M37221M4H_15 Datasheet, PDF (23/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Interrupt Request Register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 1 (IREQ1) [Address 00FC16]
B
Name
Functions
After reset R W
0 Timer 1 interrupt
request bit (TM1R)
0 : No interrupt request issued 0
1 : Interrupt request issued
R✽
1 Timer 2 interrupt
request bit (TM2R)
0 : No interrupt request issued 0
1 : Interrupt request issued
R✽
2 Timer 3 interrupt
0 : No interrupt request issued 0
request bit (TM3R) 1 : Interrupt request issued
R✽
3 Timer 4 interrupt
request bit (TM4R)
0 : No interrupt request issued 0
1 : Interrupt request issued
R✽
4 _{OSD interrupt request} 0 : No interrupt request issued ₀
bit (CRTR)
1 : Interrupt request issued
R✽
5 VSYNC interrupt
0 : No interrupt request issued 0 R ✽
request bit (VSCR) 1 : Interrupt request issued
6 Multi-master I²C-BUS interface 0 : No interrupt request issued 0 R ^✽
interrupt request bit (IICR) 1 : Interrupt request issued
7 INT3 external interrupt
request bit (IT3R)
0 : No interrupt request issued 0
1 : Interrupt request issued
R✽
✽: “0” can be set by software, but “1” cannot be set.
Fig. 8.3.2 Interrupt Request Register 1
Interrupt Request Register 2
b7 b6 b5 b4 b3 b2 b1 b0
0
Interrupt request register 2 (IREQ2) [Address 00FD16]
B
Name
Functions
After reset R W
0 INT1 external interrupt 0 : No interrupt request issued _{0 R ✽}
request bit (IT1R)
1 : Interrupt request issued
1 INT2 external interrupt 0 : No interrupt request issued 0 _R ✽
request bit (IT2R)
1 : Interrupt request issued
2 Serial I/O interrupt _{0 : No interrupt request issued 0 R} ✽
request bit (S1R) _{1 : Interrupt request issued}
3 Nothing is assigned. This bit is a write disable bit. 0 R ^—
When this bit is read out, the value is “0.”
4 f(XIN)/4096 interrupt 0 : No interrupt request issued 0 R ✽
request bit (MSR) _{1 : Interrupt request issued}
5, 6 Nothing is assigned. These bits are write disable bits. 0 R ^—
When these bits are read out, the values are “0.”
7 Fix this bit to “0.”
0 _RW
✽: “0” can be set by software, but “1” cannot be set.
Fig. 8.3.3 Interrupt Request Register 2
Rev.1.00 Oct 01, 2002 page 21 of 110
REJ03B0134-0100Z