Rev.6.00 Oct.28.2004 page 335
of 1016
REJ09B0138-0600H
9.14.3
Pin Functions
Port G pins also function as bus control signal output pins (
CS0
to
CS3
, and
CAS
). The pin functions are different in mode
7, and modes 4 to 6. Port G pin functions are shown in table 9-26.
Table 9-26 Port G Pin Functions
Pin
Selection Method and Pin Functions
PG
4
/
CS0
The pin function is switched as shown below according to the operating mode
and bit PG4DDR.
Operating
Mode
Mode 7
*
Modes 4 to 6
*
PG4DDR
0
1
0
1
Pin function
PG
4
input pin PG
4
output pin PG
4
input pin
CS0
output pin
Note:
*
Modes 6 and 7 are provided in the on-chip ROM version only.
PG
3
/
CS1
The pin function is switched as shown below according to the operating mode
and bit PG3DDR.
Operating
Mode
Mode 7
*
Modes 4 to 6
*
PG3DDR
0
1
0
1
Pin function
PG
3
input pin PG
3
output pin PG
3
input pin
CS1
output pin
Note:
*
Modes 6 and 7 are provided in the on-chip ROM version only.
PG
2
/
CS2
The pin function is switched as shown below according to the operating mode
and bit PG2DDR.
Operating
Mode
Mode 7
*
Modes 4 to 6
*
PG2DDR
0
1
0
1
Pin function
PG
2
input pin PG
2
output pin PG
2
input pin
CS2
output pin
Note:
*
Modes 6 and 7 are provided in the on-chip ROM version only.
PG
1
/
CS3
The pin function is switched as shown below according to the operating mode
and bit PG1DDR.
Operating
Mode
Mode 7
*
Modes 4 to 6
*
PG1DDR
0
1
0
1
Pin function
PG
1
input pin PG
1
output pin PG
1
input pin
CS3
output pin
Note:
*
Modes 6 and 7 are provided in the on-chip ROM version only.
PG
0
/
CAS
The pin function is switched as shown below according to the combination of
the operating mode and bits RMTS2 to RMTS0 and PG0DDR.
Operating
Mode
Mode 7
*
Modes 4 to 6
*
RMTS2 to
RMTS0
—
B'000,
B'100 to B'111
B'001 to
B'011
PG0DDR
0
1
0
1
—
Pin function
PG
0
input
pin
PG
0
output
pin
PG
0
input
pin
PG
0
output
pin
CAS
output
Note:
*
Modes 6 and 7 are provided in the on-chip ROM version only.
Summary of Contents for ZTAT H8S/2357F
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