92hd81 Integrated Device Technology, 92hd81 Datasheet - Page 48

• Manufacturer Part Number: 92hd81
• Description: Single Chip Pc Audio System
• Manufacturer: Integrated Device Technology

SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
4. FUNCTIONAL BLOCK DIAGRAMS
92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
MixerOutVol
Mixer
Stream &
Stream &
Stream &
Stream &
Stream &
Stream &
Channel
Channel
Channel
Channel
Channel
Channel
mute
Select
Select
Select
Select
Select
Select
-46.5 to 0 dB
In 1.5 dB steps
Vol
ADC0
ADC1
ADC0
ADC1
ADC0
ADC1
Σ
vol
vol
mute
mute
Digital
Digital
Mute
Mute
0 to +22.5 dB
In 1.5 dB steps
0 to +22.5 dB
In 1.5 dB steps
SPDIF OUT
SPDIF OUT
PCM to
PCM to
Gain
Gain
mute
mute
mute
mute
mute
mute
-34.5 to +12 dB
In 1.5 dB steps
Figure 10. Functional Block Diagram
DAC 0
DAC 1
vol
vol
vol
vol
vol
vol
vol
vol
SPDIF OUT1 (shared)
SPDIF OUT0
Pin 46
Pin 48
DAC0
DAC1
Port A
Port C
Port E
Port F
DAC0
DAC1
DMIC0
DMIC1
DMIC0
DMIC1
Port C
Port E
Port F
Port A
Port C
Port E
Port F
Port A
Mixer
Mixer
48
MixerOutVol
MixerOutVol
MixerOutVol
MixerOutVol
MixerOutVol
MixerOutVol
MixerOutVol
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
Digital PC Beep
Digital PC Beep
Digital PC Beep
Digital PC Beep
Digital PC Beep
Digital PC Beep
Digital PC Beep
mute
DMIC_0
DMIC_1
0,-6,-12,-18dB
Analog Beep
Analog Beep
Analog Beep
Analog Beep
Analog Beep
Analog Beep
Analog Beep
92HD81
Port A
Port C
Port E
Port F
Digital Microphone volume and mute is
done after the ADC but shown here and in
widget list as same as analog path.
vol
+0/+10/+20/+30 dB
+0/+10/+20/+30 dB
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Boost
Boost
+0/+10/+20/+30 dB
+0/+10/+20/+30 dB
+0/+10/+20/+30 dB
+0/+10/+20/+30 dB
Cap-less
Analog PC_BEEP
BTL
DMIC
DMIC
Class-AB
HP
HP
LO
LO
LO
LO
Boost
Boost
Boost
Boost
PC AUDIO
DMIC_0
DMIC_1
(shared)
Pin 4
Pin 46
V 0.97 01/09
PORT A
Pin Complex
Pins 28/29
PORT B
Pin Complex
Pins 31/32
PORT C
Pin Complex
Pins 19/20
PORT D
Pin Complex
Pins 39/41/43/44
PORT E
Pin Complex
Pins 15/16
PORT F
Pin Complex
Pins 17/18
Mono
Pin Complex
Pin 27
Mic Bias
Mic Bias