CL-PS7110 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CL-PS7110

Low-Power System-on-a-Chip

Cirrus Logic 

CL-PS7110

Low-Power System-on-a-Chip

Table 2-1. External Signal Functions (cont.)

Function

Signal

Name

Signal

Description

NPWRFL

Power

Management

BATOK

NEXTPWR

NBATCHG

NPOR

State Control

RUN

WAKEUP

NURESET

PCMCK

PCMSYNC

Codec Interface

PCMOUT

PCMIN

ADCCLK

Synchronous

Serial Interface

SMPLCK

NADCCS

ADCOUT

ADCIN

LEDDRV

PHDIN

IrDA and RS232

Interface

TxD

RxD

DSR

DCD

CTS

I Power fail input. Active-low de-glitched input to force system into the standby state.

I

Main battery OK input. Falling edge generates a FIQ, a low level in standby inhibits

system start up; de-glitched input.

I

External power sense. Must be driven low if the system is powered by external

source.

I New battery sense; driven low if battery voltage falls below the ‘no-battery’ threshold.

I Power on reset input. Active-low input completely resets the system.

O System active output; high when system is active or idle; low while in the standby

state.

I Wake up input signal. Rising edge forces system into operating state; active after a

power on reset.

I User reset input. Active-low input from user reset button.

O Codec clock output.

O Codec synchronization, pulse output.

O Codec serial data output.

I Codec serial data input.

O Serial ADC clock output.

O Serial ADC sample clock, can be disabled.

O Serial ADC active-low chip select and synchronization output.

O Serial ADC serial data output.

I Serial ADC serial data input.

O Infrared LED drive output.

I Photo diode input.

O RS232 Tx output.

I RS232 Rx input.

I RS232 DSR input.

I RS232 DCD input.

I RS232 CTS input.

May 1997

DATA BOOK v1.5

33

PIN INFORMATION

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