C8051F340/1/2/3/4/5/6/7

SFR Definition 15.1. XBR0: Port I/O Crossbar Register 0

R/W

 

R/W

R/W

R/W

R/W

R/W

R/W

R/W

CP1AE

 

CP1E

CP0AE

 

CP0E

 

SYSCKE

SMB0E

SPI0E

URT0E

Bit7

 

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Bit7:

CP1AE: Comparator1 Asynchronous Output Enable

 

 

 

0: Asynchronous CP1 unavailable at Port pin.

 

 

 

 

1: Asynchronous CP1 routed to Port pin.

 

 

 

Bit6:

CP1E: Comparator1 Output Enable

 

 

 

 

 

0: CP1 unavailable at Port pin.

 

 

 

 

 

1: CP1 routed to Port pin.

 

 

 

 

 

 

Bit5:

CP0AE: Comparator0 Asynchronous Output Enable

 

 

 

0: Asynchronous CP0 unavailable at Port pin.

 

 

 

 

1: Asynchronous CP0 routed to Port pin.

 

 

 

Bit4:

CP0E: Comparator0 Output Enable

 

 

 

 

 

0: CP0 unavailable at Port pin.

 

 

 

 

 

1: CP0 routed to Port pin.

 

 

 

 

 

 

Bit3:

SYSCKE: /SYSCLK Output Enable

 

 

 

 

 

0: /SYSCLK unavailable at Port pin.

 

 

 

 

 

1: /SYSCLK output routed to Port pin.

 

 

 

Bit2:

SMB0E: SMBus I/O Enable

 

 

 

 

 

0: SMBus I/O unavailable at Port pins.

 

 

 

 

1: SMBus I/O routed to Port pins.

 

 

 

 

Bit1:

SPI0E: SPI I/O Enable

 

 

 

 

 

 

 

0: SPI I/O unavailable at Port pins.

 

 

 

 

 

1: SPI I/O routed to Port pins.

 

 

 

 

Bit0:

URT0E: UART0 I/O Output Enable

 

 

 

 

 

0: UART0 I/O unavailable at Port pins.

 

 

 

 

1: UART0 TX0, RX0 routed to Port pins P0.4 and P0.5.

 

 

Reset Value

00000000

SFR Address:

0xE1

152

Rev. 0.5

Page 152
Image 152
Silicon Laboratories C8051F347, C8051F346, C8051F341, C8051F343 SFR Definition 15.1. XBR0 Port I/O Crossbar Register