92HD92 Datasheet, PDF (80/306 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD92
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
4. FUNCTIONAL BLOCK DIAGRAM
Stream &
Channel
Select
Stream &
Channel
Select
ADC0
ADC1
ADC0
ADC1
Stream &
Channel
Select
PCM to
SPDIF OUT
PCM to
SPDIF OUT
SPDIF OUT1 / DMIC1 / Aux_In (shared)
Pin 46
Digital PC Beep
SPDIF OUT0 / Aux_Out (shared)
Pin 48
MixerOutVol
DAC0
DAC1
Analog Beep

HP
Port A
Boost
+0/+10/+20/+30 dB
Volume
& Mute
Digital
Mix
DAC 0
DAC0_Dig
DAC0
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep
Cap-less

HP
Stream &
Channel
Select
Secondary Audio
vol
Digital
Mute
DAC 1
DAC1_Dig
Digital PC Beep
DAC1
MixerOutVol_Dig
DAC0_Dig
DAC1_Dig
Analog Beep_Dig
5-
 band
EQ
Clocking _Class-D
Highpass
Filter
Digital
PWM
controller
BTL
Stream &
Channel
Select
ADC0
-16 to +30 dB
In 1 dB steps
mute
Gain
vol
Mixer
Port A
Port F
DMIC0
DMIC1
Digital PC Beep
Analog Beep_Dig
MixerOutVol_Dig
DAC0_Dig
DAC1_Dig

Bandpass
Filter
DAC M
LO
Stereo to
Mono mix
Digital PC Beep
Analog Beep
MixerOutVol_Dig
DAC0_dig
DAC1_dig

SRC
I2S
Mic Bias
PORT A
Pin Complex
Pins 28/29
PORT B
Pin Complex
Pins 31/32
PORT D
Pin Complex
Pins 40/41/43/44
Mono
Pin Complex
Pin 25
PORT E
Pin Complex
Pins 15/16
Stream &
Channel
Select
ADC1
-16 to +30 dB
In 1 dB steps
mute
Gain
vol
Mixer
Port A
Port F
DMIC0
DMIC1
Mixer
MixerOutVol
mute

Vol
-46.5 to 0 dB
In 1.5 dB steps
mute
vol
mute
vol
mute
vol
mute
vol
-34.5 to +12 dB
In 1.5 dB steps
MixerOutVol_Dig
ADC
DAC0
DAC1
Port A
Port F
Port F
Boost
DAC 2
I2S
+0/+10/+20/+30 dB
Port B
Port D
Port E
Port A
Port F
DMIC0
Routing
I2S
I2S

I2S
PORT F
Pin Complex
Pins 17/18
Aux_Out
Pin 48 (shared)
Aux_In
Pin 46 (shared)
I2S_Secondary
Pin 12
Beep_Active
Analog Beep_Dig
Analog Beep
0,-6,-12,-18dB
mute vol
Detect/Convert
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 22. Functional Block Diagram
IDT CONFIDENTIAL
80
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 1.1 1/12
92HD92