COM20020ILJP Datasheet, PDF (38/72 Pages) Microchip Technology – 5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
Datasheet
BIT
BIT NAME
SYMBOL
DESCRIPTION
1,0 Reconfiguration Timer RCNTM1,0 These bits are used to program the reconfiguration timer as a
1, 0
function of maximum node count. These bits set the time out period
of the reconfiguration timer as shown below. The time out periods
shown are for 5 Mbps.
RCNTM1 RCNTM0 Time Out Period Max Node Count
0
0
420 mS
Up to 255 nodes
0
1
105 mS
Up to 64 nodes
1
0
52.5 mS
Up to 32 nodes
1
1
26.25 mS*
Up to 16 nodes
Note*: The node ID value 255 must exist in the network for 26.25
mS timeout to be valid.
Revision 12-05-06
Page 38
DATASHEET
SMSC COM20020I Rev D