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SMH4814 Datasheet, PDF (36/44 Pages) Summit Microelectronics, Inc. – Dual Feed Active-ORing Programmable Hot Swap Controller
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CONFIGURATION REGISTERS (CONTINUED)
SMH4814
Preliminary Information
Register R0A – Over Current Level
Bits D[7:0] control the Over Current Level.
Register R0A
D7 D6 D5 D4 D3 D2 D1 D0
Action
Over Current Level = Current DAC Max Voltage
0
0
1
1
0
0
1
0
(R09[5:4]) * n/256, where n is the value in this
register. The default value (shown here) is 50mV
Register R0B – Quick-TripTM Over Current Level.
Bits D[7:0] control the Fast Response Over Current Level
Register R0B
D7 D6 D5 D4 D3 D2 D1 D0
1
0
0
1
1
1
0
0
Action
Fast Response Over Current Level (2’s complement)
= Current DAC Max Voltage * (256-n)/256.
The default value (shown here) is 100mV.
Register R0C – PUPX Sequence Time Slot
Bits D[7:6] control the PUPD Time Slot. Bits D[5:4] control the PUPC Time Slot. Bits D[3:2] control the PUPB Time
Slot. Bits D[1:0] control the PUPA Time Slot.
Register R0C
D7 D6 D5 D4 D3 D2 D1 D0
Action
0
0
-
-
-
-
-
- PUPD Time Slot = 0
0
1
-
-
-
-
-
- PUPD Time Slot = 1
1
0
-
-
-
-
-
- PUPD Time Slot = 2
1
1
-
-
-
-
-
- PUPD Time Slot = 3
-
-
0
0
-
-
-
- PUPC Time Slot = 0
-
-
0
1
-
-
-
- PUPC Time Slot = 1
-
-
1
0
-
-
-
- PUPC Time Slot = 2
-
-
1
1
-
-
-
- PUPC Time Slot = 3
-
-
-
-
0
0
-
- PUPB Time Slot = 0
-
-
-
-
0
1
-
- PUPB Time Slot = 1
-
-
-
-
1
0
-
- PUPB Time Slot = 2
-
-
-
-
1
1
-
- PUPB Time Slot = 3
-
-
-
-
-
-
0
0 PUPA Time Slot = 0
-
-
-
-
-
-
0
1 PUPA Time Slot = 1
-
-
-
-
-
-
1
0 PUPA Time Slot = 2
-
-
-
-
-
-
1
1 PUPA Time Slot = 3
Summit Microelectronics, Inc
2080 2.0 07/21/05
36
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