Connect Tech CANPRO CTIM-00043 - Manual (Page 8)

CANpro/104 User Manual
CTIM-00043 (0.01) 1/15/2010 www.connecttech.com 8
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Secondly, the Memory Space can be enabled by Application or Driver software, after the Operating
system has started. This can be accomplished by writing a data value to an I/O Space Address which
is decoded by the following J3B Jumper settings. Only one byte of the I/O Space is decoded at this
I/O Address, and the location is Write Only.
J3B
I/O Address
Position #5 Position #6 Position #7
Removed Removed Removed 0x200
Removed Removed Installed 0x240
Removed Installed Removed 0x280
Removed Installed Installed 0x2C0
Installed Removed Removed 0x300
Installed Removed Installed 0x340
Installed Installed Removed 0x380
Installed Installed Installed 0x3C0
Table 3
Notes:
1. These I/O address choices do NOT access the CAN Controllers, they are used in
Memory Mode to enable the Memory Space address decoding.
2. Writing a data value of 0xA5 will enable the Memory Space, and a data value of 0x5A
will disable the Memory Space. All other data values written will be ignored.
3. When the Memory Space is permanently enabled (when J3C-1 is removed), any data
value written to the “Memory Enable” I/O address will be ignored.
Base Address Decoding
The CTI CANpro/104 board decodes its Base Address setting (in either Memory or I/O Spaces) by
comparing (matching) various Jumper settings with PC/104 Bus Address bits.
If a Jumper is installed, then the corresponding Address Bit will be matched as a logical “1”.
If a Jumper is removed, then the corresponding Address Bit will be matched as a logical “0”.
The matching of Jumper settings to Address bits depends on whether the board is operated in Memory or I/O
Spaces, and whether PeliCAN or BasicCAN mode is selected.
Jumper
Group
Position
Memory Space
Address Bit
I/O Space
Address Bit
PeliCAN BasicCAN
J3A 2 23 X X
3 22 X X
4 19 X X
5 18 X X
6 17 10 10
J3B 1 16 9 9
2 15 8 8
3 14 X 7
4 13 X 6
Table 4
Notes: