WM8774IFT datasheet(10/42 Pages) WOLFSON

tên linh kiện	WM8774IFT

Giải thích chi tiết về linh kiện	24 - bit, 192kHz 8 - Channel Input Stereo Codec

PDF	42 Pages

Scroll/Zoom	100%

nhà sản xuất	WOLFSON [Wolfson Microelectronics plc]

Trang chủ	http://www.wolfsonmicro.com

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10 / 42 page

WM8774

Product Preview

PP Rev 1.0 June 2002

DIGITAL AUDIO INTERFACE – SLAVE MODE

BCLK

DOUT

ADCLRC

DIN

DACLRC

WM8774

CODEC

DVD

Controller

Figure 4 Audio Interface – Slave Mode

BCLK

DACLRC/

ADCLRC

BCH

BCL

BCY

DIN

DOUT

LRSU

LRH

Figure 5 Digital Audio Data Timing – Slave Mode

Test Conditions

AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25

oC, Slave Mode, fs = 48kHz, MCLK = 256fs unless otherwise

stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Audio Data Input Timing Information

BCLK cycle time

tBCY

BCLK pulse width high

tBCH

BCLK pulse width low

tBCL

DACLRC/ADCLRC set-up

time to BCLK rising edge

tLRSU

DACLRC/ADCLRC hold

time from BCLK rising edge

tLRH

DIN set-up time to BCLK

rising edge

tDS

DIN hold time from BCLK

rising edge

tDH

DOUT propagation delay

from BCLK falling edge

tDD

Table 3 Digital Audio Data Timing – Slave Mode

Note:

ADCLRC and DACLRC should be synchronous with MCLK, although the WM8774 interface is tolerant of phase

variations or jitter on these signals.

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