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AT89C51CC02CA-RATUM Datasheet(PDF) 103 Page - ATMEL Corporation |
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AT89C51CC02CA-RATUM Datasheet(HTML) 103 Page - ATMEL Corporation |
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103 / 156 page  103 AT/T89C51CC02 4126J–CAN–05/06 Table 68. CANPAGE Register CANPAGE (S:B1h) – CAN Message Object Page Register Reset Value = xx00 0000b Table 69. CANCONCH Register CANCONCH (S:B3h) – CAN Message Object Control and DLC Register No default value after reset 76 54 32 1 0 - - CHNB 1 CHNB 0 AINC INDX2 INDX1 INDX0 Bit Number Bit Mnemonic Description 7 - 6 - Reserved The values read from these bits are indeterminate. Do not set these bits. 5 - 4 CHNB3:0 Selection of Message Object Number The available numbers are: 0 to 3(See Figure 37). 3AINC Auto Increment of the Index (Active Low) 0 - auto-increment of the index (default value). 1 - non-auto-increment of the index. 2 - 0 INDX2:0 Index Byte location of the data field for the defined message object (See Figure 37). 76 54 32 1 0 CONCH 1 CONCH 0 RPLV IDE DLC 3 DLC 2 DLC 1 DLC 0 Bit Number Bit Mnemonic Description 7 - 6 CONCH1:0 Configuration of Message Object CONCH1 CONCH0 0 0: disable 0 1: Launch transmission 1 0: Enable Reception 1 1: Enable Reception Buffer NOTE: The user must re-write the configuration to enable the corresponding bit in the CANEN1:2 registers. 5RPLV Reply valid Used in the automatic reply mode after receiving a remote frame 0 - reply not ready. 1 - reply ready & valid. 4IDE Identifier Extension 0 - CAN standard rev 2.0 A (ident = 11 bits). 1 - CAN standard rev 2.0 B (ident = 29 bits). 3 - 0 DLC3:0 Data Length Code Number of Bytes in the data field of the message. The range of DLC is from 0 up to 8. This value is updated when a frame is received (data or remote frame). If the expected DLC differs from the incoming DLC, a warning appears in the CANSTCH register. |
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