CL-PS7111-VC-A View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CL-PS7111-VC-A

Low-Power System-on-a-Chip

Cirrus Logic 

CL-PS7111

Low-Power System-on-a-Chip

Bit Description (cont.)

4 CSINT: Codec sound interrupt. This interrupt is active if the codec interface is enabled and the codec data FIFO has

reached half full or empty (depending on the interface direction). It is cleared by writing to the COEOI location.

3 MCINT: Media changed interrupt. This interrupt is active after a rising edge on the NMEDCHG input pin has been

detected, This input is deglitched with a 16-kHz clock and only generates an interrupt if it is active for longer than 62.5

ms. It is mapped to the FIQ input on the ARM710a microprocessor and is cleared by writing to the MCEOI location.

2 WEINT: Watchdog expired interrupt. This interrupt is active on a rising edge of the periodic 64-Hz tick interrupt clock if

the tick interrupt is still active, that is, if a tick interrupt has not been serviced for a complete tick period. It is cleared by

writing to the TEOI location.

NOTE: Watchdog timer is turned off during STANDBY modes. Watchdog cannot be accessed or cleared by software.

1 BLINT: Battery low interrupt. This interrupt is active if no external supply is present (NEXTPWR is high), and the bat-

tery-OK input pin BATOK is forced low. This interrupt is deglitched with a 16-kHz clock so it only generates an interrupt

if it is active for longer than 62.5 ms. It is mapped to the FIQ input on the ARM7 processor and is cleared by writing to

the BLEOI location.

0 EXTFIQ: External fast interrupt. This interrupt is active if the NEXTFIQ input pin is forced low and is mapped to the FIQ

input on the ARM7 processor.

September 1997

PRELIMINARY DATA BOOK v2.0

59

REGISTER DESCRIPTIONS

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