STAC9250 Datasheet, PDF (19/137 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
4.2. STAC9251
SDI- Pin 14
MODEM
SD0 ^{Pin 5}
BIT_CLK Pin 6
SDI-
CODEC Pin 8
SYNC Pin 10
Reset # Pin 11
Stream/
Channel
Select
Stream/
Channel
Select
Stream/
Channel
Select
Stream/
Channel
Select
Stream/
Channel
Select
Figure 2. 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
MIC
Boost
Modem
CA1 Pin2
CA2 Pin1
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
Line
Out
CD
Digital Mic
Interface
Clock
Control
Pin Complex _{Port B}
Pins 21/22
CD In
Pin Complex
Pins 18/20
DMIC_L,
DMIC_R
DMI_CLK
Pins 43/44
Pin 46
IDT™
19
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
V 1.1 102706