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Memory Maps and Registers
MVME2500 Installation and Use (6806800L01H)
95
5.5.15 PLD Shutdown and Reset Control and Reset Reason Register
The MVME2500 provides an 8-bit register to execute the shutdown and reset commands. The
board's reset reason is also included in this register.
board's reset reason is also included in this register.
Table 5-18 PLD Shutdown and Reset Control and Reset Reason Register
REG
PLD Shutdown and Reset Reason- 0xFFDF00FF
Bit
7
6
5
4
3
2
1
0
Field
AUTO_SH
DN_MASK
DN_MASK
Shutdown
Soft_RST
Clear_Cause
CPU_RESET
WD_TIME
OUT
OUT
LRSTO
Sft_RST
OPER
R/W
W
W
W
R
RESET
0
0
0
0
X
X
X
X
Field Description
AUTO_SHDN_MASK
Automatic Shutdown Mask
1 - Auto Shutdown Mask Enable
0 - Auto Shutdown Mask Disable
1 - Auto Shutdown Mask Enable
0 - Auto Shutdown Mask Disable
Note: Automatic shutdown is generated after 1 second whenever a power good signal de-
asserts.
asserts.
Shutdown
Board Shutdown Register
1 - Shutdown Enable
0 - Shutdown Disable
1 - Shutdown Enable
0 - Shutdown Disable
Note: If a board entered the shutdown state (by writing a '1' in this register), the chassis' power
needs to be cycled to power up the board again.
needs to be cycled to power up the board again.
Soft_RST
Board Soft Reset (self clearing)
1 - Execute soft reset
0 - No reset
1 - Execute soft reset
0 - No reset
Clear_Cause
Clear Reset Reason (self clearing)
1 - Clear Reason
0 - None
1 - Clear Reason
0 - None