TWI227979B - Communication controller and communication method thereof - Google Patents

Abstract

The present invention provides a communication controller and its communication method to prevent the occurrence of a receiving rejection status from the host under communicating during information communication in a packet unit. The communication controller of this invention receives, in the packet unit, information corresponding to a plurality of communication modes different from one another in the information volume included in one packet. This communication controller that temporarily stores the information and then transmits it includes a memory means for temporarily storing the received information and a control means for controlling the number of the packets stored in the memory means corresponding to the communication modes. While in a communication mode wherein the memory means can store a plurality of packets, the control means sets the storing locations of a plurality of packet in the memory means to enable the memory means to temporarily store a plurality of packets.

Description

1227979 V. Description of the invention (1) 1. [Technical field to which the invention belongs] The present invention relates to a communication controller and a communication method, and more particularly to a communication controller and a communication method for performing data communication according to a message envelope. 2. [Previous Technology] In the past, when the computer body and peripheral devices were connected, they were connected using peripheral interfaces such as Serial Interface or Parallel Interface. In addition, a serial interface such as USB (Universal Serial Bus) or IEEE1394 appears on an interface connecting a plurality of various peripheral devices into one, and there is a direction to unify and commonize the interface. In the sfl society at the end of recent years, due to the necessity of communication of large-capacity data, Nansu has developed the USB 2.0 specification, whose data transfer rate is faster than the previous USB 1.0 specification (USB-IF: according to USB Implements Forum specifications) and other USB1 · χ specifications are large. In the previous USbi · x specifications, in the connection mode, there is a Full Speed mode (hereinafter referred to as FS mode) with a maximum data transfer rate of 12Mbps and a Low Speed mode (hereinafter referred to as LS mode) at 1.5Mbps. However, in the USB2 · 0 specification, these modes are still maintained. In addition, the high-speed (High

Speed) mode (hereinafter referred to as the HS mode), which enables high-speed data communication. When using such a USB2.0-compliant functional device, for example, when a 512-byte memory is connected according to the Hs mode, the 512-byte memory can be used as a 1-message message buffer structure. In the case where 512 bytes are connected according to the FS mode, the 64-byte memory can be used as a 1-message buffer structure. Regardless of whether the connection is based on the HS mode or the connection based on the FS mode

1227979

The 5 1 vertical block is treated as a 1-message buffer, but it is used in the FS mode, which is 64 bytes of the maximum message block capacity of bulk transfer, and does not use the remaining 448 bytes. ☆ According to the connection of the FS mode, the buffer of the system composed of functional devices uses 64 bytes, and the remaining 448 bytes are not used, but it is treated as a message envelope buffer of the I12 bit ^ memory. Use the entire 5 1 2 bytes of 1 message buffer to write or read data. Therefore, during the period of writing data to the buffer or reading data from the buffer, there is no need to access the buffer from the other, and make a ^ request to the host computer or a NAK (Negative Acknowledge) response from the host computer ( Negative plastic,). When a NAK response occurs, a retransmission is requested from the host computer connected to the USB. U Λ 息 封 ’A transmission wait is waiting for retransmission from the host computer. Also, in the case where the USB buffer cannot be accessed by others, during the time when an IN request or an OUT request is made to the host computer making the υ β connection, a message loss occurs and a NAK response occurs. 'III. [Content of the invention] The mistakes to be solved in Yu' are in the history of the data that was sent by the master in accordance with the chaos, and because the data of the unit of message storage will not change due to the communication mode, although There is a problem that the data cannot be stored in the state of being in the air, and there is a problem that the host computer refuses to receive data during the communication. ~ In order to solve the above problems, the present invention aims to provide a communication controller and a communication method for communicating data in units of message envelopes.

1227979 V. Description of the invention (3) 4 ′ can be inhibited in the state of 和, 隹 >, and 态. A refusal of acceptance between the host computer and the host computer ^^ The subject of the present invention is approved. The amount of data contained in the cover; the system benefits, received in accordance with the message cover unit and transmitted after the 1 message is stored, with the information corresponding to the two communication modes #, in the temporary 2 5), temporarily storing the received clothes (such as in The buffer control unit of the memory form of this embodiment = Gong Qiao; and the device (for example, the number of messages stored in the device of this embodiment, knowing that the communication mode controlled in the memory according to the communication mode is set in the memory device and can be stored in the memory device). The message covers of multiple Xunyi devices are recorded according to the information received by the message cover units. 々 Acceptance can suppress the rejection of the state of rejection. ^ In addition, the control device can store multiple Qi from # in the memory device so that By changing the communication in the memory device two: a 7 δί1 The storage state of the information seal changes better. Therefore, according to the adjustment of the two-south 5 storage type υ, the storage device is stored according to: = modular storage position 'can be highly efficient Stored data. | Received data The above-mentioned transmission and reception data are transmitted through the universal serial bus. The bus is of USB2.0 specification or above and higher-level specifications .: Use serial, use coffee.〇Specification or Above it Grid of the universal resource under the conditions of October, the communication mode can be controlled in accordance with the message storage unit of sealing material of the message memory save = left foot of the sealing means and the order number change communication.

