EKF PC7-FESTIVAL, User Manual

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User Guide • PC7-FESTIVAL • CompactPCI® PlusIO CPU Board
Read/Clear Status Register 1
Write: SMBus Address 0xB2
Read: SMBus Address 0xB3
Bit Description CMD_STAT1
7 WDGARMD
0=Normal operation
1=The watchdog is armed and has to be retriggered within its time-out period
6 WDGRST
0=Normal operation
1=Last system reset may be caused by a watchdog time-out
5 WDGHT
0=Normal operation
1=The watchdog already has elapsed half of its time-out period
4 PF5PS
0=Normal operation
1=Last system reset may be caused by a power failure of the +V5PS voltage regulator
3 PF5S
0=Normal operation
1=Last system reset may be caused by a power failure of the +V5S voltage regulator
2 PF33L
0=Normal operation
1=Last system reset may be caused by a power failure of the +V3.3LAN load switch
1 PF33A
0=Normal operation
1=Last system reset may be caused by a power failure of the +V3.3A voltage regulator
0 PF33S
0=Normal operation
1=Last system reset may be caused by a power failure of the +V3.3S voltage regulator
Except of WDGHT and WDGARMD the bits in this register are sticky, i.e. their state will be kept
even if a system reset occurs. To clear the bits a write to the register with arbitrary data may be
performed.
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