92hd99 Integrated Device Technology, 92hd99 Datasheet - Page 44

• Manufacturer Part Number: 92hd99
• Description: Single Chip Pc Audio System Codec+speaker Amplifier+capless Hp+ldo
• Manufacturer: Integrated Device Technology

92HD99
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
4. FUNCTIONAL BLOCK DIAGRAM
IDT™ CONFIDENTIAL
MixerOutVol_Dig
MixerOutVol
Mixer
mute
Stream &
Stream &
Stream &
Stream &
Channel
Channel
Channel
Channel
Select
Select
Select
Select
Vol
ADC
-46.5 to 0 dB
In 1.5 dB steps
ADC0
ADC1
Σ
vol
vol
mute
mute
-16 to +30 dB
In 1 dB steps
-16 to +30 dB
In 1 dB steps
Digital
Digital
Mute
Mute
Gain
Gain
mute
mute
mute
mute
mute
-34.5 to +12 dB
In 1.5 dB steps
Figure 15. Functional Block Diagram
DAC 0
vol
vol
DAC 1
vol
vol
vol
vol
vol
MixerOutVol_Dig
DAC0_Dig
DAC1_Dig
Digital PC Beep
DAC0
DAC1
Port A
Port C
Port F
DAC0_Dig
DAC1_Dig
DAC0
DAC1
DMIC0
DMIC0
Port C
Port C
Port A
Port F
Port A
Port F
Mixer
Mixer
44
Analog Beep_Dig
MixerOutVol
MixerOutVol
MixerOutVol
MixerOutVol
Analog Beep_Dig
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
DAC0
DAC1
Digital PC Beep
Digital PC Beep
Digital PC Beep
Digital PC Beep
Analog Beep
Beep_Active
Σ
5-band
EQ
Analog Beep
Analog Beep
Analog Beep
Analog Beep
DMIC_0
Port C
Port A
Port F
Highpass
mute
mute
Filter
0,-6,-12,-18dB
0,-6,-12,-18dB
Digital Microphone volume and mute is
done after the ADC but shown here and in
widget list as same as analog path.
Σ
Σ
Σ
Σ
+0/+10/+20/+30 dB
vol
vol
+0/+10/+20/+30 dB
+0/+10/+20/+30 dB
+0/+10/+20/+30 dB
Cap-less
controller
Clocking
Digital
PWM
Boost
Detect/Convert
Class-D
BTL
HP
HP
LO
LO
DMIC
Boost
Boost
Boost
Analog PC_BEEP
V 0.91 10/10
PORT A
Pin Complex
Pins 22/23
PORT B
Pin Complex
Pins 25/26
PORT C
Pin Complex
Pins 15/16
PORT D
Pin Complex
Pins 34/35/37/38
PORT F
Pin Complex
Pins 13/14
Mic Bias
Mic Bias
DMIC_0
Pin 3
92HD99