CS5535 datasheet(500/555 Pages) NSC

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PMC Register Descriptions (Continued)

15:13

RSVD

Reserved. Reads return 0; writes are don’t care.

BADPACK_

RST_FLAG

Bad Packet Reset Flag. If set, indicates that the last Standby state was entered from

bad packet type reset. Returns to Working state when Abnormal Work Delay expires.

(Note 1)

GLCP_SFT_

RST_FLAG

GLCP Soft Reset Flag. If set, indicates that the last Standby state was entered from a

GLCP soft reset. Returns to Working State when Abnormal Work Delay expires. (Note

WATCHDOG_

RST_FLAG

Watchdog Reset Flag. If set, indicates that the last Standby state was entered from a

Watchdog reset. Returns to Working state when Abnormal Work Delay expires. (Note

SHTDWN_RST_

FLAG

Shutdown Reset Flag. If set, indicates that the last Standby state was entered from

shutdown reset. Returns to Working state when Abnormal Work Delay expires. (Note 1)

8SFT_RST_

FLAG

Soft Reset Flag. If set, indicates that the last Standby state was entered from a soft-

ware reset. Returns to Working state when Abnormal Work Delay expires. (Note 1)

RSVD

Reserved. Reads return 0; writes are don’t care.

HRD_RST_FLAG

Hard Reset Flag. If set, indicates that the last Standby state was entered due to the

unexpected assertion of Working reset. Returns to Working state when hard reset is

de-asserted and Abnormal Work Delay expires. (Note 1)

LOWBAT_FLAG

Low Battery Flag. If set, indicates that the last Standby state was entered due to a low

power shutdown. Returns to Working state due to default wakeup. (Note 1)

4THRM_FLAG

Thermal Flag. If set, indicates that the last Standby state was entered due to a thermal

shutdown. Returns to Working state due to default wakeup. (Note 1)

3PWRBTN_FLAG

Power Button Flag. If set, indicates that the last Standby state was entered via a fail-

safe power off sequence. User held down the power button. PM1_CNT was not used.

Returns to Working state due to default wakeup. (Note 1)

LVD_FLAG

Working Power Fail. If set, indicates that the last Standby state was entered via an

unexpected loss of Working power as detected with the on-chip Low Voltage Detect cir-

cuit. Returns to Working state due to default wakeup. (Note 1)

1NORM_FLAG

Normal Flag. If set, indicates that the last Standby state was entered under program

control through use of PM1_CNT. Returns to Working state due to programmed

wakeup. See PM1_STS (ACPI I/O Offset 00h) and PM_GPE0_STS (ACPI I/O Offset

18h) for wakeup source. (Note 1)

OFF_FLAG

Off Flag (No Previous). If set, indicates that the circuits of the Standby power domain

have been reset. Entry was from the Power Off state. Returns to Working state due to

default wakeup. (Note 1)

Note 1. Standby Status. These bits are cleared each time the Power Management Logic enters the Standby state except

for the bit that caused the entry. Write 1 to the bit to clear the bit; writing 0 has no effect. Bits [12:8,6] do not result

in WORKING or WORK_AUX being de-asserted.

PM_SSC Bit Descriptions (Continued)

Bit

Name

Description

CS5535 Datasheet(PDF) 500 Page - National Semiconductor (TI)

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