1227979 Legislation and description of the invention (4) The amount of data contained in the present invention is stored in the memory device. The standby mode specifies the communication mode. The fixed communication mode is in the mode, the control step, and in this case, the memory is sealed. In addition, under the condition, by changing the storage status of the information envelope, the information is stored in accordance with the information cover. The terminal-mounted communication method such as a terminal meter is to receive data corresponding to multiple communication modes different from one message cover according to the message cover unit, and then transmit it after temporarily storing (for example, the memory 25 in this embodiment). Communication mode; and control steps, according to the control of the number of messages stored in the memory device according to the indicated; in the mode refers to the communication of multiple message envelopes that can be stored in the memory device; set the storage location of multiple message envelopes in the memory device; The memory device can store multiple message envelopes in the communication mode. The location of the message envelope is temporarily stored in multiple message methods, and the number of messages in the memory device according to the message envelope is controlled and changed according to the communication mode. ≪ Inhibit rejection. Brother memory device can store multiple communication modes of message cover The storage location of message cover in the memory device can change the status of the message. Therefore, the data received by the storage unit can be efficiently performed according to the communication mode. [Formula] -1 A preferred embodiment of the present invention will be described in detail with reference to the drawings. This description indicates an embodiment of the present invention, and the explanation of the present invention is unclear. An example of a communication controller that implements the form. Figure 丨 is a block diagram of the device controller. Here, the device controller of the communication controller in the array is formed, but the device controller

IHl Page 10 1227979

The end device is connected to the host computer. The central processing unit (CPU) of the host computer and the central processing unit (CPU) of the terminal device communicate with each other through the device controller. In addition, the terminal device and the host computer communicate with each other via a USB cable. However, for example, if the communication is performed in the form of a message using an ISDN (Integrated Service Digital Network) communication network, the communication controller can also be used. Communicate after storing information in message envelopes. In addition, in Fig. J, the CPUs of the host computer and the terminal device are omitted. As shown in FIG. 1, a USB interface unit (hereinafter referred to as phy) i 1, a USB endpoint controller 12 and an external bus interface unit (b CU ·· B us C ο ntr ο 1 U nit) 1 3. The USB interface unit 11 is composed of an analog transceiver or a serial interface engine, and performs serial and parallel conversion of data transmitted by an independent computer or analysis or generation of a message envelope according to the USB protocol, and controls the interface of the USB bus for data Communication. The external bus interface section 3 controls the CPU and other processing devices of the terminal device or the power IL bus connected to the DMA (Direct Memory Access) controller for negative material communication #. The USB endpoint controller 12 constitutes the receiving endpoint of the data receiving port of the terminal device on the autonomous device side and the two endpoints of the transmitting U point as the transmission port, which are the buffering part for the host computer to send and receive data. In this embodiment, the case where the USB endpoint controller 12 has one transfer endpoint and one receive endpoint will be described. However, a plurality of transfer endpoints and receive endpoints may be used. In addition, the USB endpoint controller 12 may have a plurality of memories, and one or both of the transmission endpoint and the reception endpoint may have a double buffer structure. Set up a transmission control section on the USB endpoint controller 12 and a reception control section

Page 11 1227979 V. Description of the invention (6) 19, buffer control unit 24 and memory 25. As shown in the description, according to the buffer structure of the host computer and the terminal device = = =; control the storage of the data stored in the buffer: has = 5 changes. Control the number of messages stored in the memory 25: the continuation of the change of the end point of the heart, crying, generating ^ σ ^ ', transporting the end point and receiving = 2 of the Chongyi structure, and controlling the buffer storage Sadness changed. For example, the main memory device assigned as a flash, " buffer can be used as the J body = ^; IDE (Integrated, ce E1 ec t ron, cs) ^ JJ ;; # between the auxiliary memory devices Buffer for data communication such as Flash Cache (Disk Cache), etc .: Master; ▲ Memory 25. Memory 25 is used at the transmitting and receiving endpoints::,: The endpoint or receiving endpoint can be used as Shared buffer assigned buffer: This moxibustion ΪΓ: 2 The memory is structured as a double buffer: a shared buffer for memory, a buffer for transmission, and a #buffer are set in the transmission control unit 14 for transmission. Side control unit 15, transmission Toggle flag unit 16, transmission BCU side control unit 17 and transmission buffer interface unit 18. The transmission PHY side control unit 5 controls the transmission, and it is used as a buffer readout for transmission Data input back = The second control unit 15 has a read counter corresponding to the memory 25 and outputs the read address of the memory 25. The BCU-side control unit 17 for transmission is assigned to a buffer state that is used as a buffer state for transmission. S Self Memory 2 5 Writes data from external bus interface 413 The BCU-side control unit 17 for transmission has a write function corresponding to the memory U. The ten-digit state 'output ^ self' (thinking address of the body 25. Transmission ding 0gg 1 e flag 1227979 V. Description of the invention (7) The BCU-side buffer or PHY-side buffer of the hidden body 25 refers to "memory data has been transferred and memorized _. Cut :; write the data of the BCU-side buffer, for transmission _ supply;!? Use buffer The controller interface unit 18 corresponds to the Toggle flag for transmission: write bit: from side t, value ,,, ^ ^ writes data from the controller unit 17 on the BC U side of the transmitter. The body 25 and the U interface unit U It is supplied to the memory PHY side control V part which becomes the PHY side buffer; 5 Read out the corresponding read address', and then send it to the transmission

