17
Appendix B: Communications Parame-
ters
The values listed below are those used by the network services tool to cal-
culate message timing. The actual parameters set by
RTR_CFG.EXE
will
be different.
Parameters specified as “Configurable” may be changed by a network
services tool.
Transceiver ID
N/A
Media
Coactive ROUTER-LL
Neuron Chip to Transceiver Interface
Special Purpose
Interface Bit Rate
1.25Mbps
Input Clock
10MHz
Minimum Clock
10MHz
Number of Priority Slots
Configurable; default = 0 slots
Average Packet Size
Configurable; default = 15 bytes
Oscillator Accuracy
200ppm
Oscillator Wakeup
0ppm
Collision Detect (CD)
N/A
CD Term after Preamble
N/A
CD Through Packet End
N/A
Bit Sync Threshold
N/A
Hysteresis
N/A
Filter
N/A
Network Bit Rate
Configurable; see below
Alternate Rate
N/A
Wakeup Pin Direction
Input
XCVR Controls Preamble
Yes
General Purpose Data
00 00 00 00 00 00 00
Allow Node Override
No
Receive Start Delay
Configurable; see below
Receive End Delay
0.0 bits (0 microsec)
Indeterminate Time
0.0 bits (0 microsec)
Min. Interpacket Time
0.0 bits (0 microsec)
Turnaround Time
N/A
Missed Preamble
N/A
Preamble Length
0.0 bits (0 microsec)
Use Raw Data
No
The Network Bit Rate and Receive Start Delay parameters vary depend-
ing on the speed of your IP network. Use the following guidelines to set
these parameters.
•
For high-speed LAN connections with few or no routers, use 5000
bps for Network Bit Rate and 15.0 bits (1100 microsec) for Receive
Start Delay.
Summary of Contents for ROUTER-LL
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