WM8523GEDT WOLFSON [Wolfson Microelectronics plc], WM8523GEDT Datasheet - Page 31

• Manufacturer Part Number: WM8523GEDT
• Description: 24-bit 192kHz Stereo DAC with 2Vrms Ground Referenced Line Output
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Production Data
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MUTE
A digital mute can be applied to left and right channels independently.
Table 18 DAC Mute Control
The DAC mute function in software mode is controlled by the register settings DAC_VOL_UP_RAMP,
DAC_VOL_DOWN_RAMP and DAC_ZCEN as described in Table 17.
DIGITAL MONOMIX CONTROL
The DAC can be set to output a range of mono and stereo options using DAC_OP_MUX[1:0].
DE-EMPHASIS
A digital de-emphasis filter may be applied to the DAC output when the sampling frequency is 44.1kHz.
Operation at 48kHz and 32kHz is also possible, but with an increase in the error from the ideal response.
Details of the de-emphasis filter characteristic for 32kHz, 44.1kHz and 48kHz can be seen in Figure 31 to
Figure 36.
ZERO DETECT
The infinite zero detect allows the user to select the number of zero samples received before the ZFLAG
pin is asserted high, as described in Table 21.
Table 19 Digital Monomix Control
Table 20 De-emphasis Control
Table 21 Zero Detect Control
ZERO_DETECT
DAC_CTRL3
DAC_CTRL3
AIF_CTRL2
AIF_CTRL1
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
REGISTER
ADDRESS
05h
05h
04h
03h
R5
R5
R4
R3
08h
R8
BIT
BIT
BIT
7:6
2
3
6
BIT
0
DAC_OP_
MUX[1:0]
_DEEMP
DACR_
LABEL
DACL_
MUTE
MUTE
LABEL
LABEL
COUNT
LABEL
DAC
ZD_
DEFAULT
DEFAULT
DEFAULT
DEFAULT
00
0
0
0
0
Left DAC Mute
0 = Normal operation
1 = Mute
Right DAC Mute
0 = Normal operation
1 = Mute
DAC Digital Monomix
00 = Stereo (Normal Operation)
01 = Mono (Left data to DACR)
10 = Mono (Right data to DACL)
11 = Digital Monomix, (L+R)/2
DAC De-emphasis
0 = No de-emphasis
1 = Apply de-emphasis
Zero Detect Count Control
0 = 1024
1 = 2048
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, Rev 4.1, August 2011
WM8523
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