92HD99B Datasheet, PDF (44/225 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD99
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
4. FUNCTIONAL BLOCK DIAGRAM
Stream &
Channel
Select
vol
Digital
Mute
DAC 0
Stream &
Channel
Select
vol
Digital
Mute
DAC 1
DAC0_Dig
DAC0
DAC1_Dig
DAC1
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
Stream &
Channel
Select
ADC0
-16 to +30 dB
In 1 dB steps
mute
Gain
vol
Mixer
Port A
Port C
Port F
DMIC0
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep

LO
Port C
Boost
+0/+10/+20/+30 dB
Digital PC Beep
MixerOutVol_Dig
DAC0_Dig
DAC1_Dig
Analog Beep_Dig

5-band
EQ
Clocking _Class-D
Highpass
Filter
Digital
PWM
controller
BTL
Mic Bias
PORT A
Pin Complex
Pins 22/23
PORT B
Pin Complex
Pins 25/26
Mic Bias
PORT C
Pin Complex
Pins 15/16
PORT D
Pin Complex
Pins 34/35/37/38
Stream &
Channel
Select
ADC1
-16 to +30 dB
In 1 dB steps
mute
Gain
vol
Mixer
Port A
Port C
Port F
DMIC0
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
-34.5 to +12 dB
In 1.5 dB steps
DAC0
DAC1
Port A
Port C
Port F
Digital PC Beep
MixerOutVol
DAC0
DAC1
Analog Beep

LO
Port F
Boost
+0/+10/+20/+30 dB
PORT F
Pin Complex
Pins 13/14
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_0
Pin 3
Figure 15. Functional Block Diagram
IDT™ CONFIDENTIAL
44
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V1.2 1/12
92HD99