LTC2978 datasheet(33/64 Pages) LINER

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LTC2978

2978fa

operaTion

STATUS_MFR_SPECIFIC

TheSTATUS_MFR_SPECIFICcommandreturnsmanufac-

turer specific status flags. Bits marked FAULT = No are

intended to support polled handshaking; these are not

latched nor do they assert ALERTB. Bits marked Channel

= All can be read from any page. Bits marked FAULT = Yes

assert ALERTB low and are cleared by CLEAR_FAULTS.

STATUS_MFR_SPECIFIC Data Contents

BIT(S) SYMBOL

OPERATION

CHANNEL

FAULT

b[7]

Status_mfr_discharge

1 = A VOUT discharge fault occurred while attempting to enter the ON state

0 = No VOUT discharge fault has occurred

Current Page

Yes

b[6]

Status_mfr_fault1_in

This channel attempted to turn on while the FAULTBz1 pin was asserted low,

or this channel has shut down at least once in response to a FAULTBz1 pin

asserting low since the last CONTROLn pin toggle, OPERATION command

ON/OFF cycle or CLEAR_FAULTS command.

Current Page

Yes

b[5]

Status_mfr_fault0_in

This channel attempted to turn on while the FAULTBz0 pin was asserted low,

or this channel has shut down at least once in response to a FAULTBz0 pin

asserting low since the last CONTROLn pin toggle, OPERATION command

ON/OFF cycle or CLEAR_FAULTS command.

Current Page

Yes

b[4]

Status_mfr_servo_target_reached Servo target has been reached.

Current Page

b[3]

Status_mfr_dac_connected

DAC is connected and driving VDACP pin.

Current Page

b[2]

Status_mfr_dac_saturated

A previous servo operation terminated with maximum or minimum DAC

value.

Current Page

Yes

b[1]

Status_mfr_vinen_faulted_off

VIN_EN has been deasserted due to a VOUT fault.

All

b[0]

Status_mfr_watchdog_fault

1 = A watchdog fault has occurred.

0 = No watchdog fault has occurred.

All

Yes

LTC2978 Datasheet(PDF) 33 Page - Linear Technology

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