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Table 12 - Configuration Register
BIT
BIT NAME
SYMBOL
DESCRIPTION
4,3
Extended
Timeout 1,2
ET1, ET2
These bits allow the network to operate over longer
distances than the default maximum 4 miles by
controlling the Response, Idle, and Reconfiguration
Times. All nodes should be configured with the same
timeout values for proper network operation. The bit
combinations follow.
2.5 Mbps
operation
Response
Idle Time
Reconfig
ET2
ET1
Time (
µS)
(
µS)
Time (mS)
0
0
1193.6
1312
1680
0
1
596.8
656
1680
1
0
298.4
328
1680
1
1
74.7
82
840
5 Mbps
operation
Response
Idle Time
Reconfig
ET2
ET1
Time (
µS)
(
µS)
Time (mS)
0
0
596.8
656
840
0
1
298.4
328
840
1
0
74.7
82
840
1
1
37.35
41
420
2
Backplane
BACK-
PLANE
A logic "1" on this bit puts the device into Backplane
Mode signalling which is used for Open Drain and
Differential Driver interfaces.
1,0
Sub
Address 1,0
SUBAD 1,0
These bits determine which register at address 07 may
be accessed. The combinations are as follows:
SUBAD1
SUBAD0
Register
0
0
Tentative ID
0
1
Node ID
1
0
Setup
1
1
Next ID
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