wm8742 Wolfson Microelectronics plc, wm8742 Datasheet - Page 12

• Manufacturer Part Number: wm8742
• Description: 24-bit 192khz Dac With Advanced Digital Filtering
• Manufacturer: Wolfson Microelectronics plc

WM8742
MASTER CLOCK TIMING
Figure 1 Master Clock Timing Requirements
Table 1 MCLK Timing Requirements
PCM DIGITAL AUDIO INTERFACE TIMINGS
Figure 2 Digital Audio Data Timing
Table 2 Digital Audio Interface Timing Requirements
w
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, T
PARAMETER
Master Clock Timing Information
MCLK Master clock pulse width high
MCLK Master clock pulse width low
MCLK Master clock cycle time
MCLK Duty cycle
Test Conditions
AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, T
PARAMETER
Audio Data Input Timing Information
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
LRCLK set-up time to BCLK
rising edge
LRCLK hold time from
BCLK rising edge
DIN set-up time to BCLK
rising edge
DIN hold time from BCLK
rising edge
SYMBOL
t
t
t
t
t
LRSU
t
t
BCY
BCH
BCL
LRH
DS
DH
SYMBOL
t
t
t
MCLKH
MCLKL
MCLKY
TEST CONDITIONS
A
A
= +25
= +25
TEST CONDITIONS
o
o
C
C, fs = 48kHz, MCLK = 256fs unless otherwise stated.
40:60
MIN
MIN
10
10
27
40
16
16
8
8
8
8
TYP
TYP
PD, Rev 4.2,August 2009
60:40
MAX
MAX
Production Data
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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