, that is, the bus idle state, and the above-described transfer operation is repeated.
- the transfer in the asynchronous subaction basically, the transfer having the same structure as the asynchronous transfer is performed, but as shown in Fig. 7, the transfer is performed with higher priority than the asynchronous transfer in the asynchronous subaction. .
- the isochronous transfer in the isochronous sub-action is executed at approximately 8 kHz in priority to the asynchronous transfer in the asynchronous sub-action, thereby providing a transfer mode in which the transfer band is guaranteed. As a result, real-time data transfer is realized.
- a channel ID for discriminating the content is set in the transfer data and the necessary real-time data is transmitted. Day Receive only evenings.
- the physical layer in the IEEE 1394 standard is For example, as shown in FIG. 8, a physical layer logical block (PHY LOGIC) 102, a selector block (RXCLOCK / DATA SELECTOR) 103, each port logical block (PORT L0GIC1.PORT LOG IC2, PORT L0GIC3) 104, 105, 106, each cable port (CABLE P0RT1, CABLE P0RT2, CABLE PORT 3) 1 07, 1 108, 1 109 and a clock generation circuit (PL 110).
- PHY LOGIC physical layer logical block
- RXCLOCK / DATA SELECTOR each port logical block
- PORT L0GIC1.PORT LOG IC2, PORT L0GIC3 104, 105, 106, each cable port (CABLE P0RT1, CABLE P0RT2, CABLE PORT 3) 1 07, 1 108, 1 109 and a clock generation circuit (PL 110).
- the physical layer logical block 102 performs I / O control and arbitration control with the link layer in the IEEE 1394 standard, so that it is connected to the link layer controller 100. Both are connected to the selector block 103 and each port logic block 104, 105, 106.
- the selector block 103 receives the data (DATA1, DATA1) received via the logical blocks 104, 105, 106 connected to the respective cable port ports 107, 108, 109. DATA2, DATA3) and their receiving clocks (RXCLK1, RXCLK2, RXCLK3). They are connected to the physical layer logical block 102 and each of the port logical blocks 104, 105, 106. ing.
- the selector block 103 transmits the bucket data (DATA) sent from the physical layer logical block 102 to all port logical blocks 104, 105, and 100 in the case of data transmission. Send to 6.
- the packet data (DATA1, DATA2, DATA3) received via each port logical block 104, 105, 106 and its received clock (RX CLK1, RXCLK2, RXCLK3) A pair is selected, and the bucket data received via cable ports 107, 108, 109 and the received clock are sent to the physical layer logical block 102.
- a port logic block 1 If the packet data (DATA1) received via the port 104 and the reception clock (RXCLK1) thereof are selected, the packet data (DATA1) received by the port logical block 104 via the cable port 107 is selected. ) And its received clock (RXCLK1) to the physical layer logical block 102. Then, the bucket data selected by the selection block 103 is written to the FIF 0 memory in the physical layer logical block 102 by the received clock. The packet data written in this FIFO memory is read by the system clock (SYSCLK) given by the clock generation program 110.
- SYSCLK system clock
- the port logic circuit 104 transmits and receives an arbitration signal (ARB. SIGNAL) and data (DATA1) via the cable port 107, and the cable port 1 It has the function of generating a receive clock (RXCLK1) from the data signal sent via the 07 and its strobe signal.
- the port logical block 104 receives an arbitration signal (ARB. SIGNAL) from the physical layer logical block 102 at the time of arbitration.
- the port logical block 1. 4 transmits the packet data (DATA 1) transmitted from the physical layer logical circuit 102 via the selector block 103 to the clock generating program 110. Is converted to serial data by the transmission clock (TXCLK) given by, and transmitted from the cable port 107.
- TXCLK transmission clock
- the port logic block 104 converts the bucket data (DATA1) received via the cable port 107 together with its reception clock (RXCLK1) to the selector block 104. Through to the physical layer logical block 102. And this port logical block When the clock 104 is selected by the selector block 103, the packet data (DATA1) is written to the FIFO memory in the physical layer logical block 102 by the received clock (RXCLK1).
- the port logical block 105 transmits and receives the error signal (ARB. SIGNAL) and data (DATA2) via the cable port 108, and transmits and receives the data signal (DATA2) via the cable port 108. It has a function to generate a reception clock (RXCLK2) from the transmitted overnight signal and its strobe signal.
- the port logical block 105 is transmitted from the physical layer logical block 102 at the time of arbitration.
- the port logical block 1. 5 transmits the packet data (DATA 2) transmitted from the physical layer logical circuit 102 via the selector block 103 to the clock generating circuit 1.
- the data is converted to serial data by the transmission clock (TXCLK) given by 10 and transmitted from the cable port 108.
