TMC2072_07 SMSC [SMSC Corporation], TMC2072_07 Datasheet - Page 22
TMC2072_07
Manufacturer Part Number
TMC2072_07
Description
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.TMC2072_07.pdf
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1.5.10 Node ID Setup
NOTE:
1.5.11 NST Resolution Setup
1.5.12 Standalone Mode Specification (Not supported)
1.5.13 Warning Timer Resolution
1.5.14 Diagnosis Mode
Revision 0.1 (06-07-07)
(NID[4:0]: Pin/Register)
Sets node ID. A unique number must be assigned to each node in the network in ascending order starting
from ID=01. However, ID = 00 and an ID that is larger than the maximum node ID are not valid. There are
two methods to assign the node ID, either through pin or register, settings depending on INIMODE (bit 7)
0: selects pin, 1: select register (The default is 0).
MAXID[4:0] determines the maximum node ID value. The token will only be passed around the nodes
whose IDs are equal to or less than the maximum ID value. In the CircLink network, a node whose
MAXID[4:0] and NID[4:0] matches is the node initiating the token passing.. Even if this particular node is
absent from the network, the network reconfiguration time is greatly reduced because the network will be
reconfigured only for the nodes with IDs less than MAXID[4:0]. Also, given that the maximum number of
nodes is fixed to 31 in a CircLink network, the original priority time of ARCNET, (255 – ID) x 146 μs* ,
which determines the waiting time for network reconfiguration initiation, is modified to (31-ID) x 146 μs,
greatly reducing reconfiguration time. Refer to section 2.4.2 - Reduction of Network Reconfiguration Time
for more details.
* 146 μs is defined under operation at 2.5 Mbps based on the ARCNET protocol. The time is half at 5
Mbps.
(NSTPRE[2:0]: Pin)
Selects the resolution of the network standard time counter (NST). Refer to section 2.11 - Network
Standard Time (NST) for details.
TMC2072 does not support standalone mode.
(WPRE[1:0]: Pin]
These pins select the warning timer resolution in Peripheral mode. Refer to section 2.9.4 - Warning Timer
(WT) at Remote Buffer Receive for more details.
(nDIAG: Pin)
This pin sets CircLink to the diagnosis mode. nDIAG to 0 forcibly fixes the MAXID to “1Fh”. Refer to
section 2.10 - Diagnostic Mode for details.
DATASHEET
Page 22
Peripheral Mode CircLink™ Controller
SMSC TMC2072
Datasheet
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