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DSP56858EVM User Manual, Rev. 3
1-4
Freescale Semiconductor
1.3 56858EVM Connections
An interconnection diagram is shown in
Figure 1-3
for connecting the PC and the external
+12.0V DC/AC power supply or ex5.0V DC lab power supply to the 56858EVM board.
PC-compatible
Cable
Computer
Parallel Extension
56858EVM
External
+12.0V
Power
P1
P2
Connect cable
to Parallel/Printer port
with 2.1mm,
receptacle
connector
+5.0V
Lab
Supply
TB1
Figure 1-3. Connecting the 56858EVM Cables
Perform the following steps to connect the 56858EVM cables:
1. Connect the parallel extension cable to the Parallel port of the host computer.
2. Connect the other end of the parallel extension cable to P1, shown in
Figure 1-3
, on the
56858EVM board. This provides the connection which allows the host computer to
control the board.
3. Make sure that the ex12.0V DC 1.2A switching power supply or the external
+5.0V DC 1A lab power supply is not plugged into a +120V AC power source.
4. Connect the 2.1mm output power plug from the external switching power supply into P2,
shown in
Figure 1-3
, on the 56858EVM board. Optionally, attach an ex5.0V DC
lab power supply via the 2-pin terminal block, TB1.
5. Apply power to the external power supply. The green Power-On LED, LED7, will
illuminate when power is correctly applied.
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