Section 9 Interrupt Controller (INTC)
Rev. 1.00 Oct. 01, 2007 Page 233 of 1956
REJ09B0256-0100
Section 9 Interrupt Controller (INTC)
The interrupt controller (INTC) determines the priority of interrupt sources and controls interrupt
requests to the CPU (SH-4A). The INTC has a register that sets the priority of each interrupt and
interrupt requests are processed according to the priority set in this register by the user.
9.1 Features
SH-4 compatible specifications
•
Fifteen levels of external interrupt priority can be set
By setting the interrupt priority registers, the priorities of external interrupts can be selected
from 15 levels for individual request sources.
•
NMI noise canceller function
An NMI input-level bit indicates the NMI pin state. By reading this bit in the interrupt
exception handling routine, the pin state can be checked, enabling it to be used as a noise
canceller.
•
NMI request masking when the block bit (BL) in the status register (SR) is set to 1
Whether to mask NMI requests when the BL bit in SR is set to 1 can be selected.
Extended function for SH-4A
•
Automatically updates the IMASK bit in SR according to the accepted interrupt level
•
Thirteen levels of on-chip module interrupt priority can be set
By setting thirteen interrupt priority registers, the priorities of on-chip module interrupts can be
selected from 30 levels for individual request sources.
•
User-mode interrupt disabling function
Specifying an interrupt mask level in the user interrupt mask level register (USERIMASK)
disables interrupts which are not higher in priority than the specified mask level in user mode.
Figure 9.1 shows a block diagram of the INTC.
Summary of Contents for SH7763
Page 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Page 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Page 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Page 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Page 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Page 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Page 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Page 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Page 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Page 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Page 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Page 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Page 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Page 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Page 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Page 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Page 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Page 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
Page 2025: ......
Page 2026: ...SH7763 Hardware Manual ...