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AT89C51CC03U-RDTIM 数据表(PDF) 126 Page - ATMEL Corporation |
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AT89C51CC03U-RDTIM 数据表(HTML) 126 Page - ATMEL Corporation |
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126 / 195 page ![]() 126 AT89C51CC03 4182I–CAN–06/05 Table 81. 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 82. CANMSG Register CANMSG (S:A3h) CAN Message Data Register No default value after reset. 76 543 210 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 54. 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. 76 543 210 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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