C8051F336_08 Datasheet, PDF (128/227 Pages) Silicon Laboratories – Mixed-Signal Byte-Programmable EPROM MCU

C8051F336/7/8/9
SFR Definition 20.2. XBR1: Port I/O Crossbar Register 1
Bit
7
6
5
4
3
2
1
0
Name ^{WEAKPUD XBARE}
T1E
T0E
ECIE
PCA0ME[1:0]
Type
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
Reset
0
0
0
0
0
0
0
0
SFR Address = 0xE2
Bit
Name
Function
7 WEAKPUD _{Port I/O Weak Pullup Disable.}
0: Weak Pullups enabled (except for Ports whose I/O are configured for analog
mode).
1: Weak Pullups disabled.
6
XBARE _{Crossbar Enable.}
0: Crossbar disabled.
1: Crossbar enabled.
5
T1E
T1 Enable.
0: T1 unavailable at Port pin.
1: T1 routed to Port pin.
4
T0E
T0 Enable.
0: T0 unavailable at Port pin.
1: T0 routed to Port pin.
3
ECIE
PCA0 External Counter Input Enable.
0: ECI unavailable at Port pin.
1: ECI routed to Port pin.
2 UNUSED Unused. Read = 0b; Write = Don’t Care.
1:0 PCA0ME[1:0] _{PCA Module I/O Enable Bits.}
00: All PCA I/O unavailable at Port pins.
01: CEX0 routed to Port pin.
10: CEX0, CEX1 routed to Port pins.
11: CEX0, CEX1, CEX2 routed to Port pins.
128
Rev.1.0