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3
Digital Interface
Digital Interface
In addition to the analog headers, the analog inputs and outputs may also be accessed through alternate
connectors, either screw terminals or audio jacks. The stereo microphone input is also tied to J6 and the
stereo headphone output (the HP set of outputs) is available at J7.
summarizes the screw terminals available on the TLV320AIC33EVM.
Table 2. Alternate Analog Connectors
DESIGNATOR
PIN 1
PIN 2
PIN3
J1
LINE1LP
LINE1LM
J2
LINE1RP
LINE1RM
J3
LINE2LP
LINE2LM
J4
LINE2RP
LINE2RM
J5
MIC3 IN LEFT
MIC3 IN RIGHT
AGND
J11
(+) HPLOUT
(-) HPLCOM
J12
(+) HPROUT
(-) HPRCOM
The TLV320AIC33EVM is designed to easily interface with multiple control platforms. Samtec part
numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin dual row
header/socket combination at J16 and J17. These headers/sockets provide access to the digital control
and serial data pins of the device. Consult Samtec at
or call 1-800- SAMTEC-9 for a
variety of mating connector options.
summarizes the digital interface pinout for the
TLV320AIC33EVM.
Table 3. Digital Interface Pin Out
PIN NUMBER
SIGNAL
DESCRIPTION
J16.1
NC
Not Connected
J16.2
GPIO1
General Purpose Input/Output #1
J16.3
SCLK
SPI Serial Clock
J16.4
DGND
Digital Ground
J16.5
NC
Not Connected
J16.6
GPIO2
General Purpose Input/Output #2
J16.7
/SS
SPI Chip Select
J16.8
RESET INPUT
Reset signal input to AIC33EVM
J16.9
NC
Not Connected
J16.10
DGND
Digital Ground
J16.11
MOSI
SPI MOSI Slave Serial Data Input
J16.12
SPI SELECT
Select Pin (SPI vs I
2
C Control Mode)
J16.13
MISO
SPI MISO Slave Serial Data Output
J16.14
AIC33 RESET
Reset
J16.15
NC
Not Connected
J16.16
SCL
I
2
C Serial Clock
J16.17
NC
Not Connected
J16.18
DGND
Digital Ground
J16.19
NC
Not Connected
J16.20
SDA
I
2
C Serial Data Input/Output
J17.1
NC
Not Connected
J17.2
NC
Not Connected
J17.3
BCLK
Audio Serial Data Bus Bit Clock (Input/Output)
J17.4
DGND
Digital Ground
TLV320AIC33EVM and TLV320AIC33EVM-PDK User's Guide
4
SBAU114 – November 2005