User manual

75 MIC-3392MIL User Manual
Appendix D CPLD
D.2.3 Watchdog Disable Register
D.2.4 Geography Address (GA)
This read-only address shows the CPCI backplane slot position.
Table D.4: Watchdog [7:0] (LPC I/O address: 444H)
Bits Name Default
State
Valid
State
Read Only Function
7 ~ 0 Watchdog xxh xxh Reading I/O port 444h will disable the watchdog.
The return value is meaningless.
Table D.5: Version [7:0] (LPC I/O address: 445H)
Bits Name Default
State
Valid
State
Read Only Function
7 ~ 4 CPLD
Version
(units)
xxh xxh Read I/O port 444h to get the CPLD version in
BCD.
E.g, for v1.4, the return value is:
Bit 7 6 5 4
0 0 0 1
3 ~ 0 CPLD
Version
(units)
xxh xxh Read I/O port 444h to get the CPLD version in
BCD.
E.g, for v1.4, the return value is:
Bit 4 3 2 1
0 1 0 0
Table D.6: GA [7:0] (LPC I/O address: 447H)
Bits Name Default
State
Valid
State
Read Only Function
7 ~ 5 Reserved X X Bit 7 . Bit 5 are always 111.
4GA4
(MSB)
X 0/1 Bit 4 is connected to the J2.A22 pin.
3 X 0/1 Bit 3 is connected to the J2.B22 pin.
2 X 0/1 Bit 2 is connected to the J2.C22 pin.
1 X 0/1 Bit 1 is connected to the J2.D22 pin.
0 X 0/1 Bit 0 is connected to the J2.E22 pin.