Texas Instruments TLV320DAC26EVM, Руководство пользователя

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I/O Connector and Signals
3-5 Operation
3.3.2 USB Interface Connector
Connection to a USB cable from a PC is made through J8, a standard USB
type−B receptacle.
Table 3−4. USB Interface Connector
Reference
Designator
Description
Pin
Number
Signal Name Function
1 VCC + 5-V supply from USB
J8 USB slave connection to PC
2 D− – Differential USB signal
J8 USB slave connection to PC
3 D+ + Differential USB signal
4 GND Ground
3.3.3 External Power Connectors
While it is most convenient to power the DAC26EVM 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
terminal block 1 6 VDC to 10 VDC input J9 External power
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 DAC26, is brought out
to header J11 and can be connected to external I
2
S devices if the I
2
S interface
to the onboard 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 Reserved
J11 Audio data (I S) connector
9 I2SDOUT
11 PWD/AWDS
2,4,6,8,10,12 Ground