92HD81 Datasheet, PDF (46/279 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
4. FUNCTIONAL BLOCK DIAGRAMS
Port C is input only on the TA revision. RA revision is output capable.
Stream &
Channel
Select
Stream &
Channel
Select
ADC0
ADC1
ADC0
ADC1
PCM to
SPDIF OUT
PCM to
SPDIF OUT
SPDIF OUT1 (shared)
Pin 46
SPDIF OUT0
Pin 48
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep

HP
Port A
Boost
+0/+10/+20/+30 dB
Mic Bias
PORT A
Pin Complex
Pins 28/29
Stream &
Channel
Select
vol
Digital
Mute
DAC 0
DAC0
Stream &
Channel
Select
Stream &
Channel
Select
Stream &
Channel
Select
vol
Digital
Mute
DAC 1
ADC0
0 to +22.5 dB
In 1.5 dB steps
mute
Gain
vol
ADC1
0 to +22.5 dB
In 1.5 dB steps
mute
Gain
vol
DAC1
Mixer
Port C
Port E
Port F
DMIC0
DMIC1
Port A
Mixer
Port C
Port E
Port F
DMIC0
DMIC1
Port A
Mixer
MixerOutVol
mute
Vol
-46.5 to 0 dB
In 1.5 dB steps

mute
vol
mute
vol
mute
vol
mute
vol
mute
vol
mute
vol
-34.5 to +12 dB
In 1.5 dB steps
Port A
DAC0
DAC1
Port C
Port E
Port F
Digital PC Beep
MixerOutVol
DAC0
DAC1
Digital PC Beep
MixerOutVol
DAC0
DAC1
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep

Cap-less
HP
Analog Beep

LO
Port C
Boost
+0/+10/+20/+30 dB
Analog Beep

Class-AB
BTL
Digital PC Beep
MixerOutVol
DAC0
DAC1
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep

LO
Port E
Analog Beep
Boost
+0/+10/+20/+30 dB

LO
Port F
Boost
+0/+10/+20/+30 dB
Digital PC Beep
Analog Beep
MixerOutVol
DAC0
DAC1

LO
PORT B
Pin Complex
Pins 31/32
Mic Bias
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
mute
vol
0,-6,-12,-18dB
Analog PC_BEEP
Digital Microphone volume and mute is
done after the ADC but shown here and in
widget list as same as analog path.
+0/+10/+20/+30 dB
DMIC_0
Boost
DMIC
DMIC_1
Boost
DMIC
+0/+10/+20/+30 dB
DMIC_0
Pin 4
DMIC_1
(shared)
Pin 46
Figure 8. Functional Block Diagram
IDT CONFIDENTIAL
46
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD81