92hd75b Integrated Device Technology, 92hd75b Datasheet - Page 37

• Manufacturer Part Number: 92hd75b
• Description: Four Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
92HD75B
4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
5.2.
6-port 48 pad Widget Diagram
Azalia
Link
NID = 12h
NID = 13h
ADC0
ADC1
NID = 21h
NID = 23h
NID = 22h
SPDIF
SPDIF
OUT0
OUT1
VSW0
NID = 10h
NID = 11h
DAC0
DAC1
NID = 26h
PC_BEEP
Digital
0 to 22.5dB
0 to 22.5dB
1.5dB step
1.5dB step
-95.25 to 0dB
-95.25 to 0dB
0.75dB step
0.75dB step
Figure 14. 92HD75B 6-port 48 pad Widget Diagram
ADC0 MUX
ADC1 MUX
NID = 1Ch
NID = 1Dh
ADC0
ADC1
MUX
MUX
Inport0 mux
Inport1 mux
ADC0 MUX
ADC1 MUX
ADC0 MUX
ADC1 MUX
DMIC0
DMIC1
DMIC0
DMIC1
VOLUME KNOB
Mixer
Mixer
NID = 27h
NID = 24h
NID = 25h
Dig0Mux
Dig2Mux
10/20/30/40
10/20/30/40
Mixer
Σ
NID = 1Ah
NID = 1Bh
INPORT0
INPORT1
37
MUX
MUX
Mute
Mute
Mute
Mute
Mute
Volume
Volume
Volume
Volume
Volume
NID = 17h
B
C
E
B
C
E
-34.5 to +12dB in 1.5dB steps
NID = 15h
OutMux
Mono
Inport0 mux
Inport1 mux
DAC0
DAC1
NID = 16h
OutMix
10/20/30/40
10/20/30/40
Mono
MIXER
MIXER
MIXER
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
92HD75B
NID = 1Eh
NID = 0Ah
NID = 0Bh
NID = 0Ch
NID = 0Dh
NID = 0Eh
NID = 0Fh
NID = 18h
NID = 19h
NID = 1Fh
NID = 20h
Dig0Pin
Dig1Pin
Dig2Pin
Port A
Port B
Port C
Port D
Port E
Port F
DMIC0
DMIC1
NID = 14h
PCBeep/
BIAS
BIAS
BIAS
HP
Mono
PC AUDIO
V 1.0 01-09