Motorola ColdFire MCF5281 - Manual (Page 522)

General Purpose I/O Module
26-22 Freescale Semiconductor
26.3.2.11 Port EH/EL Pin Assignment Register (PEHLPAR)
The PEHLPAR controls the pin function of ports EH and EL.
NOTE
Port EH is not available on the MCF5214 and MCF5216.
The PEHLPAR is read/write accessible.
Table 26-14. PASPAR Field Descriptions
Bits Name Description
15–12 — Reserved, should be cleared.
11–10 PASPA5 Port AS pin assignment 5. These bits configure the AS5 pin for its
primary function (EMDIO), alternate function (URXD2), or digital I/O.
0x Port AS5 pin configured for digital I/0
10 Port AS5 pin configured for alternate function (URXD2)
11 Port AS5 pin configured for primary function (EMDIO)
Note: Setting 11 is reserved for the MCF5214 and MCF5216.
9-8 PASPA4 Port AS pin assignment 4. These bits configure the AS4 pin for its
primary function (EMDC), alternate function (UTXD2), or digital I/O.
0x Port AS4 pin configured for digital I/0
10 Port AS4 pin configured for alternate function (UTXD2)
11 Port AS4 pin configured for primary function (EMDC)
Note: Setting 11 is reserved for the MCF5214 and MCF5216.
7-6 PASPA3 Port AS pin assignment 3. These bits configure the AS3 pin for its
primary function (CANRX), alternate function (URXD2), or digital I/O.
0x Port AS3 pin configured for digital I/0
10 Port AS3 pin configured for alternate function (URXD2)
11 Port AS3 pin configured for primary function (CANRX)
5-4 PASPA2 Port AS pin assignment 2. These bits configure the AS2 pin for its
primary function (CANTX), alternate function (UTXD2), or digital I/O.
0x Port AS2 pin configured for digital I/0
10 Port AS2 pin configured for alternate function (UTXD2)
11 Port AS2 pin configured for primary function (CANTX)
3-2 PASPA1 Port AS pin assignment 1. These bits configure the AS1 pin for its
primary function (SDA), alternate function (URXD2), or digital I/O.
0x Port AS1 pin configured for digital I/0
10 Port AS1 pin configured for alternate function (URXD2)
11 Port AS1 pin configured for primary function (SDA)
1-0 PASPA0 Port AS pin assignment 0. These bits configure the AS0 pin for its
primary function (SCL), alternate function (UTXD2), or digital I/O.
0x Port AS0 pin configured for digital I/0
10 Port AS0 pin configured for alternate function (UTXD2)
11 Port AS0 pin configured for primary function (SCL)
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3