SMH4814 Datasheet, PDF (39/44 Pages) Summit Microelectronics, Inc. – Dual Feed Active-ORing Programmable Hot Swap Controller

CONFIGURATION REGISTERS (CONTINUED)
SMH4814
Preliminary Information
Register R10 – Power Down or Forced Shutdown, Fault or no Fault
.
Register R10
D7 D6 D5 D4 D3 D2 D1 D0
Action
0
0
-
-
-
-
-
- Shorted FET Detection disabled
0
1
-
-
-
-
-
- Shorted FET sets fault
1
0
-
-
-
-
-
- Shorted FET causes power down
1
1
-
-
-
-
-
- Shorted FET causes forced shutdown
-
-
0
0
-
-
-
- Blown Fuse Detection disabled
-
-
0
1
-
-
-
- Blown sets fault
-
-
1
0
-
-
-
- Blown causes power down
-
-
1
1
-
-
-
- Blown causes forced shutdown
-
-
-
-
0
-
-
-
Enable Fuse Check High (works in conjunction with
R10 D[5:4])
-
-
-
-
1
-
-
-
Disable Fuse Check High (works in conjunction with
R10 D[5:4])
-
-
-
-
-
0
-
- Disable Periodic Fuse Checking
-
-
-
-
-
1
-
- Enable Periodic Fuse Checking
-
-
-
-
-
-
0
0
Short Circuit Level = 256V (defines the amount
Drain Sense has to move during Short Detect)
-
-
-
-
-
-
0
1
Short Circuit Level = 512V (defines the amount
Drain Sense has to move during Short Detect)
-
-
-
-
-
-
1
0
Short Circuit Level = 1.024V (defines the amount
Drain Sense has to move during Short Detect)
-
-
-
-
-
-
1
1
Short Circuit Level = 2.048V (defines the amount
Drain Sense has to move during Short Detect)
Register R11 – PUP polarity, Power-up command.
.
Register R11
D7 D6 D5 D4 D3 D2 D1 D0
0
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
0
0
0
-
-
-
-
-
-
-
-
0
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
0
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
0
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
0
-
-
-
-
-
-
-
1
Action
Command Not Required for Power-Up
Command is Required for Power-Up
Power Up/Down Configuration
PUP_D polarity = active low
PUP_D polarity = active high
PUP_C polarity = active low
PUP_C polarity = active high
PUP_B polarity = active low
PUP_B polarity = active high
PUP_A polarity = active low
PUP_A polarity = active high
Summit Microelectronics, Inc
2080 2.0 07/21/05
39