Rabbit BL2020, User Manual

Page: 70 / 94

66 Wildcat (BL2000)
Table A-2 lists the configuration options.
NOTE: Only header JP1 uses actual jumpers. The other connections are made using 0
Ω
surface-mounted resistors.
Table A-2. BL2000 Jumper Configurations
Header Description Pins Connected
Factory
Default
J9
Pin 12 is Vcc R160 installed
Pin 12 is GND R161 installed
×
JP1
RS-485 Bias and Termination
Resistors
1–2
3–4 Bias and termination resistors
connected
×
None
Bias and termination resistors not
connected
JP2 Flash Memory Bank Select
1–2 Normal Mode
×
2–3 Bank Mode
JP3 D/A Converter Power Supply
1–2 +V
×
2–3 +REF
JP4 Flash Memory Size
1–2 128K/256K
×
2–3 512K
JP5 SRAM Size
1–2 128K
×
2–3 512K
JP6
Digital Input Pull-Up/Pull-Down
Resistors
1–2 Pulled up
×
2–3 Pulled down