92HD87 Datasheet, PDF (40/204 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD87
SINGLE CHIP PC AUDIO SYSTEM, CODEC+STEREO SPEAKER AMPLIFIER+CAPLESS HP+LDO
4. FUNCTIONAL BLOCK DIAGRAMS
Port C is input only on the TB revision. RA revision is output capable.
Stream &
Channel
Select
vol
Digital
Mute
DAC 0
DAC0
Stream &
Channel
Select
Stream &
Channel
Select
Stream &
Channel
Select
vol
Digital
Mute
DAC 1
Loop 1 ADC1
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 F
DMIC0
Port A
Mixer
Port C
Port F
DMIC0
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
-34.5 to +12 dB
In 1.5 dB steps
Port A
DAC0
DAC1
Port C
Port F
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
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
Stereo
BTL
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep

LO
Port F
Boost
+0/+10/+20/+30 dB
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 F
Pin Complex
Pins 17/18
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_0
Pin 4
Figure 8. Functional Block Diagram
IDT CONFIDENTIAL
40
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD87