wm8770 Wolfson Microelectronics plc, wm8770 Datasheet - Page 11

• Manufacturer Part Number: wm8770
• Description: 24-bit, 192khz 8-channel Codec With Volume Control
• Manufacturer: Wolfson Microelectronics plc

Production Data
DIGITAL AUDIO INTERFACE – SLAVE MODE
Figure 4 Audio Interface – Slave Mode
Figure 5 Digital Audio Data Timing – Slave Mode
Table 3 Digital Audio Data Timing – Slave Mode
Note: ADCLRC and DACLRC should be synchronous with MCLK, although the WM8770 interface is tolerant of phase
variations or jitter on these signals.
w
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, T
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
DIN1/2/3/4 set-up time to
BCLK rising edge
DIN1/2/3/4 hold time from
BCLK rising edge
DOUT propagation delay
from BCLK falling edge
DIN1/2/3/4
WM8770
DACLRC/
CODEC
ADCLRC
DOUT
BCLK
DIN1/2/3/4
ADCLRC
DACLRC
DOUT
BCLK
SYMBOL
4
t
t
t
t
t
LRSU
BCH
t
t
t
BCY
BCL
LRH
DS
DH
DD
t
BCH
t
BCY
ENCODER/
DECODER
t
DD
DSP
TEST CONDITIONS
t
BCL
t
DS
A
= +25
o
C, fs = 48kHz, MCLK = 256fs, ADC/DAC in Slave Mode unless
t
LRH
t
DH
t
LRSU
MIN
50
20
20
10
10
10
10
0
TYP
PD Rev 4.2 March 2008
MAX
10
WM8770
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
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