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HD64F3048F16 Datasheet, PDF (862/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents
Appendix B Internal I/O Register
BRCR—Bus Release Control Register
H'F3
Bus controller
Bit
7
A23E
Modes Initial value 1
1, 2,
5, 7 Read/Write 
Modes Initial value 1
3, 4, 6 Read/Write R/W
6
A22E
1

1
R/W
5
4
3
2
1
0
A21E




BRLE
1
1
1
1
1
0





R/W
1
1
1
1
1
0
R/W




R/W
Bus release enable
0 The bus cannot be released to an external device
1 The bus can be released to an external device
Address 23 to 21 enable
0 Address output
1 Other input/output
ISCR—IRQ Sense Control Register
H'F4 Interrupt controller
Bit
Initial value
Read/Write
7

0
R/W
6
5
4
3
2
1
0
 IRQ5SC IRQ4SC IRQ3SC IRQ2SC IRQ1SC IRQ0SC
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
IRQ5 to IRQ0 sense control
0 Interrupts are requested when IRQ5 to IRQ0 inputs are low
1 Interrupts are requested by falling-edge input at IRQ5 to IRQ0
Rev. 3.00 Sep 27, 2006 page 834 of 872
REJ09B0325-0300