- the port logical block 105 transmits the packet data (DATA2) received via the cable port 108 together with its reception clock (RXCLK2) via the selector block 103. To the physical layer logical block 102. When the port logical block 105 is selected by the selector block 103, the packet data (DATA2) is transferred to the FIFO memory in the physical layer logical block 102 by the received clock RX CLK2. Written.
- the port logical block 106 transmits and receives an arbitration signal (ARB. SIGNAL) and data (DATA3) via the cable port 109, and is transmitted via the cable port 109. Signal And a function to generate the reception clock (RXCLK3) from the strobe signal.
- the port logical block 106 receives an arbitration signal (ARB.SIGNAL) from the physical layer logical block 102 at the time of arbitration.
- the port logical block 106 transmits the packet data (DATA3) transmitted from the physical layer logical block 102 via the selector block 103 to the clock generation routine 110. Is converted to serial data by the transmission clock (TXCLK) given by and transmitted from the cable port 109.
- TXCLK transmission clock
- the port logic block 106 transmits the packet data (DATA3) received via the cable port 109 together with the reception clock (HXCLK3) via the selector block 103. To the physical layer logical block 102.
- the packet data (DATA1) is generated in the physical layer logic block 102 by the received clock (RXCLK1). Is written to the FIFO memory.
- the cable port 107 drives the twisted pair cable with the signal sent from the port logic block 104, and converts the level of the signal sent via the twisted pair cable to port logic. Send to block 104.
- the cable port 108 drives the twisted pair cable with the signal sent from the port logic block 105 and converts the level of the signal sent via the twisted pair cable to the port logic block. Send to Rock 1 105.
- Cable port 109 is sent from port logic block 106.
- the twisted pair cable is driven by the received signal, and the level of the signal sent via the twisted pair cable is converted and sent to the port logic block 106.
- the clock generation block 110 is configured from the clock of 24.576 MHz given by the crystal oscillator 111 to the system clock (SYSCLK) of 49.152 MHz and 98.304 MHz.
- SYSCLK system clock
- TXCLK transmission clock
- the logical values of the arbitration signal in the physical layer are three values of "1", “0", and “Z”, and are generated according to the rules shown in the following 1 and Table 2, and shown in Table 3. Decoded by rules.
- the value "Z" indicates the inoperative state of the driver.
- one twisted pair wire T PAZT PA * transmits the strobe signal (Strb_Tx) and receives the data signal (Datajix).
- the second twisted pair line TPB / TPB * transmits a data signal (Data-Tx) and receives a strobe signal (Strb_Rx).
- the Strb_Tx signal, Data_Tx signal, Strb_Enable signal and Data_Enable signal are used to generate arbitration signals (Arb-A_Rx, Arb_B-Rx).
- each node determines whether it is a leaf. Each node is a leaf The determination of whether or not it is made is made by recognizing how many cables are connected to itself. In other words, a node that has only one port or has multiple ports but only one cable connected is a leaf. Each leaf makes an inquiry to the connected node (parent node). The inquired node has the inquiring node connected to the inquired port as a child, and makes inquiries to the connection destination from a port whose parent-child relationship has not been determined. In this way, a parent-child relationship in the network is determined. Finally, the root node is the parent node of any port.
- the physical layer decodes the interpolation calibration signals (Arb_A, Arb_B) to the line state based on the rules shown in Table 5 below.
- Table 5 Arbitration-Related IH Stars Used in the Physical Calendar
- RX—PARENT—NOTIFY The PHY of the connected W node is about to become a child node.
- the PHY of the RX-REQUEST child node is requesting a path.
- the PHY is trying to be a child of both.
- RX_GRANT Parent node PHY is giving path control.
- RX—DATA-END The PHY of the connection node that is connected is transmitting data locks to release the noise.
- the above-mentioned IEEE 1394 standard provides the necessary conditions as an interface for connecting consumer devices that handle video to a convenience store, such as audio devices, visual devices, and personal convenience devices in ordinary households. It is possible to easily connect various devices with a single cable to build a home network, which makes it easy to operate various devices.
- the inter-node cable length is specified to be 4.5 m at the maximum in the IEEE1394 standard, even in a home, for example, a network extending over a plurality of rooms. In order to build a talk, there must be a large number of nodes needed only for cable transit.
- the cable length is to be increased without changing the physical layer method in the IEEE1394 standard, the cable must be made thicker, and workability such as cable routing for a network is required. Not only does the cost drop, but the cable itself becomes expensive.
- An object of the present invention is to provide a digital serial data bus in which arbitration of a bus use right is performed prior to data transfer in view of the conventional situation as described above. It is an object of the present invention to provide a digital serial data interface device which enables long-distance transmission by extending a cable length between nodes in a wireless interface.
- the present invention relates to a data transmission / reception device for transmitting and receiving data and a control code, and includes an input / output port, and converts transmitted data from an n-bit code to an m-bit code and outputs the converted data to the input / output port.
