LPC1224_BO_SRM
Board v0.3
Fig 7 – P6 and P7 Connectors
3.3 Jumpers
The module has 2 configuration jumpers, numbered J3 and J4. Jumpers are common to all board types.
Fig 8 – Module Jumpers
Name
Description
J3 and J4 Selection between UART0 andUART1 for USB-to-UART bridge.
Table
4 – Module Jumpers Description
3.3.1 J3 and J4 jumpers
J3 and J4 jumpers are used to connect UART0 or UART1 pins to the FTDI FT230XS USB-to-UART bridge.
When the jumpers are on the top two pins for each jumper, then UART0 is connected to the USB-to-UART
bridge. This position must be used for binary upload in ISP mode.
When the jumpers are on the bottom pins for each jumper, then UART1 is connected to the USB-to-UART
bridge.
It is possible to operate the board without jumpers. Then the UAS-to-UART is not connected to the micro-
controller.
Note
: It is not mandatory for the jumpers to be on the same position on J3 and J4.
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