mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 340
mcf51ac256a
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mcf51ac256a
Description
Mcf51ac Flexis
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCF51AC256A.pdf
(566 pages)
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Freescale’s Controller Area Network (MSCANV1)
Write: For transmit buffers, anytime when TXEx flag is set (see
Flag Register
Section 15.3.10, “MSCAN Transmit Buffer Selection Register
receive buffers.
Reset: Undefined (0x00XX) because of RAM-based implementation
1
2
15.4.1
The identifier registers for an extended format identifier consist of a total of 32 bits; ID[28:0], SRR, IDE,
and RTR bits. The identifier registers for a standard format identifier consist of a total of 13 bits; ID[10:0],
RTR, and IDE bits.
15.4.1.1
15-24
The position of RTR differs between extended and standard identifier mapping.
IDE is 0.
Register
Name
IDR0
IDR1
IDR2
IDR3
Reset:
W
R
Identifier Registers (IDR0–IDR3)
IDR0–IDR3 for Extended Identifier Mapping
Figure 15-23. Receive/Transmit Message Buffer — Standard Identifier Mapping
(CANTFLG)”) and the corresponding transmit buffer is selected in CANTBSEL (see
W
W
W
W
R
R
R
R
ID28
x
7
Figure 15-24. Identifier Register 0 (IDR0) — Extended Identifier Mapping
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
Bit 7
ID10
ID2
ID27
= Unused, always read ‘x’
6
x
ID9
ID1
6
ID26
5
x
ID8
ID0
5
ID25
4
x
RTR
ID7
4
1
ID24
(CANTBSEL)”). Unimplemented for
3
x
Section 15.3.6, “MSCAN Transmitter
IDE
ID6
3
2
ID23
2
x
ID5
2
Freescale Semiconductor
ID22
ID4
1
x
1
ID21
Bit 0
ID3
0
x
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