M3727GM6 Datasheet, PDF (123/129 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M3727GM6/M8–XXXSP/FP M37272E8SP/FP
Address 00FB16
CPU Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
1 1 0 0 CPU mode register (CM) [Address 00FB16]
B
Name
0, 1 ^{Processor mode bits}
(CM0, CM1)
Functions
b1 b0
0 0: Single-chip mode
0 1:
1 0: Not available
1 1:
After reset R W
0 RW
2 ^{Stack page selection 0: 0 page}
bit (CM2) (See note) 1: 1 page
1 RW
3, 4 Fix these bits to “1.”
1 RW
5 XCOUT drivability
selection bit (CM5)
0: LOW drive
1: HIGH drive
6 Main Clock (XIN–XOUT) _{0: Oscillating}
stop bit
1: Stopped
(CM6)
1 RW
0 RW
7 Internal system clock _{0: XIN–XOUT selected}
0 RW
selection bit
(high-speed mode)
(CM7)
1: XCIN–XCOUT selected
(high-speed mode)
Note: This bit is set to “1” after the reset release.
Address 00FC16
Interrupt Request Register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 1 (IREQ1) [Address 00FC16]
B
Name
Functions
0 Timer 1 interrupt
request bit (TM1R)
1 Timer 2 interrupt
request bit (TM2R)
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
2 Timer 3 interrupt
0 : No interrupt request issued
request bit (TM3R) 1 : Interrupt request issued
3 Timer 4 interrupt
0 : No interrupt request issued
request bit (TM4R) 1 : Interrupt request issued
4 OSD interrupt request 0 : No interrupt request issued
bit (OSDR)
1 : Interrupt request issued
5 VSYNC interrupt
0 : No interrupt request issued
request bit (VSCR) 1 : Interrupt request issued
6 ^{INT3 external interrupt} 0 : No interrupt request issued
request bit (VSCR) 1 : Interrupt request issued
7 Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is “0.”
After reset R W
0 R✽
0 R✽
0 R✽
0 R✽
0 R✽
0 R✽
0 R✽
0 R—
✽: “0” can be set by software, but “1” cannot be set.
Rev.1.00 Apr 01, 2001 page 123 of 127
REJ03B0132-0100Z