Silicon Laboratories UDP C8051F960/Si1020 User Manual page 11

4.11. UPMP-F960-EMIF Board Default and Optional Connections
The UPMP-F960-EMIF MCU card has many default and optional connections for use with different radios and the
UDP motherboard. The default connections have shorting jumpers consisting of a 603 resistor footprint with a trace
between the pads. To disconnect a default connection, cut the trace between the pads. To reconnect, install a 0 
603 resistor or connect the two pads with solder. The optional connections are non-populated (no-pop) resistor
footprints. To connect, install a 0  603 resistor or connect the two pads with solder.
When using the Si1020 UPPI Pico Board, some of the MCU port pins connect to EZRadioPRO port pins by default.
Note that plugging the UPPI Pico Board into the MCU card will connect some pins together.
Table 1 shows a summary of the default and optional connections for each pin.
MCU Pin
P0.0
P0.1
P0.2
P0.3
P0.4/TX
P0.5/RX
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P2.0/SCK1
P2.1/MISO1
P2.2/MOSI1
P2.3/NSS1
P2.4
P2.5
P2.6
P2.7
P3.0
P3.1
Downloaded from Elcodis.com electronic components distributor
Table 1. MCU Pin Functions
MCU Card Function
Default Optional
TX
RX
PC0
PC1
XTAL3
XTAL4
POT
GPIO_1
GPIO_0
POT_EN
SW1/LED1
SW2/LED2
UPMP-F960-EMIF
UDP Motherboard Signal
Default
SPI_LCD_SCK
SPI_LCD_MISO
SPI_LCD_MOSI
VREF SPI_LCD_NSS
CTS EZR_I2C_SDA
RTS EZR_I2C_SCL
EZRP_RX_DOUT/
EZRP_GPI0_1
EZRP_NIRQ
EZRP_SDN
EZRP_SCK
EZRP_MISO
EZRP_MOSI
EZRP_NSS
PIEZO
EZRP_TX_DATA_IN/
EZRP_GPIO_0
SPI_LCD_A0
Rev. 0.1
Optional
EBID_SCK
EBID_MISO
EBID_MOSI
GPIO2
EZR_ARSSI
EZR_FFIT
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