WM8741
Production Data
MASTER CLOCK TIMING
Figure 1 Master Clock Timing Requirements
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25oC
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Master Clock Timing Information
MCLK Master clock pulse width high
MCLK Master clock pulse width low
MCLK Master clock cycle time
MCLK Duty cycle
tMCLKH
tMCLKL
tMCLKY
10
10
ns
ns
ns
27
40:60
60:40
Table 1 MCLK Timing Requirements
PCM DIGITAL AUDIO INTERFACE TIMINGS
Figure 2 Digital Audio Data Timing
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Audio Data Input Timing Information
BCLK cycle time
tBCY
tBCH
tBCL
40
16
16
8
ns
ns
ns
ns
BCLK pulse width high
BCLK pulse width low
LRCLK set-up time to BCLK
rising edge
tLRSU
LRCLK hold time from
BCLK rising edge
tLRH
tDS
8
8
8
ns
ns
ns
DIN set-up time to BCLK
rising edge
DIN hold time from BCLK
rising edge
tDH
Table 2 Digital Audio Interface Timing Requirements
PD, Rev 4.2, October 2009
12
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
