Si1000/1/2/3/4/5
SFR Definition 21.2. XBR1: Port I/O Crossbar Register 1
Bit
7
6
SPI1E
R/W
0
5
4
3
ECIE
R/W
0
2
1
0
Name
Type
Reset
T1E
R/W
0
T0E
R/W
0
PCA0ME[2:0]
R/W
0
R/W
0
R/W
0
R/W
0
SFR Page = 0x0; SFR Address = 0xE2
Bit
Name
Function
7
Unused Read = 0b; Write = Don’t Care.
6
SPI1E
EZRadioPRO Serial Interface (SPI1) Enable.
0: EZRadioPRO peripheral unavailable.
1: SCK (for EZRadioPRO) routed to P1.0.
MISO (for EZRadioPRO) routed to P1.1.
MOSI (for EZRadioPRO) routed to P1.2.
NSS (for EZRadioPRO) routed to P1.3 only if SPI1 is configured to 4-wire mode.
Note: When communicating with EZRadioPRO, the SPI1 should be configured to 3-
wire mode and P1.4 should be used as a standard Port I/O pin to control NSS.
5
4
T1E
T0E
Timer1 Input Enable.
0: T1 input unavailable at Port pin.
1: T1 input routed to Port pin.
Timer0 Input Enable.
0: T0 input unavailable at Port pin.
1: T0 input routed to Port pin.
3
ECIE
PCA0 External Counter Input (ECI) Enable.
0: PCA0 external counter input unavailable at Port pin.
1: PCA0 external counter input routed to Port pin.
2:0
PCA0ME PCA0 Module I/O Enable.
000: All PCA0 I/O unavailable at Port pin.
001: CEX0 routed to Port pin.
010: CEX0, CEX1 routed to Port pins.
011: CEX0, CEX1, CEX2 routed to Port pins.
100: CEX0, CEX1, CEX2 CEX3 routed to Port pins.
101: CEX0, CEX1, CEX2, CEX3, CEX4 routed to Port pins.
110: CEX0, CEX1, CEX2, CEX3, CEX4, CEX5 routed to Port pins.
111: Reserved.
Note: SPI1 can be assigned either 3 or 4 Port I/O pins.
Rev. 1.0
215
SILICON [ SILICON ]
