WM8731 Wolfson Microelectronics Ltd., WM8731 Datasheet - Page 15

• Manufacturer Part Number: WM8731
• Description: WM8731 : Low Power Audio Codec With Integrated Headphone Driver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8731
DIGITAL AUDIO INTERFACE – SLAVE MODE
Figure 5 Slave Mode Connection
Figure 6 Digital Audio Data Timing – Slave Mode
Test Conditions
AVDD, HPVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, T
256fs unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
DACLRC/ADCLRC set-up
time to BCLK rising edge
DACLRC/ADCLRC hold
time from BCLK rising edge
DACDAT set-up time to
BCLK rising edge
DACDAT hold time from
BCLK rising edge
Note: The ADC and DAC can run at different rates
DACLRC/
ADCDAT
ADCLRC
DACDAT
WM8731
CODEC
BCLK
ADCLRC
ADCDAT
DACLRC
DACDAT
BCLK
SYMBOL
t
t
t
t
t
LRSU
BCH
t
t
BCY
BCL
LRH
DS
DH
t
BCH
t
BCY
t
DD
TEST CONDITIONS
t
t
BCL
DS
t
LRH
ENCODER/
DECODER
t
DH
DSP
A
= +25
t
o
MIN
LRSU
50
20
20
10
10
10
10
C, Slave Mode, fs = 48kHz, XTI/MCLK =
TYP
AI Rev 2.3 August 2001
Advanced Information
MAX
UNIT
ns
ns
ns
ns
ns
ns
ns
15