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PCM2902E Datasheet(PDF) 7 Page - Texas Instruments

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Part No. PCM2902E
Description  STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE ENDED ANALOG INPUT/OUTPUT AND S/PDIF
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PCM2902E Datasheet(HTML) 7 Page - Texas Instruments

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PCM2900
PCM2902
SLES035B − MARCH 2002 − REVISED JUNE 2004
www.ti.com
7
PCM2900 Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
SSPND
28
O
Suspend flag, active low (Low: suspend, High: operational)
AGNDC
11
Analog ground for codec
AGNDP
18
Analog ground for PLL
AGNDX
22
Analog ground for oscillator
D–
2
I/O
USB differential input/output minus(1)
D+
1
I/O
USB differential input/output plus(1)
DGND
26
Digital ground
DGNDU
4
Digital ground for USB transceiver
HID0
5
I
HID key state input (mute), active high(3)
HID1
6
I
HID key state input (volume up), active high(3)
HID2
7
I
HID key state input (volume down), active high(3)
SEL0
8
I
Must be set to high(5)
SEL1
9
I
Must be set to high(5)
TEST0
24
I
Test pin, must be connected to GND
TEST1
25
O
Test pin, must be left open
VBUS
3
Connect to USB power (VBUS)
VCCCI
10
Internal analog power supply for codec(4)
VCCP1I
17
Internal analog power supply for PLL(4)
VCCP2I
19
Internal analog power supply for PLL(4)
VCCXI
23
Internal analog power supply for oscillator(4)
VCOM
14
Common for ADC/DAC (VCCCI/2) (4)
VDDI
27
Internal digital power supply(4)
VINL
12
I
ADC analog input for L-channel
VINR
13
I
ADC analog input for R-channel
VOUTL
16
O
DAC analog output for L-channel
VOUTR
15
O
DAC analog output for R-channel
XTI
21
I
Crystal oscillator input(2)
XTO
20
O
Crystal oscillator output
(1) LV-TTL level
(2) 3.3-V CMOS level input
(3) 3.3-V CMOS level input with internal pulldown. This pin informs the PC of serviceable control signals such as mute, volume up, or volume down,
which has no connection with the internal DAC or ADC directly. See the Interface #3 and End-Points sections.
(4) Connect a decouple capacitor to GND
(5) TTL Schmitt trigger, 5 V tolerant


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