Motorola MCF5281 ユーザーズマニュアル

26-24

MOTOROLA

 

The PUAPAR controls the pin function of port UA.

3-2

PTDPA1

Port TD pin assignment 1. This field configures the port TD1 pin for its primary 
function (DTIN0), alternate 1 function (UCTS1), alternate 2 function (UCTS0) or 
digital I/O.
00 Port TD1 pin configured for digital I/O
01 Port TD1 pin configured for alternate 2 function (UCTS0)
10 Port TD1 pin configured for alternate 1 function (UCTS1)
11 Port TD1 pin configured for primary function (DTIN0)

1-0

PTDPA0

Port TD pin assignment 0. This field configures the port TD0 pin for its primary 
function (DTOUT0), alternate 1 function (UCTS1), alternate 2 function (UCTS0) 
or digital I/O.
00 Port TD0 pin configured for digital I/O
01 Port TD0 pin configured for alternate 2 function (UCTS0)
10 Port TD0 pin configured for alternate 1 function (UCTS1)
11 Port TD0 pin configured for primary function (DTOUT0)

7

4

3

2

1

0

Field

—

PUAPA3

PUAPA2

PUAPA1

PUAPA0

Reset

0000_0000

R/W:

R

R/W

Address

IPSBAR + 0x10_005C

7–4

—

Reserved, should be cleared.

3

PUAPA3

Port UA pin assignment 3. This bit configures the port UA3 pin for its 
primary function (URXD1) or digital I/O.
1 Port UA3 pin configured for primary function (URXD1) 
0 Port UA3 pin configured for digital I/O

2

PUAPA2

Port UA pin assignment 2. This bit configures the port UA2 pin for its 
primary function (UTXD1) or digital I/O.
1 Port UA2 pin configured for primary function (UTXD1) 
0 Port UA2 pin configured for digital I/O

1

PUAPA1

Port UA pin assignment 1. This bit configures the port UA1 pin for its 
primary function (URXD0) or digital I/O.
1 Port UA1 pin configured for primary function (URXD0) 
0 Port UA1 pin configured for digital I/O

0

PUAPA0

Port UA pin assignment 0. This bit configures the port UA0 pin for its 
primary function (UTXD0) or digital I/O.
1 Port UA0 pin configured for primary function (UTXD0) 
0 Port UA0 pin configured for digital I/O