Texas Instruments PGA309EVM-USB 用户手册
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PGA309EVM-USB Hardware Setup
3.4
Connecting Power
After the two parts of the PGA309EVM-USB are connected, as shown in
, connect the power to
the EVM. Always connect power before connecting the USB cable. If you connect the USB cable before
connecting the power, the computer will attempt to communicate with an unpowered device that will not be
able to respond.
connecting the power, the computer will attempt to communicate with an unpowered device that will not be
able to respond.
Figure 12. Connecting Power to the EVM
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SBOU084 – February 2010
PGA309EVM-USB
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