wm8742 Wolfson Microelectronics plc, wm8742 Datasheet - Page 48

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

WM8742
Table 61 R8 Mode Control Register 2
Table 62 R9 Software Reset Control Register
Table 63 R32 Additional Control 1
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Mode Control 2
Software reset
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
Additional
Control 1
08h
R8
R32
09h
20h
R9
BITS
BITS
BITS
[1:0]
[3:2]
[7:0]
4
5
6
0
1
DSD_LEVEL
DITHER[1:0]
DSD_GAIN
DSD_NO_
DIFF[1:0]
NOTCH
SDOUT
RESET
DOUT
NAME
NAME
NAME
DEFAULT
DEFAULT
00000000
DEFAULT
10
00
0
0
0
0
1
DESCRIPTION
ALU dither mode select:
00 = dither off
01 = RPDF dither applied in ALU
10 = TPDF dither applied in ALU
11 = HPDF dither applied in ALU
Note: DITHER[1:0] applies only to the dither mode in the ALU.
00 = Stereo
10 = Stereo reverse (left and right channels swapped)
01 = Mono left – differential outputs
11 = Mono right – differential outputs.
Daisychaining Mode. Audio data output control:
0 = No audio data daisychaining
1 = Audio data output on pin 23
Daisychaining Mode. Control data output control:
0 = No control data daisychaining
1 = Control data output on pin 25
DSD Plus gain control:
0 = Low gain, 1.4Vrms differential output level
1 = High gain, 2.0Vrms differential output level
DESCRIPTION
Software reset. Writing to the register resets the entire chip, including
the register map.
DESCRIPTION
DSD Direct 8fs Notch Filter
0: Enable 8fs notch filter
1: Disable 8fs notch filter
DSD Direct Filter Gain
0: High Gain
1: Low Gain
VOUTLP is left channel.
VOUTLN is left channel inverted.
VOUTRP is left channel inverted.
VOUTRN is left channel.
VOUTLP is right channel inverted.
VOUTLN is right channel.
VOUTRP is right channel.
VOUTRN is right channel inverted.
PD, Rev 4.2,August 2009
Production Data
48