Toggle flag section: = side control section 20, receiving cry tile and all 99 receiving BCU side control section 22 and receiving buffer;, the material written * 2 owing PHY side control section 20 has 25 pairs of the memory The control unit 22 of the dual-use counter-pirate 'output memory 25 has been designated as a receiving buffer ... The second C: tr body 5 is output after Γ. The receiving BCU-side control unit 22 is provided. And the reading counter for reading Λ manages the BCU side of the memory 25, which is slowly changed into the completion / successful state. The right side is written into the PHY side buffer: 丄 rush: 1 Γ ggle 旗 标 切 # The BCU-side buffer right '”°° tool change. The receiving buffer interface unit 2 3 supplies the memory 25 and L-body 5 that become the m-side buffer according to the receiving receiving dragon. Write the address and write the data from the receiving PHY-side control unit 20. Also, the receiving buffer interface is initially supplied with the memory 25 that becomes the regular buffer and the corresponding memory 25. Page 13 1227979 V. Description of the invention (8) = 2 After reading the data with the reading address of the 4 device, control the 24 spleen to the receiving side. 2 The endpoint controller 12 uses the buffer control unit 24 to assign the memory 25. The buffer for transmitting the endpoint, and the buffer structure of the memory 25 is determined according to the communication mode of the host computer. The storage state of the data stored in the buffer is changed. UsB end% = :; rT〇ggie The second transmission for the instruction transfer of the flag section 16: 43 transitions = memory 25 to delete side buffer and phy side BC; Λ-Η 3 ^ # ,, BCU side strand balance 4 Υ ^ ί The storage state change side becomes writing. Also, the USB endpoint controller 12 uses the transmission: the m-side control unit 15 is used to buffer itself on the P ； γ side; Storage state change side = interface. In this embodiment, the USB endpoint protection mechanism is used. The communication mode between the host computer and the terminal device is determined according to the manufacturing process. The storage is controlled by a buffer. 12 According to the receiving from the ffiTggggle flag _ 1, =. The USB endpoint buffer interface section 23 self-constitute the buffer; the body: 接收 'ΛΡΗΥ for display reception, and the buffer of the data from the PHY side control section 20 1 邛 11 The input is received as the memory of the BCU side buffer. The storage state changes to BCU # 1 ^ #J ^ 22 ^ ^ # f, i ^ 1 2 i, J w 攱 state memory 25 reading

Page 14 1227979

After the storage state is changed and the data is output to the outside, it is ordered to output in the buffer interface section of the data. An example of the form of the action of the value ί. Then there are many reasons for transmission = round early position (data management) structure 'for example, if the column two to two computer transfers round data to the terminal device (listing machine), it is transmitted = ^ reason multiple data processing data structure, # Fetching images using a scanner—in the case of transmitting data from the terminal device (scanner) 2 to the host computer like a material, the BCU transmits data for multiple in processing data. FIG. 2 is a schematic diagram showing a structure example of processing data. As shown in FIG. 2, the processing data 38 is composed of three types of message covers: a token message cover 38a, a data message cover 38b, and a link, and an exchange message cover 38c. Initially, the autonomous computer sends a token message cover 38a with the device address and endpoint information to the terminal 4. After decoding the token message cover 38a in the USB interface section, and giving the token to the terminal device with the symbol I, it is determined that the data =] = the endpoint. After deciding on the endpoints assigned to the data transfer, the USB endpoint controller 12 is transferred to the endpoint number and the type of the tokens assigned to the data transfer. The USB endpoint controller 2 prepares for transmitting or receiving a data message cover 38b according to the types of endpoint numbers and symbols assigned during data transmission. For example, according to the initial OUT token message cover 38a, after determining which receiving endpoint should be used to receive data, use the determined receiving endpoint to receive the data message cover 38b sent by the autonomous computer. The USB device controller 1 shown in Figure 1

In the case, the memory 25 designated as the receiving buffer stores the serially-parallel-converted data on the USB interface face 11. After receiving the data message sent by the autonomous computer with the determined receiving endpoint 3 8 b, use the connection exchange message cover 3 8 c

Page 15 1227979

Receive the next information. 5. Description of the invention (10) Notify the host computer whether to point the controller 1 2 to output the connected face 11 according to the connected USB bus. The data memory 25 (the BCU side generates the normal received data that stores the data and stores it in memory. After the information of the parent exchange is passed to the USB interface section π, the information of the USB exchange of the parent exchange generates a connection exchange message cover 38c. The data transmitted to the N-knowledge device consists of multiple consecutive processing resources. In the case of data reception, the storage status of the buffer changes when multiple endpoints are processing the data, and the storage status of the material is changed to the best by the expected health status. In the state, the data can be read into the terminal device 2 from the buffer device. The buffer device can be emptied, and the memory 25 (the buffer on the PY side) can be read from the terminal device like the image data with a scanner. Scan the transmission of data to the host computer according to the initial INN message, which transmission endpoint should be used to transmit the data. In the case where the USB device controls cry 10 as shown in Figure i, the USB interface unit 11 transmits the data. Use The information stored in the device is imported. After being converted in parallel, it is transmitted to the host computer as a data message cover 38b. The MB point controller 12 identifies whether the data transmission was successful based on the connection exchange message cover returned by the autonomous computer. Also, The processing of general data transmission is composed of more than 3 U processing data 38. If the transmission end point can be used to change the storage state of the buffer, the storage state of the data in the buffer can be changed to the highest state. The data transmitted from the memory 25 (PHY-side buffer) can be used to generate empty positions for storing data, and the next data from the terminal device can be written to the memory 25 (BCU-side buffer). When the USB device controller is constituted as shown above, the buffer cry 1227979

The control unit 24 assigns the memory 25 as the brain of the transmitting endpoint or the receiving endpoint! The connection mode of the end split is stored in the memory 25 :: the number of flood hearts can determine the buffer structure of the memory 25. The profit control unit 24 can change the number of messages stored in the memory 25 by changing the number of messages stored in the memory 25. The mode allows the memory 2 5 to store data received in message envelope units. ^ If 'in the case of using 512-byte memory 25 to communicate according to the HS mode or the FS mode with a smaller communication capacity than the HS mode, the buffer control is = the number of messages stored in the memory 25 is modeled, Make it ^ the valley of the heart ϊ is a 5 1 2 bit group] message seal buffer structure; in the mode due to the capacity of 1 / interest seal is the maximum message transfer volume (bulk transfer) of 64 bits The group can control the number of message envelopes stored in the memory 25, and becomes a structure including 8 message envelopes. As will be described later, the buffer control unit 24 controls the number of messages stored in the memory 25, and changes the storage state of the data by using a buffer that has become empty due to transmission and reception, so as to avoid the host computer and the terminal device. A NAK response occurs in between to prevent transmission waiting or receiving waiting. In addition, in this embodiment, the USB device controller 10 is configured as shown in FIG. 但是, but in short, as long as the structure is determined according to the connection mode, the buffer structure of the memory 25 is used, and the buffer control unit 24 is used to buffer the stored data. The storage status of the device can be changed. ▲ Describe the communication form of USB transmission and the memory that changes the storage status according to the communication form. Fig. 3 is a flowchart showing an example of a storage state of a buffer for storing data performed between a terminal device and a host computer. Here, as shown in Figure 3, the USB function using the USB 2.0 device with USB 2.0 specification is connected to terminal devices such as list machines according to the HS mode or FS mode of the communication mode.

