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VersaKit-30xx
P1, P2 - RS-232 DB9 Connectors for Serial Ports
The development board includes a 2-channel RS-232 transceiver and two DB9 connectors to access the VRS51L3074's
UARTs.
P1 – Provides access to VRS51L3074 UART 0
P2 – Provides access to VRS51L3074 UART 1
A set of four jumpers enables the P1 and P2 connectors to be assigned to the UARTs. A set of four headers (JP2, JP3,
JP4, JP5) located directly below the P1 DB9 Connector configures the connection between the VRS51L3074, the RS-232
transceiver and DB9 connectors P1 and P2. Several configurations are possible with different header settings, but the two
configurations below are the most typical:
Typical Configuration 1
JP2 1-2 VRS51L3074 UART1 P1.2-RXD1 routed on P1
JP3 1-2 VRS51L3074 UART1 P1.3-TXD1 routed on P1
JP4 1-2 VRS51L3074 UART0 P3.0-RXD0 routed on P2
JP5 1-2 VRS51L3074 UART0 P3.1-TXD0 routed on P2
2.4
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1
1
1
1
Figure 4: Typical configurations for headers and serial ports
Typical Configuration 2
JP2 2-3 VRS51L3074 UART1 RXD1a routed on P1 (alternate UART1 pins)
JP3 2-3 VRS51L3074 UART1 TXD1a routed on P1 (alternate UART1 pins)
JP4 2-3 VRS51L3074 UART0 P2.4-RXD0a routed on P2 (alternate UART1 pins)
JP5 2-3 VRS51L3074 UART0 P2.3-TXD0a routed on P2 (alternate UART1 pins)
1
1
1
1
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