Cirrus-logic CS4397 User Manual download pdf (Page 18)

CS4397

18 DS333F1

4.0 PIN DESCRIPTION - PCM MODE

Reset - RST

Pin 1, Input

Function:

The device enters a low power mode and all internal state machines registers are reset when low. When

high, the device will be in a normal operation mode .

Digital Ground - DGND

Pins 6 and 9, Inputs

Function:

Digital ground reference.

Digital Power - VD

Pins 7 and 8, Input

Function:

Digital power supply. Typically 5.0 to 3.0 VDC.

Master Clock - MCLK

Pin 10, Input

Function:

The master clock frequency must be either 256x, 384x, 512x or 768x the input sample rate in Single

Speed Mode; either 128x, 192x 256x or 384x the input sample rate in Double Speed Mode; or 64x, 96x

128x or 192x the input sample rate in Quad Speed Mode. Tables 4-6 illustrate the standard audio sample

rates and the required master clock frequencies.

RST

DESCRIPTION

Enabled

Normal operation mode

Reset RST

VREF Voltage Reference

See Description M4(AD0/CS

) FILT+ Reference Filter

See Description M3(AD1/CDIN) FILT- Reference Ground

See Description M2(SCL/CCLK) CMOUT Common ModeS Voltage

See Description M0(SDA/CDOUT) AOUTL- Differential Output

Digital Ground DGND AOUTL+ Differential Output

Digital Power VD VA Analog Power

Digital Power VD AGND Analog Ground

Digital Ground DGND AOUTR+ Differential Output

Master Clock MCLK AOUTR- Differential Output

Serial Clock SCLK AGND Analog Ground

Left/Right Clock LRCK MUTEC

Mute Control

Serial Data SDATA C/H

Control port/Hardware select

See Description M1 MUTE

Soft Mute

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 33 34

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Cirrus-logic CS4397 User Manual Page 18

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