Figure 19.8. XBR1: Port I/O Crossbar Register 1
R/W
R/W
SYSCKE
T2EXE
Bit7
Bit6
Bit7:
SYSCKE: /SYSCLK Output Enable Bit.
0: /SYSCLK unavailable at Port pin.
1: /SYSCLK (divided by 1, 2, 4, or 8) routed to Port pin. divide factor is determined by the
CLKDIV1-0 bits in register CLKSEL (See
Bit6:
T2EXE: T2EX Input Enable Bit.
0: T2EX unavailable at Port pin.
1: T2EX routed to Port pin.
Bit5:
T2E: T2 Input Enable Bit.
0: T2 unavailable at Port pin.
1: T2 routed to Port pin.
Bit4:
INT1E: /INT1 Input Enable Bit.
0: /INT1 unavailable at Port pin.
1: /INT1 routed to Port pin.
Bit3:
T1E: T1 Input Enable Bit.
0: T1 unavailable at Port pin.
1: T1 routed to Port pin.
Bit2:
INT0E: /INT0 Input Enable Bit.
0: /INT0 unavailable at Port pin.
1: /INT0 routed to Port pin.
Bit1:
T0E: T0 Input Enable Bit.
0: T0 unavailable at Port pin.
1: T0 routed to Port pin.
Bit0:
CP1E: CP1 Output Enable Bit.
0: CP1 unavailable at Port pin.
1: CP1 routed to Port pin.
R/W
R/W
R/W
T2E
INT1E
T1E
Bit5
Bit4
Bit3
Section "15. OSCILLATORS" on page
Rev. 1.2
C8051F120/1/2/3/4/5/6/7
R/W
R/W
INT0E
T0E
CP1E
Bit2
Bit1
SFR Address:
R/W
Reset Value
00000000
Bit0
0xE2
SFR Page:
F
173).
225
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