WM8778EDS/R(2004) Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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Компоненты Описание

производитель

WM8778EDS/R
(Rev.:2004)

24-bit, 192kHz Stereo Codec

Wolfson Microelectronics plc 

WM8778

MASTER CLOCK TIMING

MCLK

tMCLKL

tMCLKH

tMCLKY

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Figure 1 Master Clock Timing Requirements

Test Conditions

AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, ADC/DACMCLK = 256fs unless otherwise

stated.

PARAMETER

SYMBOL

System Clock Timing Information

ADC/DACMCLK System clock

pulse width high

tMCLKH

ADC/DACMCLK System clock

pulse width low

tMCLKL

ADC/DACMCLK System clock

cycle time

tMCLKY

ADC/DACMCLK Duty cycle

Table 1 Master Clock Timing Requirements

TEST CONDITIONS

MIN

11

11

28

40:60

TYP

MAX

UNIT

ns

ns

ns

60:40

DIGITAL AUDIO INTERFACE – MASTER MODE

DACBCLK

ADCBCLK

ADCLRC

WM8778

CODEC DACLRC

DOUT

DIN

DVD

Controller

Figure 2 Audio Interface - Master Mode

w

PP Rev 1.7 June 2004

8

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