Page 17 1227979

V. Description of the invention (12)

The computer body of the host computer 'performs 5 1 2 byte data communication. In addition, using FIG. 3, the case of transmitting data according to the connection mode of the HS mode or the FS mode will be described. However, for example, the lower-order mode of the LS mode may be used, and the higher-order mode of the Hs mode may also be used. In this case, select the USB function device according to the connection mode between the terminal device and the host computer. In addition, in this embodiment, the data communicated between the host computer and the terminal device are temporarily stored in the memory 25 designated as a buffer of the 2 bit genset, but for example, it has a ratio of 1024 bytes. A buffer of 5 1 2 bytes of higher order capacity is also available. As shown in FIG. 3, the autonomous computer transmits a plurality of processing data to the terminal device in units of message envelopes (S41). At this time, the terminal device is connected to the host computer via the USB interface, and in the case of USB such as υδΒ2 · 〇 specification, the data communication is performed according to the connection mode such as the mode or the HS mode. In the case of the connection mode fHS mode, the capacity of storing data is 512 bytes. The memory 25 of 512 bytes becomes a buffer structure. In 1 message, the buffer stores 512 bytes. Information (S42a). In the case where the connection mode is ^ board instead of HS mode, the maximum transmission time limit for mass transmission of FS mode is 64 bits, and 5 1 2 bytes of memory 25 becomes 1 The capacity I is a 64-bit sm, which is also added, and the 8 bursts are structured, and each of the δ message envelopes stores 64-bit data (S42b). Therefore, the information of the 512-byte memory 2 5 is blocked by Putian Yi |% 白 u [,. ^ F struct w is different from the size of the connection block depending on the connection mode, and is different in the HS and FS modes. . Therefore, the memory structure of the memory 25 is determined according to the connection mode, and data is stored in each buffer. In addition, 1 message seal buffer! ! Means a buffer that stores the data received according to the message envelope unit, and stores the data of the message envelope in the 1 message envelope buffer. mouth

1227979 、 Invention description (13) __ In the case of HS mode or end device and host computer according to J Daxun 4, Feng Da * *, the buffers assigned to the memory can finally adopt various structures. A description will be given of a configuration example of a buffer structure for processing data by using the message f using FIG. 4. At this point, J Xi = 1 in the 512-byte buffer of the information processing device is about one of the 512-byte upper orders such as 1024-bytes = for example, it is also possible. Fig. 4 (a) shows the structure of the buffer 41 according to the HS core connection after the 512-bit L and the t-body 25 are set in a single buffer structure. In the main case, the same is described above. Here's the information. In the FS mode, the most common 42 is composed of 8 messages of 64 bytes in a capacity of 64 bytes, and the buffers 42al to 42a8 are constituted ... Cover 4 (e), which can be explained according to the HS model and model) and drawing. In this case, the structure of the 512-byte system of the solid memory system is shown in Figure 4 (c). According to the HS model, the capacity of the structure is 2 message packets of 512-byte. The buffering and buffering 43 becomes a structure of 4 3a1 and a message sealing buffer 43a2). As shown in Figure ^^, the buffering buffer mode specifies the maximum message envelope capacity as 64-bit ld), as shown in the figure below. In the FS, the message buffering buffer is divided into 8 bytes in bytes. On the whole, 16 message buffer buffers are buffered, and the structure is reduced to 4 4al6). In addition, as shown in FIG. 4 (e), in the case of the double buffer structure of the 44-byte buffer of the f buffer, the 5 1 2 buffer of the slow solidification and memory system is the 64-byte buffer of two message buffers. Structured as a message envelope. Use FIG. 5 to illustrate the data in the memory that is assigned as a buffer.

1227979 V. Description of the invention (14) mm. Figure 5 is a diagram showing the mode of transmitting data by the storage state of the buffer. Θ indicates the case where the autonomous computer sends data to the terminal device such as the list machine. Second, the terminal device such as the scanner changes the state of the host computer. It is based on two rows of machines, buffers and buffers of 4 punches. After storage of the body 25, according to the FS hibiscus ten, early ,, the record of 5 1 2 bytes is set in the punch structure. The double buffer structure is used: Connection, but as shown in Figure 4⑷

Mode connection :; set: a; 5 乂 bytes of memory in accordance with FS in Figure 4 (b:: sample, can change the storage state of the data. 隹 aub) when the buffer is not: at The memory of the Lithuanian group becomes the buffer structure of the 8-bit buffer of the buffer group. There are 8 messages. 1 When the computer is not receiving data, it is empty. = °. The buffer is U, V of 1 message cover component of the group. The amount is: the material is stored in the message cover buffer chest (Figure 2 shows the message cover of the seven-heart seal buffer 42al, for example, having: t;:, 〇ϋτ ,,,,,, 〇 ,, t, „When there are 3 message covers, such as the data message cover of the 64-bit 疋 group, the data such as 1 backup is not stored in the message cover. 3) No. 4 2. After receiving each message cover on the autonomous computer, it is stored in the message cover buffer 42a5 as shown in Figure 5 (c). According to the information of the picture cover message cover, it becomes full of the message cover buffer. Figure 5 (d) shows the case where the CPU of the terminal device reads out the data stored in the message sealing buffer 42al. The reading of the data in the buffer 42al of the heart is finished. 2: The message sealing is as slow as Figure 5 (e)

