WM8522 Wolfson Microelectronics plc, WM8522 Datasheet - Page 27

• Manufacturer Part Number: WM8522
• Description: 24-bit, 192khz 6-channel Dac With 1.7vrms Line Driver
• Manufacturer: Wolfson Microelectronics plc

Production Data
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MASTER POWERDOWN
This control bit powers down the references for the whole chip. Therefore for complete powerdown,
all DACs should be powered down first before setting this bit.
MASTER MODE SELECT
Control bit MS selects between audio interface Master and Slave Modes. In Master mode LRCLK
and BCLK are outputs and are generated by the WM8522. In Slave mode LRCLK and BCLK are
inputs to WM8522.
MASTER MODE LRCLK FREQUENCY SELECT
In Master mode the WM8522 generates LRCLK and BCLK. These clocks are derived from the
master clock and the ratio of MCLK to LRCLK is set by RATE.
Table 15 DAC Disable Control
REGISTER ADDRESS
REGISTER ADDRESS
REGISTER ADDRESS
Interface Control
Interface Control
Interface Control
DACPD [2:0]
0001010
0001010
0001010
000
001
010
011
100
101
110
111
DAC CHANNEL 1
BIT
BIT
BIT
8:6
4
5
DISABLE
DISABLE
DISABLE
DISABLE
Active
Active
Active
Active
PWRDNALL
RATE [2:0]
LABEL
LABEL
LABEL
MS
DEFAULT
DEFAULT
DEFAULT
010
DAC CHANNEL 2
0
0
DISABLE
DISABLE
DISABLE
DISABLE
Active
Active
Active
Active
Master Power Down Bit:
DAC Audio Interface Master/Slave
Mode Select:
Master Mode
MCLK:LRCLK Ratio Select:
0: Not powered down
1: Powered down
0: Slave mode
1: Master mode
000: 128fs
001: 192fs
010: 256fs
011: 384fs
100: 512fs
101: 768fs
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, Rev 4.1, July 2009
DAC CHANNEL 3
DISABLE
DISABLE
DISABLE
DISABLE
Active
Active
Active
Active
WM8522
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