Freescale Semiconductor MPC5200B User Manual
Page 662
Programmer’s Model of Message Storage
MPC5200B Users Guide, Rev. 1
Freescale Semiconductor
19-23
Read: anytime for transmit buffers; only when RXF flag is set for receive buffers (see
Section 19.5.7, MSCAN Receiver Flag Register
).
Write: anytime for transmit buffers when TXEx flag is set (see
Section 19.5.9, MSCAN Transmitter Flag Register (CANTFLG)—MBAR +
) and the corresponding transmit buffer is selected in CANTBSEL (see
Section 19.5.13, MSCAN Transmit Buffer Selection
(CANTBSEL)—MBAR + 0x0914 /0x0991
); unimplemented for receive buffers
Reset: $xx because of RAM based implementation
IDR1
Read:
ID20
ID19
ID18
SRR (=1)
IDE (=1)
ID17
ID16
ID15
$__01
Write:
IDR2
Read:
ID14
ID13
ID12
ID11
ID10
ID9
ID8
ID7
$__04
Write:
IDR3
Read:
ID6
ID5
ID4
ID3
ID2
ID1
ID0
RTR
$__05
Write:
DSR0
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__08
Write:
DSR1
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__09
Write:
DSR2
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__0C
Write:
DSR3
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__0D
Write:
DSR4
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__10
Write:
DSR5
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__11
Write:
DSR6
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__14
Write:
DSR7
Read:
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
$__15
Write:
DLR
Read:
DLC3
DLC2
DLC1
DLC0
$__18
Write:
a
Unused bits are always read ‘x’
Table 19-27. Receive / Transmit Message Buffer Extended Identifier (continued)
Register
Bit 7
6
5
4
3
2
1
Bit 0
ADDR
= Unused
a