wm8775 Wolfson Microelectronics plc, wm8775 Datasheet - Page 9

• Manufacturer Part Number: wm8775
• Description: 24-bit, 96khz Adc With 4 Channel I/p Multiplexer
• 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 should be synchronous with MCLK, although the WM8775 interface is tolerant of phase variations or jitter on
these signals.
w
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, T
stated.
PARAMETER
Audio Data Input Timing Information
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
ADCLRC set-up time to
BCLK rising edge
ADCLRC hold time from
BCLK rising edge
DOUT propagation delay
from BCLK falling edge
WM8775
ADCLRC
ADC
DOUT
BCLK
ADCLRC
DOUT
BCLK
SYMBOL
t
t
t
t
t
LRSU
BCH
t
BCY
BCL
LRH
DD
t
BCH
t
BCY
t
DD
TEST CONDITIONS
Controller
t
DVD
A
BCL
= +25
o
C, Slave Mode, fs = 48kHz, MCLK = 256fs unless otherwise
t
LRH
MIN
50
20
20
10
10
t
0
LRSU
TYP
PD, Rev 4.4, October 2008
MAX
10
WM8775
UNIT
ns
ns
ns
ns
ns
ns
9