S/PDIF IN
S/PDIF OUT
USB
Connector
USB Interface
SW001 - SW003
Operation Control
3.3 V
REG
12-MHz XTAL
CN002
CN001
Lch
Rch
V
L/R
OUT
V L/R
IN
DIN
DOUT
D+/–
V
BUS
OPA2353
LPF
OPA2353
LPF
CN101
Analog Out
Lch
Rch
CN102
Analog In
PCM2900C
PCM2902C
PCM2906C
GND GND
OUT
IN
Description
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1.1
Block Diagram
A block diagram of the PCM2900C/2902C/2906C is shown in
Figure 1
.
Figure 1. PCM290xCEVM-U Block Diagram
1.2
Connectors and Jumpers
Table 1
summarizes the connectors and jumpers on the PCM290xCEVM-U.
Figure 2
illustrates the pinout
for CN002.
Table 1. Connectors and Jumpers
Connector/Jumper
Description
USB port (series B connector); connects to a USB
CN001
cable/connector
CN101
Audio LINE OUT (stereo mini-jack, 1.98 V
PP
full-scale)
CN102
Audio LINE IN (stereo mini-jack, 1.98 V
PP
full-scale)
CN002
S/PDIF IN/OUT for PCM2902C/PCM2906C
Figure 2. CN002 Pinout
1.3
Switch Settings
•
SW001: Human interface device (HID) key state (mute)
•
SW002: HID key state (volume up)
•
SW003: HID key state (volume down)
These switches should be set to logic level low when no HID is being used, or toggled high for HID control
of the respective parameters.
6
PCM2900C/2902C/2906CEVM-U
SBAU195
–
September 2011
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2011, Texas Instruments Incorporated