- Data conversion processing means for converting the data received from the pre-filled output port from an m-bit code to an n-bit code; and for obtaining a right to use a transmission line connected to the input / output port. Is converted to a control code consisting of m-bit codes other than the m-bit code assigned to the data, output to the I / O port, and received from the I / O port. Control signal conversion processing means for converting the m-bit control code into a control signal.
- the present invention also relates to a data transmission method for transmitting and receiving data and a control code, wherein the transmission data is converted from an n-bit code to an m-bit code and output to an input / output port.
- a conversion processing step a reception data conversion processing step of converting data received from the input / output port from an m-bit code to an n-bit code, and a right to use a transmission path connected to the input / output port.
- a reception control signal conversion step of converting a bit control code into a control signal.
- FIG. 1 shows the signal structure of transfer data in the IEEE 1394 standard. It is a time chart shown.
- FIG. 2 is a cross-sectional view of a cable specified in the IEEE1394 standard.
- FIG. 3 is a diagram showing a configuration example of a network adopting the IEEE 1394 standard.
- FIG. 4 is a diagram showing the components and protocol architecture of an interface according to the IEEE1394 standard.
- FIG. 5 is a diagram showing a packet of the sink-mouth eggplant transfer.
- FIG. 6 is a diagram showing a state in which the right to use the bus is acquired by arbitration.
- FIG. 7 is a diagram showing a packet in the iso-mouth eggplant transfer.
- FIG. 8 is a block diagram illustrating an actual configuration example of a physical layer in the IEEE 1394 standard.
- FIG. 9 is a block diagram showing an embodiment of a digital serial interface device according to the present invention.
- FIG. 10 is a block diagram showing another embodiment of the digital serial data interface device according to the present invention.
- FIG. 11 is a block diagram showing still another embodiment of the digital serial data interface device according to the present invention.
- the digital serial data interface device is configured, for example, as shown in FIG.
- the interface device shown in FIG. 9 includes a physical layer logical block (PHY LOGIC) 1, a selector block (RXCLOCK / DATA SELECTOR) 2, a conversion processing block (4B / 5B CONNVERTER & ARB.
- PHY LOGIC physical layer logical block
- RXCLOCK / DATA SELECTOR selector block
- conversion processing block (4B / 5B CONNVERTER & ARB.
- SIGNAL CONNVERTE 3 and a scramble block ( SCRAMBLE1, SCRAMBLE2) 4 A, 4 mm, each descramble block (DE-SCRAMBLER DE-SCMMBLE2) 5 A, 5 mm, each transmission block (P / S1, P / S2) 6 A, 6 B, each reception block ( RX-PLL1 P / S, RX-PLL2 P / S) 7 A, 7 B, port logic block (PORT LO GIC) 8, analog 'dryno ANALOG DRIVER) 9 and clock generation block (PLL) 10 Become.
- the physical layer logical program 1 is used to control I / O with a link layer in the IEEE 1394 high performance serial bus standard (hereinafter referred to as the IEEE 1394 standard) and to monitor the I / O.
- a link layer that conforms to the IEEE 1394 standard. It is connected to the controller 100 and has the above-mentioned selector block 2, conversion processing block 3, and port logic block 8. It is connected to the.
- the I / O with the link layer in the physical layer logical block 1 is equivalent to the IEEE1394 standard, and the communication between the link layer and the physical layer is a data signal (DATA).
- the link request signal (LREQ) is input to the physical layer logical block 1 as a transmission request from the link layer to the physical layer.
- This physical layer logical block 1 is a bit-rate controller.
- the arbitration controller controls transmission and reception between the arbitration process and the bus.
- the physical logical block 1 starts arbitration after an appropriate gap time. Note that the above-mentioned gap time differs depending on the type of arbitration.
- the physical layer logical block 1 sends packet data (D ATA) from the link layer to the selector block 2 and converts an arbitration request from the link layer into a conversion processing block 3 and a port logical block 8. Send to
- the selector block 2 includes the data (MTA1, DATA2) received via the conversion processing block 3 and the received clocks (RXCLK1, RXCLK2), the data received via the port logic circuit 8 (DATA3), and It selects one set of the received clocks (RXCLK3), and is connected to the physical layer logical block 1, the conversion processing block 3, each of the receiving blocks 7A and 7B, and the port logic block 8.
