Texas Instruments SWRU294, User Manual, Page: 21 / 57

SWRU294
Page 21/40
6.10 EM Connectors
The EM connectors, shown in Figure 12, are used for connecting an EM board to the SmartRF
TrxEB. The connectors RF1 and RF2 are the main interface and are designed to inhibit incorrect
mounting of the EM board. The pin-out of the EM connectors is given in Table 7 and Table 8.
Many EM connector pins are accessible from both the EM I/O breakout headers (see section
6.11.1) and the MSP430 I/O breakout (section 6.11.2).
Figure 12
– SmartRF TrxEB EM connectors RF1 and RF2
EM pin Signal name Description
I/O breakout
EM MSP430
RF1.1 GND Ground P7.20
RF1.2 NC Not connected
RF1.3 P1_4 / RF_SPI1_CS_N GPIO / Alternative EM SPI Clock P7.5 P1.4
RF1.4 P1_1 GPIO signal to EM board P7.2 P1.1
RF1.5 P8_2 GPIO signal to EM board P7.13 P8.2
RF1.6 P1_5 GPIO signal to EM board P7.6 P1.5
RF1.7 RF_UART_TXD / RF_SPI1_MISO 2-line UART to EM board / Alt. SPI P7.9 P3.4 / P5.4
RF1.8 P25A_1 GPIO signal P25A.1
RF1.9 RF_UART_RXD / RF_SPI1_MOSI 2-line UART to EM board / Alt. SPI P7.7 P3.5 / P3.7
RF1.10 P1_7 GPIO signal to EM board P7.8 P1.7
RF1.11 P8_3 GPIO signal to EM board P7.15 P8.3
RF1.12 P1_3 GPIO signal to EM board P7.4 P1.3
RF1.13 P25A_2 GPIO signal P25A.2
RF1.14 RF_SPI0_CS_N EM SPI Chip Select P7.14 P3.0
RF1.15 P8_4 GPIO signal to EM board P7.17 P8.4
RF1.16 RF_SPI0_SCLK EM SPI Clock P7.12 P3.3
RF1.17 P8_5 GPIO signal to EM board P7.19 P8.5
RF1.18 RF_SPI0_MOSI EM SPI MOSI P7.16 P3.1
RF1.19 GND Ground P7.20
RF1.20 RF_SPI0_MISO EM_SPI_MISO P7.18 P3.2
Table 7
– EM connector RF1 pin-out