92HD91 Datasheet, PDF (52/298 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD91
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
4. FUNCTIONAL BLOCK DIAGRAM
Stream &
Channel
Select
Stream &
Channel
Select
Stream &
Channel
Select
ADC0
ADC1
ADC0
ADC1
PCM to
SPDIF OUT
SPDIF OUT1 (shared)
Pin 46
PCM to
SPDIF OUT
SPDIF OUT0
Pin 48
DAC0_Dig
vol
Digital
Mute
DAC 0
DAC0
DAC1_Dig
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep

HP
Port A
Boost
+0/+10/+20/+30 dB
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep
Cap-less

HP
Digital PC Beep
Analog Beep
Mic Bias
PORT A
Pin Complex
Pins 28/29
PORT B
Pin Complex
Pins 31/32
Stream &
Channel
Select
vol
Digital
Mute
DAC 1
DAC1
MixerOutVol
DAC0
DAC1

LO
Port C
Boost
+0/+10/+20/+30 dB
Mixer
MixerOutVol
mute

Vol
-46.5 to 0 dB
In 1.5 dB steps
MixerOutVol_Dig
ADC
mute
vol
mute
vol
mute
vol
mute
vol
mute
vol
mute
vol
-34.5 to +12 dB
In 1.5 dB steps
DAC0
DAC1
Digital PC Beep
Port A
Port C
MixerOutVol_Dig
DAC0_Dig
DAC1_Dig
Analog Beep_Dig

5-band
EQ
Highpass
Filter
Port E
Port F
Digital PC Beep
MixerOutVol_Dig
DAC0_Dig
DAC1_Dig
Analog Beep_Dig

Bandpass
Filter
Stereo to
Mono mix
Digital PC Beep
Analog Beep
Clocking _Class-D
Digital
PWM
controller
BTL
DAC M
LO
Mic Bias
PORT C
Pin Complex
Pins 19/20
PORT D
Mono
Pin Complex
Pin 25
Stream &
Channel
Select
ADC0
-16 to +30 dB
In 1 dB steps
mute
Gain
vol
Stream &
Channel
Select
ADC1
-16 to +30 dB
In 1 dB steps
mute
Gain
vol
Mixer
Port A
Port C
Port E
Port F
DMIC0
DMIC1
Mixer
Port A
Port C
Port E
Port F
DMIC0
DMIC1
MixerOutVol
DAC0
DAC1
Digital PC Beep
MixerOutVol
DAC0
DAC1

LO
Port E
Boost
+0/+10/+20/+30 dB
Analog Beep

LO
Port F
Boost
+0/+10/+20/+30 dB
PORT E
Pin Complex
Pins 15/16
Pin Complex
Pins 40/41/43/44
PORT F
Pin Complex
Pins 17/18
Beep_Active
Analog Beep_Dig
0,-6,-12,-18dB
mute vol
Detect/Convert
Analog Beep
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 19. Functional Block Diagram
IDT™ CONFIDENTIAL
52
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 1.2 1/12
92HD91