XWM8721EDS Ver la hoja de datos (PDF) - Wolfson Microelectronics plc

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componentes Descripción

Fabricante

XWM8721EDS

Internet Audio DAC with Integrated Headphone Driver

Wolfson Microelectronics plc 

Production Data

DIGITAL AUDIO INTERFACE – SLAVE MODE

tBCH

tBCL

BCLK

tBCY

DACLRC

DACDAT

tDS

tLRH

tLRSU

tDH

WM8721 / WM8721L

Figure 3 Digital Audio Data Timing – Slave Mode

Test Conditions

AVDD, HPVDD, DVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25oC, slave mode, fs = 48kHz, MCLK = 256fs

unless otherwise stated.

PARAMETER

SYMBOL

Audio Data Input Timing Information

BCLK cycle time

tBCY

BCLK pulse width high

tBCH

BCLK pulse width low

tBCL

DACLRC set-up time to

BCLK rising edge

tLRSU

DACLRC hold time from

tLRH

BCLK rising edge

DACDAT set-up time to

tDS

BCLK rising edge

DACDAT hold time from

tDH

BCLK rising edge

TEST CONDITIONS

MIN

TYP

MAX

UNIT

50

ns

20

ns

20

ns

10

ns

10

ns

10

ns

10

ns

MPU INTERFACE TIMING

CSB

SCLK

tCSL

tSCY

tSCH

tSCL

SDIN

tDSU

tDHO

Figure 4 Program Register Input Timing - 3-Wire MPU Interface Timing

w

tCSH

tSCS

tCSS

LSB

PD Rev 4.0 November 2004

9

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