AV2722 Просмотр технического описания (PDF) - Unspecified

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производитель

AV2722

AUDIO CODEC WITH HEADPHONE DRIVER AND PROGRAMMABLE SAMPLE RATES

Unspecified 

PIN ASSIGNMENTS

AV2722 (Preliminary)

Pin No. Pin Name

Type

Description

1

VDD

Supply

Power supply for digital circuits

2

SC

Digital Input/Output DAC serial input data bit clock. It is input for slave mode and output

for master mode.

3

SDI

Digital Input

DAC serial input data. It can be in normal, left justified, i2s, or DSP

type

4

SFDA

Digital Input/Output DAC sample rate clock. It is input for slave mode and output for mas-

ter mode. For normal or left-justified type SDI data input, a high in

SFDA indicates left channel data, a low in SFDA indicates right chan-

nel data. For I2S type, a low in SFDA indicates left channel data, a

high in SFDA indicates right channel data.For DSP mode, a”sync”

pulse in SFDA is followed by two data words, left channel data is fol-

lowed by right channel data.

5

SDO

Digital Output

ADC serial output data. It can be in normal, left justified, i2s, or DSP

type.

6

SFAD

Digital Input/Output ADC sample rate clock. It is input for slave mode and output for mas-

ter mode. For normal or left-justified type SDO data output, a high in

SFAD indicates left channel data, a low in SFAD indicates right chan-

nel data. For I2S type, a low in SFAD indicates left channel data, a

high in SFAD indicates right channel data. For DSP mode, a”sync”

pulse in SFAD is followed by two data words, left channel data is fol-

lowed by right channel data.

7

HPVR

Analog Output

Voltage reference for CAPLESS headphone connection..

8

VDDH

Supply

Power supply for headphone circuits.

9

HOUTL Analog Output

Left channel headphone output.

10 HOUTR Analog Output

Right channel headphone output.

11

VSSH

Ground

Ground for headphone circuits.

12 AOUTL Analog Output

Left channel audio line output.

13 AOUTR Analog Output

Right channel audio line output.

14 VDDA

Supply

Power supply for analog circuits.

15 VSSA

Ground

Ground for analog circuits.

16 VSSA

Ground

Ground for analog circuits

17 VCM

Analog output

Analog circuits common mode reference.

18 MICBIAS Analog Output

Microphone bias.

19 AINR

Analog Input

Right channel line/microphone input.

3-29

January 22, 2004

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