Page 20 1227979 V. Description of the invention (15) The buffer 42al becomes empty. As shown in the message envelope buffer 42al, from: The CPU reads the associated exchange message envelope buffer 42a6 stored in the host computer and stores it in the message envelope buffer J: the second envelope data. This completed buffer temporarily uses 6 ° of 64 bytes from the state of the transformer during the period from the 18th to the 18th. ° The message sealing buffer with ten straight blades is buffered to 4 2 The message sealing buffer The status of the buffer is changed. As shown in Fig. 5 ~~ The contents of the message cover f 42a2 to the message cover buffer 42a6 are stored in the message cover buffer 42a to the message cover buffer 42 & 5, 'oka to the flood cover seal buffer 42 The storage status of the data is changed to 2 f; :) -like 'order' in the buffer buffer 42a5-5, the message buffer buffer is stored = the hunter moves in the buffer 4 2R printed from & / shell material Sadness. The first message is sealed, and the message uses the empty message to seal the buffer 42. The second evil is turned into an unused state. As shown in Figure 5, the household buffer *, in the buffer buffer 42a8 f Μ ^ ί4ί ^ 42a6 ^ ^ t ^ ^ ^ data. Then, the cpu of the terminal device is different from the information stored in the heart seal knife, which is selfish / feeds out the Beko heart seal buffer in the buffer box 42al of the flood seal 4 2 a 1 becomes Yunzhuang self-taught ^ ^ Buffer Buffer data stored below 42a2 Mobile data message seal buffer. Use the guard to cry and be prepared to change the storage state, but you can use the data based on the buffer. Storage. ”The address of the stored data, etc.

Page 21 1227979 1 V. Description of the invention (16) For example, as shown in FIG. 5, a eight # FREE Buffer control unit 24 calculates the message cover: the second one: material ”^ The information stored in the message cover buffer 42a2 can be obtained. The address of 3 makes = :: will: interest r slow two ====: buffer control unit 24 ii: JS ^ 4212 data stored-sample, mouth / 1 〇c heart seal buffer 4 2 a 3 Zhixun auto-shooting short t benefit 4 2 a 6-4 The main message buffer buffer stored in the message buffer buffer 42a2 to the message self-seal _ ^, 'the address of the bucket, I moved to the message change. "Seal buffer 仏 5 'so that the storage state of the data' is then controlled according to the general way of storing the number of messages such as HS mode or Fs mode 25 in the memory. Buffer structure of Μ, and = 25 high-efficiency robust storage receiving: ㈣, avoid NAK 燮 ϋ ϋ between ；; 疋 疋 土 土 土 土 土 土 土 土 土 土 土 土 土 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 土 土 土 土 土 防止 防止 防止 防止 防止 土 防止 土 土 土 土 土 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 通信 防止 防止 防止 Communication speed The content of the message envelope is stored in the storage location of the information that remains in the empty state. 'Can store the remaining message can be high = two =, and' is sending the message envelope to the buffer. When the main power overshoot is healthy after closure of the message data, transmission of information in communication mode control information to be transmitted Yanyue = a hexyl. Therefore, according to the number of messages stored in the stored data Z25 at the rate, the memory 25 is efficiently used to prevent the communication speed of the data from decreasing, and in addition, as shown in FIG. 5 *, the buffering speed η is reduced. 7 After the buffer storage state is changed, make the page 22 1227979 Description of the invention (17) Move the buffer remaining in the empty state to the secondary transmission message to seal the buffer 42al; Seal: If the material f is the case, make 42al to the terminal The device's CPU sends a message. The transmission of the signal heart seal buffer becomes an empty state. ， Using to marshal data due to the message… Because it can prevent the data from being transferred, the CPU can be transmitted efficiently. &Amp; 入 箄 # Ｍ ^ 之 通 ^ The speed is reduced. The terminal device reads the data and reads it. Into.罝 之 07 When the storage state of the buffer state is changed, the order of the data of the unit # 赵 心 ί unit makes the storage state% 3 (..., 7 the order of the data transmitted by 25. For example, the “cross” can control the self-memory After the device 42al stores the initially received data, it will return to its original location. Miscellaneous in the message envelope buffer will be stored in the message envelope buffer 42a2: of: m ', but the data is transmitted. In: "= 忆 忆 体 25 健 存 的The sequence of the data can be transmitted in the data message in the memory in a highly efficient manner. The receipt is sealed and used. Figure 6 illustrates another example of the storage state of the data in the buffer. Figure 6 It is a pattern diagram showing the storage state of the buffer. Here, • ru ^ 1D £ (Integrated Device Electronics) mode of the auxiliary memory device such as data transmission, but from the auxiliary memory device to the host computer's cpu The situation is the same, the buffer storage state of Disk ^ ache is changed. In Figure 6, as shown in Figure 4 (d) above, two 512-byte memory units are set up with FS and FS Mode connection, but for Figure 4 (b) shows a single-buffer structure with a memory of 51 2 bytes. According to the instructions from the CPU of the autonomous computer to the IDE (Integrated Device) method, it is ff 笪 姑 # — k 4 ^ ... One…

