Motorola MCF5281 用户手册

26-16

MOTOROLA

 

The reset values for all bits and fields in PEPAR are shown in Table 26-10.

6

PEPA3

Port E pin assignment 3 
This bit configures the port E3 pin for its alternate function (SYNCA) or 
digital I/O.
1 Port E3 pin configured for alternate function (SYNCA)
0 Port E3 pin configured for digital I/O
NOTE: The SIZ1 primary function on the port E3 pin is enabled by the 
SZEN bit in the CCR register. Please refer to the Chapter 30, “Chip 
Configuration Module (CCM) for more information on chip configuration 
and the SZEN bit.

4

PEPA2

Port E pin assignment 2
This bit configures the port E2 pin for its alternate function (SYNCB) or 
digital I/O.
1 Port E2 pin configured for alternate function (SYNCB)
0 Port E2 pin configured for digital I/O
NOTE: The SIZ0 primary function on the port E2 pin is enabled by the 
SZEN bit in the CCR register. Please refer to the Chapter 30, “Chip 
Configuration Module (CCM),” for more information on chip 
configuration and the SZEN bit.

3–2

PEPA1

Port E pin assignment 1.
This two-bit field in PEPAR[3:2] configures the port E1 pin for its primary 
function (TS), alternate function (SYNCA), or digital I/O. 
0x  Port E1 pin configured for digital I/O
10 Port E1 pin configured for alternate function (SYNCA)
11 Port E1 pin configured for primary function (TS)

1-0

PEPA0

Port E pin assignment 0.
This two-bit field in PEPAR[1:0] configures the port E0 pin for its primary 
function (TIP), alternate function (SYNCB), or digital I/O.
0x Port E0 pin configured for digital I/O
10 Port E0 pin configured for alternate function (SYNCB)
11 Port E0 pin configured for primary function (TIP)

PEPAn Bits (n = 

PEPAn Fields

(n = 0,1)

Master mode

1

11

Single chip mode

0

00