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| Jumper DescriptionsThe jumpers used to configure the MCBXC167 board are: - J1 & J2 - 1M, 2M, CAN (Default: ON, ON)
These jumpers enable the CAN2 transceiver or expand the external Flash ROM address space to 2 MB.  | When the jumper is set in the middle, the entire 2MByte space of the Flash ROM is accessible. The CAN2 RxD line is not connected to the transceiver. |  | When two jumpers are used, the Flash ROM access is limited to 1 MB and the CAN2 RxD line is connected to the transceiver. |
- JP3 & JP4 - VAREF, GND (Default: ON, ON)
The VAREF and GND jumpers provide the reference voltage for the on-chip A/D converter. When these jumpers are in place, the on-board 5V reference is used. When these jumpers are removed, you must provide the A/D reference voltages to the board.
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