Page 23 1227979 V. Description of the invention (18) Remote control of the user ’s, F S mode ^ In addition, the explanation is transmitted to the assistant Er Yi ^: The storage state of the: f material is changed. In the case of the bit 7 ^ group, the earliest position of the first magnetic field of the second magnetic field is 1 magnetic field 512, and the capacity other than 512 in the buffer valley can be used as shown in FIG. 4 (d). At this time, the buffer 44 is constructed in two 512-bit construction states' according to the 16-message of 64-byte capacity connected in a pattern = f memory, and the buffer 44al 6 is composed of one buffer. Two = message envelope buffer 4 "丨 is empty when receiving data, but autonomous: when the autonomous computer receives the message envelope 3 message envelope, the month, month; 4-byte dagger: punch 44al to the message envelope The buffer "a3 helps to cleverly seal = ^ §44al to the message envelope buffer 44a3 ~%, envelope or data message envelope, etc. Autonomous computer receives 1 series. The amount of alum is 64-bit information. Self-private information # 情 情 心 封 之 贡 ， 容 ， 5 from Beixinfeng Temple, as shown in Figure 6 (b). The data is stored in the message buffer buffer 44a4 to: buffer buffer 44a8 'write 5 messages to the auxiliary memory device: if the second is' ... the computer receives each message and stores it in the buffer-, as shown in 6 (b), according to The message unit receives a total of δ message ^ = fills the message message buffer 44al to the message message buffer 44a8 / ^ '^, and the auxiliary memory device uses the host computer's CPU to write without writing and waiting: the amount of data. Then, according to the transmission from the CPU of the host computer or the transmission mode automatically changes to the transmission mode, for example, as shown in ^ c), 'transmit 2 packets of data to the CPU of the host computer, two ... The envelope buffer 44al and the message envelope buffer 44a2 become empty. again

1227979

= c) ^ The auxiliary memory device reads data from the CPU of the host computer and receives 3 messages in the empty message buffer buffer 44a9 to message buffer 44a, and stores them after the cpu knife C. In addition, as shown in FIG. 6 (a), 5 pieces of information are sent to the host computer, ‘Badan ’s message buffer buffer 44a3 to message buffer buffer 44a8. Earth Dagger 'sends data to the CPU of the host computer, and stores data of the 5 message envelopes of the "quoted material message envelope" of the autonomous computer in the message Γρπ 姑 \ 冲 器 4481 2 to the message envelope buffer 44al 6 , In the auxiliary record

Pass, information of the amount of information. At this time, the CPU j α buffer 44al to the message buffer 44 of the host computer temporarily use the 64-byte 16-message component of the message packet buffer "" into * Ϊ ΐ Message seal buffer change: The state of the two buffers is temporarily changed by the state of the buffer used in the air knife. As shown in Fig. 6 (e), let the device go to Γ 息 息 封 ^ 4 4 a 8., 'Move to sR heart seal buffer to 4 4 a 1 to message cover buffer cry state change; Ϊΐ 哭 Γ,) the same, let The data in the buffer 44: the stored message seal buffer t :; the buffer message seal the buffer 44 at 8 o'clock m is the state of lean material. Because ... there will be no transmission of 8 messages of 1 magnetic division of the auxiliary Γ memory device. The status of the message holder stored in the buffer of the five message envelopes is reduced to 4439 until the message envelope buffer 44a16 becomes an empty envelope buffer 44a8. After the deletion, send the message to the buffering buffer 44a5 to the message status ~, ..., and the host computer's CPU.

1227979 V. Description of the invention (20) The data stored in the buffer 44a to the message holder, the message buffer 44a9 to the message buffer H, and then received in the message ::; = 44a "6 When the CPU 44a8 storing the autonomous power becomes empty, the state 44a 1 is shifted to the message buffer buffer "... the use of the component = the change in the state of the storage, which can be mined." As shown in FIG. 6, the storage of the P material is performed as shown in FIG. 6. When the level of the message is equal to the address level of the message, the control unit calculates the message seal / 9 of the message is stored in the message seal balancer 44a9.枓, the address, after the punch 4 4 a 1, the address becomes self-excitation, the address becomes an alum seal, and the address is stored in the flood seal buffer 44a9. The testimony was calculated by the testicle 44. Also, the data of == f4a9 was moved to the message sealer control unit 24 and newly assigned: :: ⑽ 44a16-7 news from the message seal buffer 44al0 to the message seal buffer. Sealing buffer 44al 至 讯 自封 催 彳 # 1 ^ digit position, so move to the message to change. "Seal ― to change the storage state of the data, then press For example, HS mode or Fs mode is generally used to refer to ^^ body 2 5 stored information from the number of —, σ pull-type control in memory _ ^ ^ in the number, determine the buffer of memory 25. If the wrong person makes the buffer storage The state changes 1, and the memory 25 efficiently stores the received data. Therefore, the mode is in the communication mode and the memory 25 is highly efficient .: Since the self = NAK response between U and the auxiliary memory device; Waiting can prevent the communication speed from decreasing. For example, such as: stop sending data not to “shift the data of 1 magnetic division of the auxiliary memory device; empty 1227979 V. Description of the buffer of the state of the invention (21), It can store new message envelopes in the magnetic field at eight deniers. It can save the storage material of each shell-shell material. It can load the information of the seal unit to the auxiliary memory. It can efficiently and surely buffer in the direction of f. The device sends data, and the host computer that sends the data may not send the data stored in the message envelope. Therefore, according to the communication mode, the transmission data of Jiheng is controlled, and the memory 25 is efficiently stored. The storage speed is reduced, and the communication speed is reduced by making the buffer cry and preventing poor communication. Changes in the state of health can improve the data. In addition, as shown in Fig. 6, today Sui Wu and Wu ’s mobile assistants have one of them; the storage state is changed ', and the mobile assistant is changed. In the case of the information stored in the message cover of Zhejie 7 that is set by the user, it can be buffered from the buffer state of the host computer to transfer from the buffer state of the work center. In the empty state, position 1 can transmit data efficiently, and the storage speed of transmitting data is reduced. X, because the CPU that can prevent the access to the data of U 2 data will not be able to read and wait for the data to be obtained. The speed will decrease once, and the host computer will remember the data of one magnetic discriminator of the device. 'Qi Jing into the auxiliary record and when the storage state of the buffer is changed, the unit of eight interest rate: the point where the storage state is changed =: For example, as shown in Figure 6, in the equivalent of 1 = division t :: 冲Yi 44al to the message envelope buffer 44a8 stores the first received ΓΓΓ: It is transmitted from the memory 25, but the message envelope buffer 44a9 to the message seal is equivalent to one sector of the auxiliary memory device.

