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CONFIG SWITCH
The CME-12D60 board is shipped from the manufacturer with the following default CONFIG
SWITCH settings:
1
2
ON
ON
The 8 position CONFIG SWITCH provides an easy method of configuring the CME-12D60
board operation.
usage:
CONFIG
SWITCH
1
MODE A selection (see Mode chart below)
2
MODE B selection (see Mode chart below)
3
EXT – External Memory enable
4
MON – Monitor Memory enable
5
VPP - Flash VPP voltage enable
6
RXD0 – COM1 Serial Port RXD0 input enable
7
RXD1 – COM2 Serial Port RXD1 input enable
8
CAN Port RX enable
(1)
Enables memory bus operation for access to board memory. Expanded bus must be
on for proper operation.
(2)
Enables monitor EPROM's in memory map at 0xC000 – FFFF hex if CONFIG
SWITCH position 3 is also on. When in off position memory space is SRAM for BDM
use.
MODE CHART
Single Chip Mode
Expanded Wide Mode
NOTE: Expanded Narrow Mode is not available on this board.
3
4
5
ON
ON
OFF
Following are the configuration switch descriptions and HC12 I/O port
OPERATION when in ON position
MOD A and B = OFF
MOD A and B = ON
6
7
8
ON
OFF
OFF
(1)
(2)
Boot from Internal Flash
Boot from External Memory
10
I/O PORT USED
MODA / PE5
MODB / PE6
PORT A, B, Ext. Bus
N/A
N/A
PS0 / RXD0
PS3 / RXD1
PCAN0
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