- the selector block 2 When transmitting data, the selector block 2 sends the bucket data (DATA) sent from the physical layer logical block 1 to the conversion processing block 3 and the port logical block 8. As a result, transmission data is transmitted to all transmission ports. In the case of reception, one set of the packet data (DATA1, DATA2, DATA3) received via the conversion processing block 3 or the port logic block 8 and its reception clock (RXCLK1, RXCLK2, RXCLK3) is selected. Then, for example, the selected packet data (DATA1) and its reception packet (RXCLK1) are sent to the physical layer logical block 1. The packet data selected by the selector block 2, for example, the packet data (DATA 1) received by the conversion processing block 3, Lock (RXCLK1) is written to FIF 0 memory in physical layer logical block 1. The bucket data written in the FIFO memory is read out by the system clock SYSCLK provided by the clock generation block 10.
- the conversion processing block 3 functions as a 4-bit / 5-bit conversion processing means for data, and a 5-bit symbol other than the 5-bit symbol allocated in the evening in the 4-bit / 5-bit conversion processing. Functioning as an arbitration signal conversion processing means for allocating the arbitration signal to the arbitration signal.
- the arbitration signal (A RB.SIGNAL1) sent from the physical layer logical block 1 is transmitted.
- ARB.SIGNAL2) is converted to one or two 5-bit symbols assigned as shown in Table 6, and sent to each scramble block 4A, 4B.
- Table 6 that is, at the time of transmission, as shown in Table 6, one symbol is assigned to each arbitration except for TX_DATA_PREFIX and BUSJIESET, two symbols (11000 10001) are assigned to TX-DATA_PREFIX, and two symbols (00000 11111) is assigned and transmitted.
- Table 6 in this embodiment corresponds to Table 4 in the IEEE 1394 standard.
- the conversion processing block 3 converts the 5-bit arbitration symbols sent from the descrambling blocks 5A and 5B into signals corresponding to the arbitration state based on the table shown in Table 7. Convert and send to physical layer logical block 1. This conversion is performed based on the received 5-bit received symbol and the 5-bit transmitted symbol transmitted from this port. As shown in Table 5, the arbitration specified in the IEEE 1394 standard is Some depend on the transmission status of the child and parent arbitration signals.
- the erbitration state is determined, and a corresponding arbitration signal is output to the physical layer logical program 1.
- the arbitration signal transmitted to the physical layer logical block 1 is a 2-bit signal to represent "1", "0", and "Z” in accordance with the IEEE1394 standard.
- the corresponding arbitration state is determined from the allocation, the transmitted symbol and the received symbol, and an arbitration signal is generated based on Table 8 and sent to the physical layer block 1.
- the state of the node is managed based on the symbol transmitted in the state machine (not shown), so that the arbitration state is determined based on the state of the received symbol and the state of the node. Is also possible. Note that Table 7 in this embodiment corresponds to Table 5 in the IEEE 1394 standard. Useful symbols assigned to arbitration
- the conversion processing block 3 converts the packet data (DATA1, DAT A2) transmitted via the selector block 2 from the 4-bit signal to the data as shown in Table 9.
- the signal is converted to the 5-bit signal assigned to the scramble block 4A and 4B.
- the 5-bit received bucket data sent from each of the descrambling blocks 5A and 5B is converted from a 5-bit signal to a 4-bit signal and sent to the selector block 2.
- Table 9 Symbols to be assigned for one night
- Each of the scramble blocks 4A and 4B performs 5-bit transmission by performing a scramble process using a shift register on the 5-bit transmission signal-transmitted from the conversion processing block 3 when transmitting packet data. Reduce unnecessary radiation of signals.
- symbols other than IDLE (11111), TX_DATA_PREFIX (11000 10001) and TX-DATA_END (01101) all have 2-bit ⁇ 0 '' at the beginning, so when synchronizing symbols after serial / parallel conversion, If two bits of "0" are found, that bit is assumed to be the head of a symbol, and each arbitration signal can be determined using five bits including the bit as one symbol. However, BUS_RESET (00000 11111) is determined when consecutive 5 bits of “0” are received without considering 2-bit “0”.
- the two symbols (00000 11111) are assigned to BUS_RESET to lock the PLL and further maintain the lock.
- a code that does not bias the DC balance and locks the PLL when converted to an NRZI code is selected.
- a code that satisfies these conditions can be obtained by combining two symbols.
- TX_DATA_PREFIX (11000 10001) is detected independently of other arbitration signals. In other words, the received data is shifted one bit at a time to prepare five data strings (length 10 bits), and if they match with the TX-DATA_PREFIX bit pattern (11000 10001), TX_DATA_PREF Determines IX reception. Since the packet data is received immediately after TX—DATA—PREF IX, symbol synchronization of the packet data can be achieved by receiving TX_DATA_PREF IX.
- TX_DATA_END (01101) is continuously received immediately after the packet data, it can be detected by the same symbol synchronization as TX-DATA_PREFIX and bucket data. 7 _0 7 —?
- the bit pattern of & £? (11000 10001) is a pattern that does not appear in the data sequence of the bucket data converted according to Table 9, so that even if symbol synchronization is not achieved, the packet is not synchronized. It is not detected in the middle of the night, and incorrect data reception does not occur.