Page 27 1227979 V. Description of the invention (22) The punch 44al 6 is moved to the message envelope buffer 44al to the message envelope buffer to transmit data from the memory 25 in the future. One can be transmitted in the order of the data stored in the memory 25 Information on magnetic differentiation. Therefore, by controlling the order of the data transmitted from the memory 25 and the memory 25, the received message can be reliably stored in the memory 25, and the received message can be sealed from the received message to the auxiliary memory device in order to efficiently write the received data together. Message cover. Describes the buffer control unit that changes the data storage status according to the communication form of USB transmission. Fig. 7 is a flowchart showing an example of the operation of changing the storage state of the memory. First, the buffer control unit 24 specifies the communication mode between the host computer and the terminal device according to the flowchart described in FIG. 3, and determines the structure of the buffer of the memory 25 (S50). Here, the case of using the single buffer structure to set up 51 2 bytes using the single buffer structure as shown in Figure 4 (b) is explained. However, for the case shown in Figure 4⑷: 体] = :: & 2 sets a memory of 51 2-bytes and connects in accordance with the FS mode. The same is true. The controllable memory of the buffer control section is divided into 8%-^ / the bottom of the punch 5 is changed to 64 bits group. Then, as is not the case in S51, the buffer control unit 24 recognizes the stored message from the buffer control unit 24, for example, remembers: save :, the sealed message seals the buffer location. Identified the stored message. The message envelope received by the computer is on the right | L 疋 whether there is an autonomous message envelope (S53b). Buffering and crying protection: The status of the f message heart seal is stored and received. The back punch is the control department to identify the received message when it is stored. 1227979 V. Description of the invention (23) The state of the message seal is stored again. As shown in% 2, when the message f is not received, the buffer control unit recognizes, for example, whether there is a CPU of the terminal device. After sending out the alum information envelope (S 5 3 a), in the case of the transmitted message envelope, an empty message envelope buffer occurs, and after identifying the empty message envelope buffer-(S 5 4 a), Make the buffer the overall storage state change (s 5 5). The storage state change of the buffer ^ is, for example, the movement j of the entire buffer as shown in FIG. As shown in S53a, in the case of no message transmission, buffer control Then, go back to confirm whether there is step S52, and then perform the above steps. As shown in no transmission S54a, two? When emptying the buffer of sorrow, as above, if the storage state is changed after changing the buffer, the overall state of the buffer is changed, so: The control unit controls the storage state of the buffer and controls the change / step of the storage state. Reconfirm the storage status of the buffer: “The connection mode is slowed by the buffer control mode and other modes: = and ▽ I only see the change in the storage state of the buffer. The structure of the buffer can be changed. You can store a new message cover at the storage location controlled by the punch control section, and you can save the information cover of the aluminum seal. In addition, the main data of the transmission data = the time-efficient storage information. The transmission data waiting for the transmission can not occur in the heart = side device, and the buffer control unit is lowered according to the connection mode. Memories 25 rounds of efficient storage of the message envelope unit constitute a buffer, and keep it in mind, and make the buffer 1227979 V. Description of the invention (24) The storage state can be changed, so that the memory can be controlled according to the communication mode. Rate: Save data. Because of the factor, the number of messages stored in the Li 25 chair is the same as the data stored in the U5, which not only prevents the speed from decreasing, but also makes the communication speed of Crypton ’s communication through buffering cry. ★ Rush. . The change in the storage state of cancer can improve the data. As shown above, in the case of using a USB2 USB standard electric transformer to change the date! = The case of the device's connection. Let be assigned = save = change, W memory assigns multiple message envelopes:;, Ϊ; ... Ϊί ^^ sad message envelope buffer to store data. Therefore, in the case of sealing the letter, you can also store the sfl in the buffer with high efficiency before entering the lamp. The main Xuecong ^ crumbs, " Wang Sixi can pass on the poor material, and the transmitting computer will not There is a transmission waiting, but it will not send it: So: because the host computer may not have a transmission waiting program = transmitting materials, the communication is based on the FS mode, and data communication can be performed without reducing the communication speed of ... In addition, for example, when using a USB 2.0 standard USB cable to transfer data m from the terminal to the host computer, communication is performed in accordance with the Mo mode, and by using the buffer control section, the buffer memory assigned to the memory can be used. Change and re-save the data to the buffer which becomes empty. You can re-save ^ data by yourself, and the buffer can transfer the data efficiently. Therefore, the host computer can also receive the data according to the situation that the communication card 5 is ordered in a mode. The master + monthly packet that receives the data will not, the transmission will wait, and the response to the terminal device will not occur. Therefore, because the host computer does not have a transmission waiting or NAK response & 1227979 V. Invention Description (25) The receiving of data is based on the FS mode of communication, and the data communication can be performed without reducing the communication speed of the data. Moreover, in the case of data communication such as writing data to the auxiliary memory device by the CPU of the host computer, by changing the storage state of the control buffer, it can be simultaneously written into one magnetic area. Therefore, the CPU of the host computer can efficiently write data to the auxiliary memory device, which can increase the data writing speed to the auxiliary memory device. Moreover, the same is true for the case where the CPU of the host computer reads data from the auxiliary memory device. By controlling the change in the storage state of the buffer and reading into one magnetic zone at the same time, the self-assisted memory device can be efficiently operated. Reading data can increase the communication speed of data communication between the CPU of the host computer and the auxiliary memory device. Advantageous Effects of Invention The present invention can provide a communication controller and a communication method, which can suppress the state of rejection between the host computer and the communication host computer when data is communicated according to a message unit.

