FlexCAN Module
MPC5644A Microcontroller Reference Manual, Rev. 6
1414
Freescale Semiconductor
Figure 32-11. Error Counter Register (ECR)
32.4.5.8
Error and Status Register (ESR)
This register reflects various error conditions, some general status of the device and it is the source of four
interrupts to the CPU. The reported error conditions (bits 16–21) are those that occurred since the last time
the CPU read this register. The CPU read action clears bits16–21. Bits 22–28 are status bits.
Most bits in this register are read only, except TWRNINT, RWRNINT, BOFFINT, WAKINT and ERRINT,
that are interrupt flags that can be cleared by writing ‘1’ to them (writing ‘0’ has no effect). See
for more details.
Figure 32-12. Error and Status Register (ESR)
Base + 0x001C
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
RXECNT
TXECNT
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Base + 0x0020
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
T
W
RNINT
RWRN
INT
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
BIT1ERR
BIT0ERR
ACKERR
CRCERR
FRMERR
STFERR
TXW
R
N
RXWRN
ID
L
E
TXRX
FLTCONF
0
BO
F
F
IN
T
ER
RINT
WAKINT
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Summary of Contents for MPC5644A
Page 2: ...MPC5644A Microcontroller Reference Manual Rev 6 2 Freescale Semiconductor...
Page 24: ...MPC5644A Microcontroller Reference Manual Rev 6 24 Freescale Semiconductor...
Page 26: ...MPC5644A Microcontroller Reference Manual Rev 6 26 Freescale Semiconductor...
Page 52: ...Introduction MPC5644A Microcontroller Reference Manual Rev 6 52 Freescale Semiconductor...
Page 56: ...Memory Map MPC5644A Microcontroller Reference Manual Rev 6 56 Freescale Semiconductor...
Page 1228: ...Decimation Filter MPC5644A Microcontroller Reference Manual Rev 6 1228 Freescale Semiconductor...
Page 1440: ...FlexCAN Module MPC5644A Microcontroller Reference Manual Rev 6 1440 Freescale Semiconductor...