101-0681 Rabbit Semiconductor, 101-0681 Datasheet - Page 108

• Manufacturer Part Number: 101-0681
• Description: KIT DEVELOPMENT RCM3700 INT'L
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore 3000r
• Type: MPU Moduler

Specifications of 101-0681

• Contents: RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
• Processor To Be Evaluated: Rabbit 3000
• Interface Type: Ethernet
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 4.75 V to 5.25 V
• For Use With/related Products: RCM3700
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 101-681; 101-681

The RCM3700 Prototyping Board comes with a 220  termination resistor and two 681 
bias resistors installed and enabled with jumpers across pins 1–2 and 5–6 on header JP1,
as shown in Figure B-9.
For best performance, the termination resistors in a multidrop network should be enabled
only on the end nodes of the network, but not on the intervening nodes. Jumpers on boards
whose termination resistors are not enabled may be stored across pins 1–3 and 4–6 of
header JP1.
RabbitCore RCM3700 User’s Manual
Figure B-9. RS-485 Termination and Bias Resistors
W
W
W
106