MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 235

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6.13.3 System Protection Registers
6.13.3.1 System Protection Control Register (SYPCR)
MPC555
USER’S MANUAL
SYPCR — System Protection Control Register
Bit(s)
16:23
25:27
MSB
0:15
16
16
24
28
29
0
0
1
1
RESET:
RESET:
RESET:
The system protection control register (SYPCR) controls the system monitors, the
software watchdog period, and the bus monitor timing. This register can be read at any
time, but can be written only once after system reset.
17
17
/
0
1
1
1
SWTC
MPC556
Name
SWE
BME
SWF
BMT
—
18
18
0
2
1
1
Software watchdog timer count. This field contains the count value of the software watchdog tim-
er.
Bus monitor timing. This field specifies the time-out period, in eight-system-clock resolution, of
the bus monitor.
Bus monitor enable
0 = Disable bus monitor
1 = Enable bus monitor
Reserved
Software watchdog freeze
0 = Software watchdog continues to run while FREEZE is asserted
1 = Software watchdog stops while FREEZE is asserted
Software watchdog enable. Software should clear this bit after a system reset to disable the
SWT.
0 = Watchdog is disabled
1 = Watchdog is enabled
19
19
0
3
1
1
BMT
SYSTEM CONFIGURATION AND PROTECTION
20
20
0
4
1
1
Table 6-13 SYPCR Bit Descriptions
21
21
0
5
1
1
Rev. 15 October 2000
22
22
0
6
1
1
RESERVED
23
23
0
7
1
1
SWTC
BME
24
24
0
8
1
0
Description
25
25
0
9
1
0
RESERVED
26
10
26
0
1
0
27
11
27
0
1
0
SWF
28
12
28
0
1
0
SWE
29
13
29
0
1
1
0x2F C004
MOTOROLA
SWRI
30
14
30
0
1
1
SWP
LSB
LSB
31
15
31
6-27
0
1
1