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CANpro/104 User Manual
9 www.connecttech.com CTIM-00043 (0.01) 1/15/2010
800-426-8979 | 519-836-1291
1. X = Address bit is ignored (and the corresponding Jumper is Not Used).
2. When Memory Space is selected, PC/104 Address bits 20 and 21 are always decoded as logical
“0”.
To determine which Jumpers to install and which to remove, the desired Address needs to be broken down
into a binary number, all the Jumpers that correspond to “1-bits” must be installed, and all Jumpers
corresponding to “0-bits” must be removed.
The remaining lower bits of the PC/104 Bus Address are either, ignored, or are used to select and address the
Registers of the SJA1000 CAN controllers, in the following manner.
When Memory Space is selected
PC/104 Bus
Address Bit
SJA1000 Selection
or Register Address Bit
12
Address bit is ignored
11
Address bit is ignored
10
Address bit is ignored
9
Address bit is ignored
8
Address bit is ignored
7
Select SJA1000 device
=0, selects the CAN-0 Port
=1, selects the CAN-1 Port
6
6
5
5
4
4
3
3
2
2
1
1
0
0
Table 5
When I/O Space is selected
PC/104 Bus
Address Bit
SJA1000 Selection
or Register Address Bit
PeliCAN Addressing Mode
BasicCAN Addressing Mode
10
Decoded (see Table 4)
Decoded (see Table 4)
9
Decoded (see Table 4)
Decoded (see Table 4)
8
Decoded (see Table 4)
Decoded (see Table 4)
7
Select SJA1000 device
=0, selects the CAN-0 Port
=1, selects the CAN-1 Port
Decoded (see Table 4)
6
6
Decoded (see Table 4)
5
5
Select SJA1000 device
=0, selects the CAN-0 Port
=1, selects the CAN-1 Port
4
4
4
3
3
3
2
2
2
1
1
1
0
0
0
Table 6