Datasheet

Section 8 I/O Ports
Rev. 4.00 Sep 27, 2006 page 258 of 1130
REJ09B0327-0400
Pin Selection Method and Pin Functions
P83 The pin function is switched as shown below according to bit P83DDR.
P83DDR 0 1
Pin function P83 input pin P83 output pin
P82/HIFSD The pin function is switched as shown below according to the combination of
operating mode, bit SDE in SYSCR2, and bit P82DDR.
Operating
mode
Not slave mode Slave mode
SDE — 01
P82DDR0101—
Pin function P82
input pin
P82
output pin
P82
input pin
P82
output pin
HIFSD
input pin
P81/GA20/CS2 The pin function is switched as shown below according to the combination of
operating mode, bit CS2E in SYSCR, bit FGA20E in HICR of the HIF, and bit
P81DDR.
Operating
mode
Not slave mode Slave mode
FGA20E — 01
CS2E — 01—
P81DDR0101— 01
Pin function P81
input
pin
P81
output
pin
P81
input
pin
P81
output
pin
CS2
input
pin
P81
input
pin
GA20
output
pin
This pin should be used as the GA20 output pin or CS2 input pin only in mode
2 or 3 (EXPE = 0).
P80/HA0 The pin function is switched as shown below according to the combination of
operating mode and bit P80DDR.
Operating
mode
Not slave mode Slave mode
P80DDR 0 1 —
Pin function P80 input pin P80 output pin HA0 input pin