Page 31 1227979 Brief description of drawings 5. [Simplified description of drawings] FIG. 1 is a block diagram showing the outline of a communication system according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing data in an embodiment of the present invention. Fig. 3 is a flowchart showing a communication form of a communication system according to an embodiment of the present invention. Figs. 4 (a) to (e) are schematic diagrams showing the health status of a message buffer in a communication system according to an embodiment of the present invention.

Figs. 5 (a) to (g) are schematic diagrams showing the storage state of a message buffer in a communication system according to an embodiment of the present invention. Figs. 6 (a) to (e) are schematic diagrams showing the storage state of a message buffer in a communication system according to an embodiment of the present invention. Fig. 7 is a flowchart showing the control of the storage state of the message buffer of the communication system according to the embodiment of the present invention.

Component symbol description 1 0 Device controller 11 USB interface unit 1 2 Endpoint controller 1 3 External bus interface unit 1 4 Transmission control unit 15 Transmission PHY side control unit 6 Transmission Togg 1 e Flag unit 1 7 Transmission BCU-side control unit 1 8 Transmission buffer interface unit

1227979 on page 32 Brief description of drawings 1 9 Receiving control section 20 Receiving PHY-side control section 2 1 Receiving Togg 1 e Flag section 22 Receiving BCU-side control section 2 3 Receiving buffer interface section 24 Buffer control section 2 5 Memory 38 Processing data 3 8 a Symbol message cover 3 8 b Data message cover 3 8 c Link exchange message cover 42a 1, 42a2, 42a3, 42a4, 42a5, 42a6, 42a7, 42a8 Message cover 42al, 42a2, 42a3 , 42a4, 42a5, 42a6, 42a7, 42a8, 42a9, 42al0, 42all, 42al2, 42al3, 42al4, 42al5, 4 2 a 1 6 message envelope buffer

Page 33

Claims (1)

1227979 -------_ VI. Patent application scope 1. A communication controller, which receives and transmits a message after it has been sealed and received according to a variety of communication modules with different amounts of data contained in the message. Its characteristics are: The data is stored in the temporary storage device with 3 Jiyi devices, temporarily stored in the car, and controlled in the record according to the communication mode; and the control device and the control device can be stored in the memory device. Second, the number of stored messages In the case of the second type, in the memory device Yiyi Zhou ▲ Zi Xi's message cover ^, the multiple message covers are temporarily stored in the storage place of the note ^ information cover, and the device I :: 二 Ϊ is made: The communication controller of item 1, wherein the controller is dreaming ^ ^. In the case of communication mode where multiple message covers are stored 1 The auditor changes the memory status of the message 奘 Fancai ~ ^ 1 The storage status of the information cover changes Γ, the storage position of the heart seal and the message 3. If the scope of patent application is the second item The communication cries, and the addiction control device causes other stored reasons. ‘:, The storage position i in the empty state, which is sealed after the shipping information is changed. 4. If the scope of the patent application is L / Λΐ, the storage state is changed. Next order message @ ^ 听 ▲ Solution of the 2nd item ^ Controller, Douzhong, the control pass < congratulations to move to the storage state change due to the transmission of the pass & ^ empty storage position ' 5. The communication controller of the first item of the patent scope, Li Zhong: The 'communication mode includes: 帛, communication mode; and the second communication mode, 讯,' The amount of data contained in the envelope is greater than the number of-communication ,; The memory device has a record, the amount of data, ^ 对应, and the formula corresponds to the information of the amount of data. The phase S and the [通 ⑽ Page 27, 1227979 VI. Application for a patent When the control device receives a message cover of the first communication mode, the memory device temporarily stores a message cover, and upon receiving the message cover of the second communication mode, In some cases, the memory device temporarily stores multiple message covers. 6. The communication controller according to item 1 of the scope of patent application, wherein the data is communicated via a universal serial bus, which is a USB2.0 or higher-level specification. 7 · —A method of communication. According to the unit of message cover, the data corresponding to multiple communication modes with different amounts of data contained in 1 message cover is received and transmitted after being temporarily stored in the memory device. Its characteristics are as follows: To specify the communication mode; and a control step to control the number of messages stored in the memory device in accordance with the specified communication mode; in the mode designation step, to specify a communication mode in which multiple messages can be stored in the memory device In the case, a plurality of message envelope storage locations are set in the memory device. In the control step, in a case where the memory device can store a plurality of message envelope communication modes, a plurality of message envelope storage locations are temporarily stored in the memory device. Messages. 8. If the communication method according to item 7 of the scope of patent application, in the case where the memory device can store a plurality of message cover communication modes, the message cover is closed by changing the storage position of the message cover in the memory device. Storage status changed. 9. If the communication method of the scope of patent application No. 8, wherein, by order Page 35 1227979 VI. Scope of patent application Other stored information envelopes are moved to a storage location that becomes empty after the message envelope is sent, which changes the storage state of the message envelope. I 0 · The communication method according to item 8 of the scope of patent application, wherein the message cover is transmitted in the order stored in the memory device, and the next transmitted message cover is moved to a storage position which becomes empty due to the transmission, and Change the storage status of the message cover. II. The communication method according to item 7 of the scope of patent application, wherein: the plurality of communication modes include a first communication mode and a second communication mode In the mode, in the mode designation step, when the second communication mode is designated, a plurality of message storage locations are set in the memory device. In the control, Step: When the message cover of the first communication mode is received, the memory device temporarily stores one message cover, and when the message cover of the second communication mode is received, the memory device temporarily stores a plurality of messages. Message cover. 1 2. The communication method according to item 7 of the scope of patent application, wherein the data is communicated via a universal serial bus, which is a USB2.0 or higher-level specification. Page 36