WM8991 datasheet(31/174 Pages) WOLFSON

Part #	WM8991

Description	Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver

PDF	174 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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31 / 174 page

Pre-Production

WM8991

PP, May 2008, Rev 3.1

AUDIO INTERFACE TIMING – SLAVE MODE

Figure 6 Digital Audio Data Timing – Slave Mode

Test Conditions

DCVDD=1.8V, DBVDD=AVDD=3.3, SPKVDD=5V, DGND=AGND=SPKGND=0V, TA=+25

oC, Slave Mode, fs=48kHz,

MCLK=256fs, 24-bit data, unless otherwise stated.

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Audio Data Timing Information

BCLK (or BCLK2) cycle time

tBCY

BCLK (or BCLK2) pulse width high

tBCH

BCLK (or BCLK2) pulse width low

tBCL

ADCLRC/ DACLRC (or DACLRC2) set-up time to BCLK

(or BCLK2) rising edge

tLRSU

ADCLRC/ DACLRC (or DACLRC2) hold time from BCLK

(or BCLK2) rising edge

tLRH

DACDAT (or DACDAT2) hold time from BCLK (or BCLK2)

rising edge

tDH

ADCDAT propagation delay from BCLK falling edge

tDD

DACDAT (or DACDAT2) set-up time to BCLK (or BCLK2)

rising edge

tDS

ADCLRC to ADCLRCB delay

tDLRCB

Note:

BCLK (or BCLK2) period should always be greater than or equal to MCLK (or MCLK2) period.

WM8991 Datasheet(PDF) 31 Page - Wolfson Microelectronics plc