WM8746 Wolfson Microelectronics plc, WM8746 Datasheet - Page 8

• Manufacturer Part Number: WM8746
• Description: 24-bit, 192khz 6-channel Dac With Volume Control
• Manufacturer: Wolfson Microelectronics plc

WM8746
MASTER CLOCK TIMING
Figure 1 Master Clock Timing Requirements
Table 1 Master Clock Timing Requirements
DIGITAL AUDIO INTERFACE TIMING
Figure 2 PCM Digital Audio Data Timing
Table 2 PCM Digital Audio Timing
w
Test Conditions
AVDD = DVDD = 5V, AGND = GR = DGND = 0V, T
PARAMETER
System Clock Timing Information
SCKI System clock pulse width high
SCKI System clock pulse width low
SCKI System clock cycle time
SCKI Duty cycle
Test Conditions
AVDD = DVDD = 5V, AGND = GR = DGND = 0V, T
PARAMETER
Audio Data Input Timing Information
BCKIN cycle time
BCKIN pulse width high
BCKIN pulse width low
LRCIN set-up time to
BCKIN rising edge
LRCIN hold time from
BCKIN rising edge
DIN0/1/2 set-up time to
BCKIN rising edge
DIN0/1/2 hold time from
BCKIN rising edge
DACLRC
DIN0/1/2
SCKI
BCLK
SYMBOL
t
t
t
BCH
t
t
BCY
BCL
t
t
DS
DH
SYMBOL
LB
BL
t
t
t
t
SCKIH
SCKIY
BCH
SCKIL
t
SCKIL
t
BCY
t
SCKIY
A
A
TEST CONDITIONS
= +25
= +25
TEST CONDITIONS
t
t
BCL
t
DS
SCKIH
o
o
C, fs = 48kHz, SCKI = 256fs unless otherwise stated.
C, fs = 48kHz, SCKI = 256fs unless otherwise stated.
t
LRH
t
DH
40:60
MIN
MIN
13
13
26
40
16
16
t
8
8
8
8
LRSU
TYP
TYP
PD, October 2008, Rev 4.2
60:40
MAX
MAX
Production Data
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
8