System Configuration and Protection
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
6-39
6.2.2.3.3
Transfer Error Status Register (TESR)
The transfer error status register contains a bit for each exception source generated by a transfer error. A
bit set to logic 1 indicates what type of transfer error exception occurred since the last time the bits were
cleared by reset or by the normal software status bit-clearing mechanism.
NOTE
These bits may be set due to canceled speculative accesses which do not
cause an interrupt. The register has two identical sets of bit fields; one is
associated with instruction transfers and the other with data transfers.
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
SWSR
Reset
0000_0000_0000_0000
Addr
0x2F C00E
Figure 6-27. Software Service Register (SWSR)
Table 6-16. SWSR Bit Descriptions
Bits
Name
Description
0:15
SWSR
SWT servicing sequence is written to this register. To prevent SWT time-out, a 0x556C followed
by 0xAA39 should be written to this register. The SWSR can be written at any time but returns
all zeros when read.
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field
—
Reset
0000_0000_0000_0000
Addr
0x2F C020
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
LSB
31
Field
—
IEXT IBMT
—
DEXT DBM
—
Reset
0000_0000_0000_0000
Figure 6-28. Transfer Error Status Register (TESR)
Table 6-17. TESR Bit Descriptions
Bits
Name
Description
0:17
—
Reserved
18
IEXT
Instruction external transfer error acknowledge. This bit is set if the cycle was terminated by an
externally generated TEA signal when an instruction fetch was initiated.
19
IBMT
Instruction transfer monitor time out. This bit is set if the cycle was terminated by a bus monitor
time-out when an instruction fetch was initiated.
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...