- no other arbitration signals other than TXJATA_END and BUS-RESET are detected.
- Each of the descrambling blocks 5A and 5B receives a descramble process corresponding to the scramble process by the above scramble blocks 4A and 4B, and receives a 5-bit signal from the reception blocks 7A and 7B. De-scrambles the 5-bit received signal by applying it to the received signal.
- the conversion processing block 3 receives the 5-bit received signal descrambled by the descrambling programs 5A and 5B.
- the scramble blocks 4A, 4B and the descramble blocks 5A, 5B can be set to switch on and off of each operation.
- Each of the transmission blocks 6A and 6B converts the 5-bit transmission signal scrambled by each of the scramble blocks 4A and 4B from parallel data to serial data, and further converts the NRZ (Non Return from Zero to Zero) to NRZI (Non Return to Zero Inverse).
- each of the receiving programs 7A and 7B converts the received signal from NRZI data to NRZ data, converts the serial data from NRZI data to parallel data, and descrambles the 5-bit received signal. Send to block 5 A, 5 B.
- the receiving blocks 7A and 7B generate reception clocks (RXCLK1 and RXCLK2) by PLL from the received data and send them to the selector block 2.
- the port logic circuit 8 transmits and receives an arbitration signal ARB.SIGNAL3 and data (DATA3) conforming to the physical layer of the IEEE1394 standard, and transmits the data via the analog driver 9.
- the receive clock (RXCLK3) is generated from the received data and its strobe signal.
- an arbitration signal (ARB.SIGNAL3) is sent from the physical layer logic block 1 at the time of erbitration.
- this port logical block 8 The bucket data (DATA3) sent from the logical layer block 1 via the selector block 2 is converted to serial data by the transmission clock (TXCLK) given by the clock generation program 10 and the analog driver 9 is turned on. To send through.
- TXCLK transmission clock
- the port logic block 8 transmits the packed data (DATA3) received via the analog driver 9 together with the reception clock (RXCLK3) via the selection block 3 to the physical layer logic block. Send to Lock 1.
- the packet data (DATA3) is written to the FIF0 memory in the physical layer logical block 1 by the received clock (RXCLK3).
- the clock generation block 10 is provided with a system clock (SYSCLK) of 49.15.2 MHz and a transmission clock (TXCLK) of 9.8.404 MHz from the clock of 25.776 MHz provided by the crystal oscillator 11. ) Is generated.
- SYSCLK system clock
- TXCLK transmission clock
- the digital serial data interface device having such a configuration, 4-bit / 5-bit data for the arbitration signal (ARB.SIGNAL1, ARB.SIGNAL2) and the packet data (DATA1, DATA2) are output.
- the arbitration signal ARB.SIGNAL1, ARB.SIGNAL2
- the packet data DATA1, MTA2
- the arbitration signal ARB.SIGNAL1, ARB.SIGNAL2
- the packet data DATA1, MTA2
- this interface device also supports IEEE 13 Equipped with a port logic block 8 and an analog driver 9 compliant with the physical ⁇ ⁇ layer of the 94 standard, a transmission path using a cable compliant with the IEEE 1394 standard and a transmission path using an optical fiber cable or a UTP cable are provided. Can coexist.
- the transmission / reception block 6 composed of the transmission block 6A and the reception block 7A in the interface device shown in FIG.
- an optical fiber cable can be connected via the optical connection module 20A.
- the optical connection module 20B to the transmission / reception program 67B including the transmission block 6B and the reception block 7B, the optical fiber is connected via the optical connection module 20B.
- One pull can be connected.
- the optical connection modules 20A and 20B convert the NRZI electric signal from the transmission / reception blocks 67A and 67B into an optical signal and transmit it to the optical fiber cable at the time of data transmission.
- the optical signal transmitted via the optical fiber cable is converted into an NRZI electric signal and transmitted to the transmission / reception blocks 67A and 67B.
- the interface device in the embodiment shown in FIG. 10 is different from the interface device shown in FIG. 9 in that the port logic block 8 and the analog driver 9 are omitted.
- the configuration is exclusively for connection using an optical fiber cable.
- the selector block (RXCLOCK / DATA SELECT OR) 2 and the conversion processing block (4B / 5B CONNVERTER & ARB. SIGNAL CO NNVERTER) 3 in the interface device shown in FIG. I have.
- Light fa When a transmission cable is used as a transmission line, unnecessary radiation does not occur. Therefore, the above scramble block (SCRAMBLE1, SCRAMBLE2) 4A, 4 ⁇ and descramble block (DE-SCRAMBLE1, DE-SCRAMBLE2) 5A ,
- the optical connection modules 20 ⁇ and 20 ⁇ in the interface device shown in FIG. 10 described above are connected to the UT ⁇ connection modules 30A and 30 30.
