WM8728 datasheet(4/31 Pages) ETC2

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WM8728

Production Data

PD, Rev 4.6, August 2008

PIN DESCRIPTION

NAME

TYPE

DESCRIPTION

LRCIN

Digital Input

DAC Sample Rate Clock Input: PCM Input Mode

DIN

Digital Input

Serial Audio Data Input: PCM Input Mode

BCKIN

Digital Input

Audio Data Bit Clock Input

MCLK

Digital Input

Master Clock Input

ZERO

Digital Output (Open drain)

Infinite ZERO Detect Flag (L = IZD detected, H = IZD not detected).

DGND

Supply

Digital Ground Supply

DVDD

Supply

Digital Positive Supply

VOUTR

Analogue Output

Right Channel DAC Output

AGND

Supply

Analogue Ground Supply

AVDD

Supply

Analogue Positive Supply

VOUTL

Analogue Output

Left Channel DAC Output

VMID

Analogue Output

Mid Rail Decoupling Point

VREFN

Supply

DAC Negative Reference – normally AGND, must not be below AGND

VREFP

Supply

DAC Positive Reference – normally AVDD, must not be above AVDD

CSBIWL

Digital Input

(pull-up)

Software Mode: 3-Wire Serial Control Chip Select

Hardware Mode: Input Word Length

MODE

Digital Input (pull-down)

Control Mode Selection (L = Hardware, H = Software)

MUTEB

Digital Bi-directional

Mute Control (L = Mute on, H = Mute off, Z = Automute Enabled)

SDIDEM

Digital Bi-directional

Software Mode: 3 or 2-Wire Serial Control Data Input:

Hardware Mode: De-Emphasis Select

SCK

Digital Input (pull-down)

Software Mode: 3 or 2-Wire Serial Control Clock Input

LATI2S

Digital Input

(pull-up)

Software Mode 3-Wire Serial Control Load Input

Hardware Mode: Input Data Format Selection

Note:

Digital input pins have Schmitt trigger input buffers.

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