WM8976 Wolfson Microelectronics Ltd., WM8976 Datasheet - Page 16

• Manufacturer Part Number: WM8976
• Description: The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

WM8976
AUDIO INTERFACE TIMING – SLAVE MODE
Note:
BCLK period should always be greater than or equal to MCLK period.
w
Test Conditions
DCVDD=1.8V,
MCLK=256fs, 24-bit data, unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
LRC propagation delay from BCLK falling edge
ADCDAT propagation delay from BCLK falling edge
DACDAT setup time to BCLK rising edge
DACDAT hold time from BCLK rising edge
Test Conditions
DCVDD=1.8V, DBVDD=AVDD=SPKVDD=3.3V, DGND=AGND=SPKGND=0V, T
MCLK= 256fs, 24-bit data, unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
LRC set-up time to BCLK rising edge
LRC hold time from BCLK rising edge
DACDAT hold time from BCLK rising edge
DACDAT setup time to BCLK rising edge
ADCDAT propagation delay from BCLK falling edge
DBVDD=AVDD=SPKVDD=3.3V,
Figure 4 Digital Audio Data Timing – Slave Mode
DGND=AGND=SPKGND=0V,
SYMBOL
SYMBOL
t
t
t
t
LRSU
t
BCH
t
t
BCY
BCL
LRH
t
DH
DD
Ds
t
t
t
t
DDA
DST
DHT
DL
A
=+25
MIN
MIN
T
10
10
50
20
20
10
10
10
10
A
=+25
o
C, Slave Mode, fs=48kHz,
o
C,
TYP
TYP
Master
PP Rev 3.0 April 2006
Mode,
MAX
MAX
10
10
10
Pre-Production
fs=48kHz,
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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