STAC9250 Datasheet, PDF (18/137 Pages) Integrated Device Technology – TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES

STAC9250/9251
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
PC AUDIO
4. FUNCTIONAL BLOCK DIAGRAMS
4.1. STAC9250
SDI-
MODEM^{Pin 14}
SD0 Pin 5
BIT_CLK ^{Pin 6}
SDI-
Pin 8
CODEC
SYNC Pin 10
Reset # Pin 11
Stream/
Channel
Select
Stream/
Channel
Select
Stream/
Channel
Select
Stream/
Channel
Select
Stream/
Channel
Select
Figure 1. STAC9250 Functional Block Diagram
Isolation
Interface
Control
Interface
SPDIF
Receiver
CA1, CA2 Pins 15/16
AOUT Pin 17
Pin 47
SPDIF IN
PCM to
SPDIF
OUT
Pin 12
Analog PC
Beep
SPDIF Pin 48
-6dB
Σ
vol mute +0 dB
MONO_OUT
Pin 37
DAC A DAC A
Digital Analog
Σ
vol mute
Digital
PC Beep
HP
Out
HP
Out
Line
Out
Pin Complex _{Port A}
Pins 39/41
Pin Complex _{Port D}
Pins 35/36
Pin Complex _{Port C}
Pins 23/24
STEREO
ADC
+22 dB mute vol
Modem
CA1 Pin2
CA2 Pin1
MIC
Boost
Line
Out
Pin Complex _{Port B}
Pins 21/22
CD In
CD
Pin Complex
Pins 18/20
Pin 13: Sense A
Pin 27: VREF In
Pin 28: VREF Out (switchable Mic Bias)
Pin 29: VREF Out (switchable Mic Bias)
Pin 32: CAP 2
Pin 33: GPIO0
Pin 34: GPIO1
Pin 45: GPIO2
Pin 47: GPIO3
IDT™
18
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
V 1.1 102706