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I/O Connector and Signals
3-6
3.3.3
External Power Connectors
While it is most convenient to power the AIC26EVM from the USB bus,
external power supplies can be used. The two connectors detailed in
Table 3−5 are provided for the external power.
Table 3−5. External Power Connectors
Reference
Designator
Description
Pin
Number
Signal Name
J9
External power
1
6 VDC to 10 VDC input
terminal block
2
Ground
J10
External power jack
−
6 VDC to 10 VDC input, positive center terminal
3.3.4
External Audio Data (I
2
S) Connector
The I
2
S bus, which carries audio data to and from the AIC26, is brought out
to header J11 and can be connected to external I
2
S devices if the I
2
S interface
to the on-board TAS1020B is disabled.
Table 3−6. Audio Data Connector
Reference Designator
Description
Pin Number
Signal Name
1
MCLK
3
BCLK
5
LRCLK
J11
Audio data (I
2
S) connector
7
I2SDIN
J11
Audio data (I S) connector
9
I2SDOUT
11
PWD/AWDS
2,4,6,8,10,12
Ground
3.3.5
External SPI Connector
The AIC26 SPI port is brought out to the J12 header. It can be driven by an
external source if the onboard microprocessor is disabled.
Table 3−7. External SPI Connector
Reference
Designator
Description
Pin
Number
Signal
Name
Function
1
RESET
Reset line
3
SS
Slave select for SPI bus.
5
SCLK
Serial clock for SPI bus.
External SPI
7
MOSI
Master out, slave in data line for SPI bus. Data
travels to the AIC26 over this line.
J12
External SPI
Bus
9
MISO
Master in, slave out data line for SPI bus. Data
travels from the AIC26 over this line.
11
PENIRQ
AUX, BAT1, BAT2 data available (DAV) interrupt.
2, 4, 6, 8,
10, 12
GND
Ground
Summary of Contents for TLV320AIC26EVM
Page 12: ...1 4 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 15: ...Quick Start 2 3 Getting Started Figure 2 1 Default Software Screen ...
Page 16: ...2 4 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 26: ...Program Description 3 10 Figure 3 1 Data Acquisition Screen With ADC Registers Reading ...
Page 28: ...Program Description 3 12 Figure 3 3 Data Acquisition Screen With Boost Filter Parameters ...
Page 37: ...3 21 Operation THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 39: ...Component Locations 4 2 4 1 Component Locations ...