AUDIOGRAM3
8
LSI PIN DESCRIPTION
（
LSI
端子機能表）
PIN
NO.
I/O
FUNCTION
NAME
PIN
NO.
I/O
NAME
PCM2904DBR
(X9570A00)
STEREO AUDIO CODEC WITH USB INTERFACE
DAC analog output for R-channnel
DAC analog output for L-channnel
Internal analog power supply for PLL
Analog ground for PLL
Internal analog power supply for PLL
Crystal oscillator output
Crystal oscillator input
Analog ground for oscillator
Internal analog power supply for oscillator
Test pin, must be connected to GND
Test pin, must be left open
Digital ground
Internal digital power supply
Suspend flag, active low (Low: suspend,
Hihg: operational)
FUNCTION
O
O
-
-
-
O
I
-
-
I
O
-
-
O
V
OUT
R
V
OUT
L
V
CCP1I
AGNDP
V
CCP2I
XTO
XTI
AGNDX
V
CCXI
TEST0
TEST1
DGND
V
DDI
SSPND
15
16
17
18
19
20
21
22
23
24
25
26
27
28
USB differential input/output plus
USB differential input/output minus
Connect to USB power (V
BUS
)
Digital ground for USB transceiver
HID key state input (mute), active high
HID key state input (volume up), active high
HID key state input (volume down), active high
Must be set to high
Internal analog power supply for codec
Analog ground for codec
ADC analog input for L-channnel
ADC analog input for R-channnel
Common for ADC/DAC (V
CCCI
/2)
I/O
I/O
-
-
I
I
I
I
I
-
-
I
I
-
D+
D-
V
BUS
DGNDU
HID0
HID1
HID2
SEL0
SEL1
V
CCCI
AGNDC
V
IN
L
V
IN
R
V
COM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PSUSB: IC102
