Port Function Control Register 4 (Pfcr4) - Renesas H8SX/1650 Hardware Manual

Section 8 I/O Ports
8.3.4

Port Function Control Register 4 (PFCR4)

PFCR4 enables/disables the address output.
Bit 7
Bit Name A23E
Initial Value 0
R/W R/W
Bit Bit Name
7 A23E
6 A22E
5 A21E

4 to 0
Rev.2.00 Jun. 28, 2007 Page 296 of 666
REJ09B0311-0200
6 5
A22E A21E
0 0
R/W R/W
Initial
Value R/W Description
0 R/W Address A23 Enable
Enables/disables the address output (A23)
0: Disables the A23 output
1: Enables the A23 output
0 R/W Address A22 Enable
Enables/disables the address output (A22)
0: Disables the A22 output
1: Enables the A22 output
0 R/W Address A21 Enable
Enables/disables the address output (A21)
0: Disables the A21 output
1: Enables the A21 output
All 1 R/W Reserved
These bits are always read as 1. The write value should
always be 1.
4 3
 
1 1
R/W R/W
2 1
 
1 1
R/W R/W
0

1
R/W