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FN9192.2

December 4, 2008

oovp_limit [5:0]

Output overvoltage protect threshold. Tracking VID over

voltage threshold.

R/W

0.0mV

787.5mV

12.5mV

fault1_mask[12:0]

fault2_mask[12:0]

FAULT1, FAULT2 pin output masks. Inputs are enabled for

reporting when set to logic 1. If multiple inputs are selected,

output is “OR” of selected input signals.

15 = Current ADC over range

14 = Load current monitor

13 = Average total current fault

12 = NVM fault

11 = Internal bus fault

10 = IUVP

9 = OUVP

8 = OOVP

7 = VR_HOT alert

6 = VR_FAN alert

5 = External (thermistor) temp alert

4 = External (thermistor) temp shutdown

3 = Internal (PTAT) temp alert

2 = Internal (PTAT) temp shutdown

1 = MHz controller fault

0 = Calibration fault

shutdown_mask[10:0]

Shutdown control mask. Inputs are enabled for shutdown

when set to logic 1. If multiple inputs are selected, output is

“OR” of selected input signals.

9 = Total current fault during soft-start

7 = Individual phase current fault during soft-start

6 = Current ADC over range fault

5 = IUVP

4 = OUVP

3 = OOVP

2 = Thermistor temp shutdown

1 = PTAT temp shutdown 0 = Calibration fault

R/W

ch_mask[6:1]

Channel mask. Selects number of active phases. Phases

must be selected in sequential order.

000011 = 2-phase operation

000111 = 3-phase operation

001111 = 4-phase operation

011111 = 5-phase operation

111111 = 6-phase operation

R/W

TABLE 4. KEY REGISTERS (Continued)

REGISTER

DESCRIPTION

FORMAT

RANGE

RESOLUTION

MIN

MAX

ISL6595