20-101-0554 Rabbit Semiconductor, 20-101-0554 Datasheet - Page 29

• Manufacturer Part Number: 20-101-0554
• Description: COMPUTER SNGL BD BL2000 BOTT MNT
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0554

• Module/board Type: Single Board Computer Module
• For Use With/related Products: BL2000
• Lead Free Status / RoHS Status: Vendor undefined / Vendor undefined

The transformer/connector assembly ground is connected to the BL2000 printed circuit
board digital ground via a 0 Ω resistor “jumper,” R1, as shown in Figure 15.
The factory default is for the 0 Ω resistor “jumper” at R1 to be installed. In high-noise
environments, it may be useful to ground the transformer/connector assembly directly
through the chassis ground. This will be especially helpful to minimize ESD and/or EMI
problems. Once you have removed the 0 Ω resistor “jumper,” R1, use a ring lug to attach
the BL2000 to the chassis ground, thereby grounding the transformer/connector assembly.
A convenient position for the ring lug has been provided at the top-left mounting screw
hole near the RJ-45 jack as shown in Figure 16.
3.4.4 Programming Port
The BL2000 has a 10-pin programming header labeled J5. The programming port uses the
Rabbit 2000’s Serial Port A for communication. Dynamic C uses the programming port to
download and debug programs.
The programming port is also used for the following operations.
• Cold-boot the Rabbit 2000 after a reset.
• Remotely download and debug a program over an Ethernet connection using the
• Fast copy designated portions of flash memory from one Rabbit-based board (the
User’s Manual
RabbitLink EG2110.
master) to another (the slave) using the Rabbit Cloning Board.
Figure 16. Recommended Location for Ring Lug
Figure 15. Isolation Resistor R1
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