Freescale Semiconductor MCF54455 Reference Manual page 377

Pin Multiplexing and Control
16.3.5.9 UART Pin Assignment Register (PAR_UART)
The PAR_UART register controls the functions of the UART pins.
Address: 0xFC0A_4069 (PAR_UART)
7
R
PAR_
U1CTS
W
Reset: 0
Field
7 U1CTS pin assignment.
PAR_U1CTS 0 U1CTS pin configured for GPIO
1 U1CTS pin configured for UART1 clear-to-send function
6 U1RTS pin assignment.
PAR_U1RTS 0 U1RTS pin configured for GPIO
1 U1RTS pin configured for UART1 request-to-send function
5 U1RXD pin assignment.
PAR_U1RXD 0 U1RXD pin configured for GPIO
1 U1RXD pin configured for UART1 receive data function
4 U1TXD pin assignment.
PAR_U1TXD 0 U1TXD pin configured for GPIO
1 U1TXD pin configured for UART1 transmit data function
3 U0CTS pin assignment.
PAR_U0CTS 0 U0CTS pin configured for GPIO
1 U0CTS pin configured for UART0 clear-to-send function
2 U0RTS pin assignment.
PAR_U0RTS 0 U0RTS pin configured for GPIO
1 U0RTS pin configured for UART0 request-to-send function
1 U0RXD pin assignment.
PAR_U0RXD 0 U0RXD pin configured for GPIO
1 U0RXD pin configured for UART0 receive data function
0 U0TXD pin assignment.
PAR_U0TXD 0 U0TXD pin configured for GPIO
1 U0TXD pin configured for UART0 transmit data function
16-32
6 5
PAR_ PAR_ PAR_
U1RTS U1RXD U1TXD
0 0 0
Figure 16-42. UART Pin Assignment (PAR_UART)
Table 16-17. PAR_UART Field Descriptions
4 3 2
PAR_ PAR_
U0CTS U0RTS
0 0
Description
Access: User read/write
1 0
PAR_ PAR_
U0RXD U0TXD
0 0
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