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PC312XDP512F0CFVR Datasheet(PDF) 441 Page - Freescale Semiconductor, Inc

Part # PC312XDP512F0CFVR
Description  HCS12X Microcontrollers
PDF  1348 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC312XDP512F0CFVR Datasheet(HTML) 441 Page - Freescale Semiconductor, Inc

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Chapter 10 Freescale’s Scalable Controller Area Network (S12MSCANV3)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
441
10.3.2.17 MSCAN Identifier Acceptance Registers (CANIDAR0-7)
On reception, each message is written into the background receive buffer. The CPU is only signalled to
read the message if it passes the criteria in the identifier acceptance and identifier mask registers
(accepted); otherwise, the message is overwritten by the next message (dropped).
The acceptance registers of the MSCAN are applied on the IDR0–IDR3 registers (see Section 10.3.3.1,
“Identifier Registers (IDR0–IDR3)”) of incoming messages in a bit by bit manner (see Section 10.4.3,
“Identifier Acceptance Filter”).
For extended identifiers, all four acceptance and mask registers are applied. For standard identifiers, only
the first two (CANIDAR0/1, CANIDMR0/1) are applied.
Read: Anytime
Write: Anytime in initialization mode (INITRQ = 1 and INITAK = 1)
Module Base + 0x0010 (CANIDAR0)
0x0011 (CANIDAR1)
0x0012 (CANIDAR2)
0x0013 (CANIDAR3)
76543210
R
AC7
AC6
AC5
AC4
AC3
AC2
AC1
AC0
W
Reset
00000000
76543210
R
AC7
AC6
AC5
AC4
AC3
AC2
AC1
AC0
W
Reset
00000000
76543210
R
AC7
AC6
AC5
AC4
AC3
AC2
AC1
AC0
W
Reset
00000000
76543210
R
AC7
AC6
AC5
AC4
AC3
AC2
AC1
AC0
W
Reset
00000000
Figure 10-20. MSCAN Identifier Acceptance Registers (First Bank) — CANIDAR0–CANIDAR3



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