wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 14

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8941
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AUDIO INTERFACE TIMING – SLAVE MODE
Note:
BCLK period should always be greater than or equal to MCLK period.
Test Conditions
DVDD=1.8V, AVDD=SPKVDD=3.3V, DGND=AGND=SPKGND=0V, T
unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
FRAME 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
DVDD=1.8V, AVDD=SPKVDD=3.3V, DGND=AGND=SPKGND=0V, T
unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
FRAME set-up time to BCLK rising edge
FRAME hold time from BCLK rising edge
DACDAT hold time from BCLK rising edge
DACDAT set-up time to BCLK rising edge
ADCDAT propagation delay from BCLK falling edge
Figure 3 Digital Audio Data Timing – Slave Mode
SYMBOL
t
SYMBOL
t
t
t
t
LRSU
t
t
A
BCH
t
BCY
BCL
LRH
A
DH
DD
DS
=+25
=+25
t
t
t
t
DDA
DST
DHT
DL
o
o
C, Slave Mode, fs=48kHz, MCLK= 256fs, 24-bit data,
C, Slave Mode, fs=48kHz, MCLK=256fs, 24-bit data,
81.38
32.55
32.55
10
10
10
10
10
10
MIN
MIN
TYP
TYP
PD, Rev 4.0, August 2008
MAX
MAX
10
15
15
Production Data
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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