MOTOROLA
Chapter 11. System Interface Unit
11-9
Part III. Configuration
11.4.3 System Protection Control Register (SYPCR)
The system protection control register (SYPCR) controls the system monitors and bus
monitor timing. It can be read at any time, but can be written only once after system reset.
Table 11-4 describes SYPCR Þelds.
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field
SWTC
Reset
1111_1111_1111_1111
R/W
R/W
SPR
(IMMR & 0xFFFF0000) + 0x004
Bit
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Field
BMT
BME
Ñ
SWF SWE
SWRI
SWP
Reset
1111_1111
0
000
0
1
1
1
R/W
R/W
SPR
(IMMR & 0xFFFF0000) + 0x006
Figure 11-4. System Protection Control Register (SYPCR)
Table 11-4. SYPCR Field Descriptions
Bits
Name
Description
0Ð15
SWTC
Software watchdog timer count. Count value for the software watchdog timer.
16Ð23
BMT
Bus monitor timing. DeÞnes the timeout period, in 8 system clock resolution, for the bus monitor.
maximum timeout is 2,040 clocks.
24
BME
Bus monitor enable. Controls bus monitor operation during internal-to-external bus cycles.
0 Disable the bus monitor.
1 Enable the bus monitor.
Note: If the bus monitor is disabled, transfer error conditions do not cause TEA to be asserted.
28
SWF
Software watchdog freeze
0 The software watchdog timer continues counting even if FRZ is asserted.
1 The software watchdog timer stops counting when FRZ is asserted.
29
SWE
Software watchdog enable.
To disable the software watchdog timer, it should be cleared by the software after a system reset.
0 Software watchdog timer disabled.
1 Software watchdog timer enabled.
30
SWRI
Software watchdog reset/interrupt select.
0 The software watchdog timer causes an NMI (system reset interrupt) to the core.
1 The software watchdog timer causes an HRESET (default).
31
SWP
Software watchdog prescale.
0 The software watchdog timer is not prescaled.
1 The software watchdog timer is prescaled by a factor of 2,048.
Summary of Contents for MPC860 PowerQUICC
Page 3: ...MPC860UM AD 07 98 REV 1 MPC860 PowerQUICC ª UserÕs Manual ...
Page 36: ...xxxvi MPC860 PowerQUICC UserÕs Manual MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 78: ...I iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 88: ...1 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 114: ...3 16 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 226: ...8 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 262: ...9 36 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 274: ...III iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 320: ...12 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 325: ...MOTOROLA Part IV Hardware Interface IV v Part IV Hardware Interface ...
Page 326: ...IV vi MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 352: ...13 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 394: ...14 42 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 426: ...15 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 530: ...17 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 632: ...21 44 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 660: ...22 28 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 708: ...24 24 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 748: ...27 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 846: ...31 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 914: ...35 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 948: ...36 34 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 998: ...37 48 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part VI Debug and Test ...
Page 1016: ...A 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1024: ...B 8 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1030: ...C 6 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1086: ...Glossary 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA ...
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