TC1796
Peripheral Units (Vol. 2 of 2)
Controller Area Network (MultiCAN) Controller
User’s Manual 22-83 V2.0, 2007-07
MultiCAN, V2.0
The Node Port Control Register NPCRx configures the CAN bus transmit/receive ports.
NPCRx can be written only if bit NCRx.CCE is set.
NPCRx (x = 0-3)
Node x Port Control Register (20C
H
+x*100
H
) Reset Value: 0000 0000
H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0
r
1514131211109876543210
0 LBM 0 RXSEL
rrwrrw
Field Bits Type Description
RXSEL [2:0] rw Receive Select
RXSEL selects one out of 8 possible receive inputs of
CAN node x. The CAN receive signal is performed
only through the selected input.
Note: In TC1796, only specific combinations of
RXSEL are available (see also “Receive Input
Selection” on Page 22-207).
LBM 8rwLoop-Back Mode
0
B
Loop-Back Mode is disabled.
1
B
Loop-Back Mode is enabled. This node is
connected to an internal (virtual) loop-back
CAN bus. All CAN nodes which are in Loop-
Back Mode are connected to this virtual CAN
bus so that they can communicate with each
other internally. The external transmit line is
forced recessive in Loop-Back Mode.
0 [7:3],
[31:9]
r Reserved
Read as 0; should be written with 0.
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