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AT89C51CC02CA-RATUM 数据表(PDF) 111 Page - ATMEL Corporation |
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AT89C51CC02CA-RATUM 数据表(HTML) 111 Page - ATMEL Corporation |
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111 / 156 page ![]() 111 AT/T89C51CC02 4126J–CAN–05/06 Table 86. CANIDM4 Register for V2.0 Part B CANIDM4 for V2.0 Part B (S:C7h) CAN Identifier Mask Registers 4 Note: The ID Mask is only used for reception. No default value after reset. Table 87. CANMSG Register CANMSG (S:A3h) CAN Message Data Register No default value after reset. 76 54 32 1 0 IDMSK 4 IDMSK 3 IDMSK 2 IDMSK 1 IDMSK 0 RTRMSK - IDEMSK Bit Number Bit Mnemonic Description 7 - 3 IDMSK4:0 IDentifier Mask Value 0 - comparison true forced. 1 - bit comparison enabled. See Figure 43. 2RTRMSK Remote transmission request Mask Value 0 - comparison true forced. 1 - bit comparison enabled. 1- Reserved The value read from this bit is indeterminate. Do not set this bit. 0IDEMSK IDentifier Extension Mask Value 0 - comparison true forced. 1 - bit comparison enabled. 76 54 32 1 0 MSG 7 MSG 6 MSG 5 MSG 4 MSG 3 MSG 2 MSG 1 MSG 0 Bit Number Bit Mnemonic Description 7 - 0 MSG7:0 Message Data This register contains the mailbox data byte pointed at the page message object register. After writing in the page message object register, this byte is equal to the specified message location (in the mailbox) of the pre- defined identifier + index. If auto-incrementation is used, at the end of the data register writing or reading cycle, the mailbox pointer is auto-incremented. The range of the counting is 8 with no end loop (0, 1,..., 7, 0,...) |
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