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20-6
MSM66591/ML66592 User's Manual
Chapter 20 Interrupt Request Processing Function
[1]
Interrupt Request Flag Disable Register IRQD (IRQD0L, IRQD0H, IRQD1L, IRQD1H, IRQD2L)
The IRQD is a register that enables/disables the corresponding bit of the IRQ to be set
to "1" by the interrupt signal from each interrupt generation source. If a bit of IRQD is
"1", the corresponding bit of IRQ is not set, even if the corresponding interrupt genera-
tion source generated an interrupt request. If a bit of IRQD is "0", the corresponding bit
of IRQ is set to "1" by the interrupt request from the corresponding interrupt generation
source.
At reset (when the
RES
signal is input, the BRK instruction is executed, the watchdog
timer is overflown, or an operation code trap is generated), IRQD0L, IRQD0H, IRQD1L,
and IRQD1H become 00H, IRQD2L becomes C0H, and enable the corresponding bit of
IRQ to be set to "1" by an interrupt signal from each interrupt generation source.
[2]
Interrupt Request Register IRQ (IRQ0L, IRQ0H, IRQ1L, IRQ1H, IRQ2L)
IRQ becomes "1" synchronizing with the M1S1 signal if an interrupt signal is generated
from each interrupt generation source enabled by IRQD, and becomes "0" automatically
during an interrupt transition cycle if an interrupt is accepted.
A bit of IRQ can be set to "1" or "0" by the program.
At reset (when the
RES
signal is input, the BRK instruction is executed, the watchdog
timer is overflown, or an operation code trap is generated), IRQ0L, IRQ0H, IRQ1L, and
IRQ1H become 00H, and IRQ2L becomes C0H.
[3]
Interrupt Enable Register IE (IE0L, IE0H, IE1L, IE1H, IE2L)
The IE is a register that specifies an interrupt generation enable/disable independently.
If a bit of IE is "0", the corresponding interrupt generation is disabled. If a bit of IE is "1",
the corresponding interrupt generation is enabled.
At reset (when the
RES
signal is input, the BRK instruction is executed, the watchdog
timer is overflown, or an operation code trap is generated), IE0L, IE0H, IE1L, and IE1H
become 00H, and IE2L becomes C0H.
[4]
Master Interrupt Enable Flag (MIE)
The MIE is a 1-bit flag on PSW. MIE specifies enable/disable of all maskable interrupt
generation. If MIE is "0", all maskable interrupt generation is disabled. If MIE is "1", the
generation of all independently enabled interrupts are enabled.
[5]
Master Interrupt Priority Flag (MIPF)
The MIPF is a 1-bit flag assigned to bit 6 of NMICON. MIPF specifies valid/invalid of all
maskable interrupt priorities. If MIPF is "0", priority by IPX0 and IPX1 becomes invalid,
and interrupt generation is controlled only by IE and MIE. If MIPF is "1", four types of
priority, level 0–level 3, are given to all maskable interrupts by IPX0 and IPX1.
Summary of Contents for MSM66591
Page 15: ...Contents 12...
Page 17: ......
Page 18: ...Overview Chapter 1 1...
Page 19: ......
Page 30: ...Description of Pins Chapter 2 2...
Page 31: ......
Page 44: ...CPU Architecture Chapter 3 3...
Page 45: ......
Page 101: ...3 56 MSM66591 ML66592User sManual Chapter 3 CPU Architecture...
Page 102: ...CPU Control Functions Chapter 4 4...
Page 103: ......
Page 111: ...4 8 MSM66591 ML66592User sManual Chapter 4 CPU Control Functions...
Page 112: ...Memory Control Functions Chapter 5 5...
Page 113: ......
Page 117: ...5 4 MSM66591 ML66592User sManual Chapter 5 Memory Control Functions...
Page 118: ...Port Functions Chapter 6 6...
Page 119: ......
Page 152: ...Output Pin Control Pin OE Chapter 7 7...
Page 153: ......
Page 155: ...7 2 MSM66591 ML66592User sManual Chapter 7 Output Pin Control Pin OE...
Page 156: ...Clock Generation Circuit Chapter 8 8...
Page 157: ......
Page 160: ...Time Base Counter TBC Chapter 9 9...
Page 161: ......
Page 164: ...Watchdog Timer WDT Chapter 10 10...
Page 165: ......
Page 170: ...Flexible Timer FTM Chapter 11 11 11...
Page 171: ......
Page 213: ...11 42 MSM66591 ML66592User sManual Chapter 11 Flexible Timer FTM...
Page 214: ...General Purpose 8 Bit Timer Function Chapter 12 12...
Page 215: ......
Page 223: ...12 8 MSM66591 ML66592User sManual Chapter 12 General Purpose 8 Bit Timer Function...
Page 224: ...PWM Functions Chapter 13 13...
Page 225: ......
Page 244: ...Baud Rate Generator Functions Chapter 14 14...
Page 245: ......
Page 263: ...14 18 MSM66591 ML66592User sManual Chapter 14 Baud Rate Generator Functions...
Page 264: ...Serial Port Functions Chapter 15 15...
Page 265: ......
Page 348: ...A D Converter Functions Chapter 16 16...
Page 349: ......
Page 381: ...16 32 MSM66591 ML66592User sManual Chapter 16 A D Converter Functions...
Page 382: ...Transition Detector Functions Chapter 17 17...
Page 383: ......
Page 387: ...17 4 MSM66591 ML66592User sManual Chapter 17 Transition Detector Functions...
Page 388: ...Peripheral Functions Chapter 18 18...
Page 389: ......
Page 392: ...External Interrupt Request Function Chapter 19 19...
Page 393: ......
Page 396: ...Interrupt Request Processing Function Chapter 20 20...
Page 397: ......
Page 407: ...20 10 MSM66591 ML66592User sManual Chapter 20 Interrupt Request Processing Function...
Page 408: ...Bus Port Functions Chapter 21 21...
Page 409: ......
Page 413: ...21 4 MSM66591 ML66592User sManual Chapter 21 Bus Port Functions...
Page 414: ...Expansion Port Chapter 22 22...
Page 415: ......
Page 420: ...Serial Port with FIFO SCI5 Chapter 23 23...
Page 421: ......
Page 431: ...23 10 MSM66591 ML66592User sManual Chapter 23 Serial Port with FIFO SCI5...
Page 432: ...RAM Monitor Function Chapter 24 24...
Page 433: ......
Page 441: ...24 8 MSM66591 ML66592User sManual Chapter 24 RAM Monitor Function...
Page 442: ...25 Electrical Characteristics Chapter 25...
Page 443: ......
Page 458: ...Package Dimensions Chapter 26 26...
Page 459: ......
Page 461: ...26 2 MSM66591 ML66592User sManual Chapter 26 Package Dimensions...
Page 462: ...Revision History Chapter 27 27...
Page 463: ......
Page 465: ...27 2 MSM66591 ML66592User sManual Chapter 27 Revision History...