- B you can connect a UTP cable. That is, by connecting the cable transceiver 20A to the transmission / reception process 67A and connecting the RJ45 connector 33A to the cable transceiver 31A via the pulse transformer 32A, the RJ45 connector 33A is connected to the cable transceiver 31A. To connect a UTP cable.
- the cable transceivers 31A and 31B for example, ML6671 manufactured by Microphone Linear Corporation is used.
- the cable transceivers 31A and 3IB convert the NRZI signal from the transmission / reception proc- esses 67A and 67B into an MLT-3 signal and send it to the pulse transformers 32A and 32B. Also, at the time of data reception, the MLT-3 signal transmitted through the pulse transformers 32A and 32B is converted into an NRZI signal, and the transmission / reception block 67A,
- the pulse transformers 32 A and 32 B are It is also for disconnecting the transceiver and the cable in a DC manner.
- the interface device in the embodiment shown in FIG. 11 is exclusively used for connecting a UTP cable.
- the selector block (RXCLOCK / DATA SELE CT0R) 2 the conversion processing block (4B / 5B CONNVERTER & ARB. SIGNAL CO NNVERTER) 3, and the scramble blocks (SCRAMBLE1, SCRAMBLE2) in the interface device shown in FIG. ) 4 A, 4 B, each descrambling block (DE-SCRAMBLED DE-SCRAMBLE 2) 5 A, 5 B is one signal processing block 25.
- a long-distance transmission of digital serial data can be performed by connecting an optical fiber cable or a UTP cable by exchanging connection modules. Since the scramble blocks 4A and 4B and the descramble blocks 5A and 5B can be set to switch on and off the respective operations, when the UTP cable is connected, the scramble blocks 4A and 4B are used. By turning on 4B and the descrambling blocks 5A and 5B, unnecessary radiation can be prevented.
- a second embodiment will be described.
- one or two symbols are assigned to each arbitration signal as shown in Table 6, but for example, as shown in Table 10, each symbol except IDLE (lllll) is assigned.
- IDLE lllll
- two symbols (11000 10001) can be added as a string delimiter for synchronizing symbols for serial / parallel conversion on the receiving side.
- the received symbol and the transmitted symbol are combined using 10 bits.
- a 4-bit / 5-bit conversion process for performing 4-bit / 5-bit conversion processing on data is performed.
- the operation of the 4-bit / 5-bit conversion processing means, the arbitration signal conversion processing means, and the operation of the port logic constituting the physical layer conforming to the IEEE 1394 high performance serial bus standard By selecting the data transmission and reception via the input / output port by switching with the selection means, the transmission path using a cable conforming to the IEEE1394 standard and the transmission path using an optical fiber cable or UTP cable The transfer with is possible.
- the idle state in the IEEE 1394 standard aviation scheme includes IDLE (llll), that is, “111” that contains the most clock information.
- IDLE llll
- the arbitration can be performed reliably even if the idle state of the arbitration is maintained while maintaining the lock state of the PLL on the receiving side.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Information Transfer Systems (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97930848A EP0868048A4 (en) | 1996-07-19 | 1997-07-18 | DEVICE AND METHOD FOR DIGITAL DATA TRANSFER |
KR1019980702142A KR20000064268A (ko) | 1996-07-19 | 1997-07-18 | 디지털 데이터 전송장치 및 전송방법 |
US09/043,485 US6430225B1 (en) | 1996-07-19 | 1997-07-18 | Apparatus and method for digital data transmission |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8/209185 | 1996-07-19 | ||
JP20918596 | 1996-07-19 | ||
JP9/94221 | 1997-04-11 | ||
JP9422197 | 1997-04-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998004068A1 true WO1998004068A1 (fr) | 1998-01-29 |
Family
ID=26435495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/002511 WO1998004068A1 (fr) | 1996-07-19 | 1997-07-18 | Procede de transmission de donnees numeriques et appareil correspondant |
Country Status (6)
Country | Link |
---|---|
US (1) | US6430225B1 (ja) |
EP (1) | EP0868048A4 (ja) |
KR (1) | KR20000064268A (ja) |
CN (1) | CN1199525A (ja) |
