92HD202 Datasheet, PDF (21/168 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

92HD202
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
4. BLOCK AND FUNCTIONAL DIAGRAMS
4.1. 92HD202 FUNCTIONAL BLOCK DIAGRAM
Figure 1. Functional Block Diagram - 92HD202
Stream&
Channel
Select
Stream &
Channel
Select
Stream &
Channel
Select
Stream &
Channel
Select
SPDIF
Receiver
ADC PCM
PCM ADC
PCM
Stream &
Channel
Select
SPDIF IN Pin 47
PCM to
SPDIF
OUT
SPDIF ^{Pin 48}
Analog PC Beep
Pin 12
Digital PC Beep
vol
Digital
Mute
DAC
0
X
Stream &
Channel
Select
Stream &
Channel
Select
Stream &
Channel
Select
vol
Digital
Mute
vol
Digital
Mute
vol
Digital
Mute
Digital PC Beep
DAC
1
X
Digital PC Beep
DAC
2
X
Digital PC Beep
DAC
3
X
STAC9220
HP
HP
Strong Line
Out
Mic Pass Forward
PORT A
Pin Complex
Pins 39/41
PORT D
Pin Complex
Pins 35/36
PORT C
Pin Complex
Pins 23/24
PORT B
Pin Complex
Pins 21/22
PORT F
Pin Complex
Pins 16/17
Note: * All measurements
are 1% THD.
Note: If the mixer is turned
on THD is no better than
70dB to Ports A/D
Pin 2: Volume Up
Pin 3: Volume Down
Pin 5: SDATA_Out
Pin 6: BIT_CLK
Pin 8: SDATA_In
Pin 10: SYNC
Pin 11: Reset #
Pin 12: Analog PC Beep
Pin 13: Sense A
Pin 27: VREF FILT
Pin 28: VREF_OutB
Pin 29: VREF_OutC
Pin 30: AFILT1
Pin 31: AFILT2
Pin 32: VREF_OutD
Pin 33: CAP2
Pin:34 Sense B
Pin 43: N.C.
Pin44: GPIO2
Pin 45: GPIO0
Pin 46: GPIO1
Pin 47: GPIO3
CD
D2S
Pins 18/19/20
PORT E
Pin Complex
Pins 14/15
E
F
B
C
D
Boost
A
+0/+10/+20/
CD
+30/+40 dB
E
F
B
C
Boost
D
A
+0/+10/+20/
CD
+30/+40 dB
vol Gain
+0 to +22.5 dB
In 1.5 dB steps
mute
vol Gain
+0 to +22.5 dB
In 1.5 dB steps
mute
STEREO
ADC1
PCM
STEREO
PCM
ADC0
IDT™ 8-CHANNEL HIGH DEFINITION AUDIO CODEC
21
IDT CONFIDENTIAL
92HD202
REV 1.2 112006