User manual

63 MIC-3392 Rev.2 User Manual
Appendix C CPLD
C.2.3 Watchdog Disable Register
C.2.4 Geography Address (GA)
This read-only address shows the CPCI backplane slot position.
Table C.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 C.5: Version [7:0] (LPC I/O address: 445H)
Bits Name Default
State
Valid
State
Read Only Function
7 ~ 4 CPLD Ver-
sion
(units)
xxh xxh Read I/O port 445h 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 Ver-
sion
(tenths)
xxh xxh Read I/O port 445h 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 C.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 GA3 X 0/1 Bit 3 is connected to the J2.B22 pin.
2 GA2 X 0/1 Bit 2 is connected to the J2.C22 pin.
1 GA1 X 0/1 Bit 1 is connected to the J2.D22 pin.
0GA0
(LSB)
X 0/1 Bit 0 is connected to the J2.E22 pin.