CA (1) | CA2232624A1 (ja) |
WO (1) | WO1998004068A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6378000B1 (en) | 1999-04-29 | 2002-04-23 | Mitsubish Electric Research Laboratories, Inc | Address mapping in home entertainment network |
US6496862B1 (en) | 1998-08-25 | 2002-12-17 | Mitsubishi Electric Research Laboratories, Inc. | Remote monitoring and control of devices connected to an IEEE 1394 bus via a gateway device |
US6505255B1 (en) | 1999-04-29 | 2003-01-07 | Mitsubishi Electric Information Technology Center America, Inc. (Ita) | Method for formatting and routing data between an external network and an internal network |
US6523064B1 (en) | 1999-04-29 | 2003-02-18 | Mitsubishi Electric Research Laboratories, Inc | Network gateway for collecting geographic data information |
US6633547B1 (en) | 1999-04-29 | 2003-10-14 | Mitsubishi Electric Research Laboratories, Inc. | Command and control transfer |
KR100867561B1 (ko) * | 2000-03-07 | 2008-11-10 | 소니 인터내셔널(유로파) 게엠베하 | 긴 지연 접속들을 위한 인터페이스 링크 층 디바이스 |
JP2013005153A (ja) * | 2011-06-15 | 2013-01-07 | Denso Corp | 符号化装置及び符号化方法 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6175884B1 (en) * | 1998-11-03 | 2001-01-16 | Intel Corporation | Efficient communication of transaction types using separate and orthogonal attribute fields in packet headers transferred between hubs in a computer system |
JP3289706B2 (ja) | 1999-06-23 | 2002-06-10 | 日本電気株式会社 | 送受信回路及び送受信方法並びに記録媒体 |
JP2001292146A (ja) * | 2000-04-07 | 2001-10-19 | Sony Corp | 電子機器およびディジタルシリアルデータのインタフェース装置のバス初期化フェーズにおける処理方法 |
JP2001313646A (ja) * | 2000-04-27 | 2001-11-09 | Sony Corp | 電子機器およびその物理層回路のステート制御方法 |
US7327754B2 (en) * | 2000-09-28 | 2008-02-05 | Teridian Semiconductor, Corp. | Apparatus and method for freezing the states of a receiver during silent line state operation of a network device |
JP4060761B2 (ja) * | 2002-09-06 | 2008-03-12 | シャープ株式会社 | 光伝送装置、及びそれを備える電子機器 |
JP2004240713A (ja) * | 2003-02-06 | 2004-08-26 | Matsushita Electric Ind Co Ltd | データ転送方法及びデータ転送装置 |
DE102004031945A1 (de) * | 2004-06-30 | 2006-03-09 | Deutsche Thomson-Brandt Gmbh | Verfahren zur Bereitstellung einer Tabelle stationsspezifischer Informationen in einem Netzwerk verteilter Stationen sowie Netzwerkstation für die Durchführung des Verfahrens |
US7672393B2 (en) * | 2006-08-02 | 2010-03-02 | Richtek Technology Corporation | Single-wire asynchronous serial interface |
CN102393531A (zh) * | 2011-08-03 | 2012-03-28 | 中国石油天然气集团公司 | 一种用于地震勘探的数据传输系统 |
TW201405315A (zh) * | 2012-07-30 | 2014-02-01 | Acer Inc | 支援雙主控裝置的資料路由系統 |
CN104572563B (zh) * | 2014-12-11 | 2017-12-08 | 深圳市国微电子有限公司 | 基于ieee 1394接口的物理层电路 |
US20170270062A1 (en) | 2016-03-21 | 2017-09-21 | Intel Corporation | In-band retimer register access |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03263946A (ja) * | 1990-03-13 | 1991-11-25 | Nec Corp | デジタル通信の伝送用符号変換方式 |
JPH03297236A (ja) * | 1990-04-16 | 1991-12-27 | Japan Aviation Electron Ind Ltd | データ伝送方式 |
JPH0685847A (ja) * | 1992-09-01 | 1994-03-25 | Matsushita Electric Ind Co Ltd | ハイブリッドlan |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5276128A (en) | 1991-10-22 | 1994-01-04 | The Dow Chemical Company | Salts of polybenzazole monomers and their use |
US5349654A (en) * | 1992-02-20 | 1994-09-20 | The Boeing Company | Fault tolerant data exchange unit |
US5361261A (en) | 1992-11-02 | 1994-11-01 | National Semiconductor Corporation | Frame-based transmission of data |
JP3247571B2 (ja) * | 1994-06-09 | 2002-01-15 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 送信されたデータフレームの連続性を保持する方法、通信ノード内のアダプタ装置及びデータフレーム連続性保持装置 |
US5577069A (en) * | 1994-08-02 | 1996-11-19 | National Semiconductor Corporation | Signalling method and structure suitable for out-of-band information transfer in communication network |
JP3297236B2 (ja) | 1995-02-01 | 2002-07-02 | 三菱重工業株式会社 | 漏油検知センサ |
US5923654A (en) * | 1996-04-25 | 1999-07-13 | Compaq Computer Corp. | Network switch that includes a plurality of shared packet buffers |
US5719862A (en) * | 1996-05-14 | 1998-02-17 | Pericom Semiconductor Corp. | Packet-based dynamic de-skewing for network switch with local or central clock |
JP4076724B2 (ja) * | 1998-02-24 | 2008-04-16 | シーゲイト テクノロジー エルエルシー | ダイナミック半二重によるループ・フェアネスの保持 |
-
