Silicon Laboratories UDP C8051F960/Si1020 User Manual page 13

4.11.11. EZRadio GPIO Signals
When using a Si1020 UPPI Pico Board, the four EZRadioPRO GPIO signals connect to the SMA connectors on
the motherboard.
GPIO_0 connects to EZRP_TX_DATA_IN via R20. This signal supports direct mode TX input data from an external
source using the SMA connector.
GPIO_1 connects to EZRP_RX_DOUT via R21. This signal supports direct mode RX data out of the SMA
connector. Normally, the RX data out is used with the RX clock out.
GPIO_2 connects to EZRP_RX_CLK_OUT via R22. This signal supports direct mode RX data out of the SMA
connector.
ANT_A connects to EZR_CLK_IN using R23. This provides a connection to the forth SMA connector. Cut the trace
on R23 when using an external 10 MHz clock with EZRadio.
4.11.12. EMIF Connections
Some of the EMIF lines also connect to the 40-pin radio card connector. EMIF_A15/- connects to GPIO_2, and
EMIF_A14/- connects to GPIO_3. Disconnect these signals when using the EMIF in 16-bit address non-
multiplexed mode.
Table 2 describes the UPMP-F960-EMIF MCU card's EMIF connections.
MCU Pin
P3.5
P3.6
P3.7
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
P6.0
P6.1
P6.2
Downloaded from Elcodis.com electronic components distributor
Table 2. MCU EMIF Connections
EMIF Configurations
Non-Multiplexed Multiplexed
16-bit 8-bit 16-bit
ALE
/RD /RD /RD
/WR /WR /WR
A8
A9
A10
A11
A12
A13
A14
A15
A0 A0 A8
A1 A1 A9
A2 A2 A10
A3 A3 A11
A4 A4 A12
A5 A5 A13
A6 A6 A14
A7 A7 A15
D0 D0 AD0
D1 D1 AD1
D2 D2 AD2
UPMP-F960-EMIF
MCU Card Signal
Name
8-bit
ALE EMIF_ALE
/RD EMIF_RD
/WR EMIF_WR
EMIF_A8/-
EMIF_A9/-
EMIF_A10/-
EMIF_A11/-
EMIF_A12/-
EMIF_A13/-
EMIF_A14/-
EMIF_A15/-
EMIF_A0/A8/-
EMIF_A1/A9/-
EMIF_A2/A10/-
EMIF_A3/A11/-
EMIF_A4/A12/-
EMIF_A5/A13/-
EMIF_A6/A14/-
EMIF_A7/A15/-
AD0 EMIF_D0/AD0
AD1 EMIF_D1/AD1
AD2 EMIF_D2/AD1
Rev. 0.1
UDP Motherboard
Signal Name
EMIF_ALE
EMIF_OEB
EMIF_WRB
EMIF_A16
EMIF_A17
EMIF_A18
EMIF_A19
EMIF_A20
EMIF_A21
EMIF_A22
EMIF_A23
EMIF_A8
EMIF_A9
EMIF_A10
EMIF_A11
EMIF_A12
EMIF_A13
EMIF_A14
EMIF_A15
EMIF_A0
EMIF_A1
EMIF_A2
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