5
Testing the ATSTK94
2449A–FPSLI–01/02
Table 1.
Default for Jumpers and Switches
Jumper/Switch
Default Position
JP 1-16
The default position for all the switches and LEDs is with the Jumper set to
the “A” position, which means that the switches and LEDs are connected
to the microcontroller. By setting the jumpers to the “F” position, the
switches and LEDs are connected to FPGA.
JP17
Rev 2 – The jumper is set towards the edge of the board, this connects to
the 4 MHz crystal. Connecting to other side will connect to the 18 MHz
crystal.
Rev3 and beyond – The position of the jumper is changed and it should be
set on the inner side to connect to the 4 MHz crystal. Connecting towards
the outer side of the board will connect to the 18 MHz crystal.
JP18
Has a Jumper Connected
JP19
Set to the RESET Position
JP20
Jumper connects the SER_EN pin of the AT17 device to the PORTE pin 7
of the microcontroller. By connecting this jumper, you can perform 2-wire
serial interface. Default is “Not Connected”
JP21
Jumper Connects CEO/A2 to V
CC
. Default is “Not Connected”
JP22
Jumper connects the write protect pins of the AT17 device to V
CC
.Default is
“Not Connected”
JP23
Rev4 and beyond – Jumper connects the write protect pins of the AT17
device to V
CC
. Default is “Not Connected”
ON/OFF (Sw14)
Power Switch. Default Position Off
Run /Prog
Switch Set to
Prog.