1997
- 1997-07-18 US US09/043,485 patent/US6430225B1/en not_active Expired - Fee Related
- 1997-07-18 CA CA002232624A patent/CA2232624A1/en not_active Abandoned
- 1997-07-18 CN CN97191115A patent/CN1199525A/zh active Pending
- 1997-07-18 WO PCT/JP1997/002511 patent/WO1998004068A1/ja not_active Application Discontinuation
- 1997-07-18 EP EP97930848A patent/EP0868048A4/en not_active Withdrawn
- 1997-07-18 KR KR1019980702142A patent/KR20000064268A/ko not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03263946A (ja) * | 1990-03-13 | 1991-11-25 | Nec Corp | デジタル通信の伝送用符号変換方式 |
JPH03297236A (ja) * | 1990-04-16 | 1991-12-27 | Japan Aviation Electron Ind Ltd | データ伝送方式 |
JPH0685847A (ja) * | 1992-09-01 | 1994-03-25 | Matsushita Electric Ind Co Ltd | ハイブリッドlan |
Non-Patent Citations (1)
Title |
---|
See also references of EP0868048A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6496862B1 (en) | 1998-08-25 | 2002-12-17 | Mitsubishi Electric Research Laboratories, Inc. | Remote monitoring and control of devices connected to an IEEE 1394 bus via a gateway device |
US6378000B1 (en) | 1999-04-29 | 2002-04-23 | Mitsubish Electric Research Laboratories, Inc | Address mapping in home entertainment network |
US6505255B1 (en) | 1999-04-29 | 2003-01-07 | Mitsubishi Electric Information Technology Center America, Inc. (Ita) | Method for formatting and routing data between an external network and an internal network |
US6523064B1 (en) | 1999-04-29 | 2003-02-18 | Mitsubishi Electric Research Laboratories, Inc | Network gateway for collecting geographic data information |
US6633547B1 (en) | 1999-04-29 | 2003-10-14 | Mitsubishi Electric Research Laboratories, Inc. | Command and control transfer |
KR100867561B1 (ko) * | 2000-03-07 | 2008-11-10 | 소니 인터내셔널(유로파) 게엠베하 | 긴 지연 접속들을 위한 인터페이스 링크 층 디바이스 |
JP2013005153A (ja) * | 2011-06-15 | 2013-01-07 | Denso Corp | 符号化装置及び符号化方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20000064268A (ko) | 2000-11-06 |
CN1199525A (zh) | 1998-11-18 |
US6430225B1 (en) | 2002-08-06 |
CA2232624A1 (en) | 1998-01-29 |
EP0868048A4 (en) | 2001-12-05 |
EP0868048A1 (en) | 1998-09-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5102784B2 (ja) | イーサネット符号化違反でもって仕切られたフレーム及びパケット構造を用いてイーサネット伝送線上で異なる種類のパケット化ストリーミングデータを転送するシステム及び方法 | |
WO1998004068A1 (fr) | Procede de transmission de donnees numeriques et appareil correspondant | |
EP0834815B1 (en) | Data communication method, electronic apparatus and physical-layer-control integrated circuit | |
JP3487768B2 (ja) | 信号伝送装置 | |
JP2001292146A (ja) | 電子機器およびディジタルシリアルデータのインタフェース装置のバス初期化フェーズにおける処理方法 | |
CN101385294B (zh) | 利用以以太网编码违例区分的帧和分组结构在以太网传输线上传递不同类型的流数据和分组数据的系统和方法 | |
US7606157B2 (en) | Apparatus and method for communicating arbitrarily encoded data over a 1-gigabit ethernet | |
US6909699B2 (en) | Data transfer system, data transfer management apparatus and data transfer method | |
US7177283B2 (en) | Transmitting and receiving circuit and transmitting and receiving method | |
EP0994422A2 (en) | Data interfacing apparatus and data transfer method | |
US6980616B1 (en) | Transmission method and device | |
JP2001119410A (ja) | 自己識別フェーズにおける処理方法 | |
WO1998049808A1 (fr) | Dispositif et procede pour la transmission de donnees numeriques | |
US20020177913A1 (en) | Interface apparatus, communication device including same, and communication method using same | |
PHY | Transceiver Configurations in Arria V GZ Devices |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 97191115.0 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA CN JP KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
ENP | Entry into the national phase |
Ref document number: 2232624 Country of ref document: CA Ref document number: 2232624 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1997930848 Country of ref document: EP Ref document number: 1019980702142 Country of ref document: KR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 09043485 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1997930848 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1019980702142 Country of ref document: KR |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1997930848 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1019980702142 Country of ref document: KR |