mc68331cpv20b1 Freescale Semiconductor, Inc, mc68331cpv20b1 Datasheet - Page 229

• Manufacturer Part Number: mc68331cpv20b1
• Description: Mc68331 32 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

D.3.15 SWSR — Software Service Register
D.3.16 TSTMSRA — Master Shift Register A
D.3.17 TSTMSRB — Master Shift Register B
D.3.18 TSTSC — Test Module Shift Count
D.3.19 TSTRC — Test Module Repetition Count
D.3.20 CREG — Test Submodule Control Register
D.3.21 DREG — Distributed Register
D.3.22 PORTC — Port C Data Register
D.3.23 CSPAR0 — Chip Select Pin Assignment Register 0
MC68331
USER’S MANUAL
15
15
15
0
0
When the software watchdog is enabled, a service sequence must be written to this
register within a specific interval. When read, SWSR always returns $00. Register
shown with read value.
Register is used for factory test only.
Register is used for factory test only.
Register is used for factory test only.
Register is used for factory test only.
Register is used for factory test only.
Register is used for factory test only.
PORTC latches data for chip-select pins that are used for discrete output.
RESET:
RESET:
RESET:
14
0
0
DATA2
13
CSPA0[6]
NOT USED
NOT USED
12
1
Freescale Semiconductor, Inc.
DATA2
For More Information On This Product,
11
CSPA0[5]
10
1
Go to: www.freescale.com
REGISTER SUMMARY
DATA2
CSPA0[4]
9
8
8
8
1
DATA1
7
0
0
7
0
0
CSPA0[3]
7
PC6
6
0
0
6
1
6
1
DATA1
PC5
5
0
0
5
1
CSPA0[2]
5
PC4
4
0
0
4
1
4
1
DATA1
PC3
3
0
0
3
1
CSPA0[1]
3
PC2
2
0
0
2
1
2
1
$YFFA3A
$YFFA27
$YFFA30
$YFFA32
$YFFA34
$YFFA36
$YFFA38
$YFFA41
$YFFA44
PC1
1
1
1
0
0
1
1
CSBOOT
DATA0
D-21
PC0
0
0
0
0
0
1
D