Section 6 Interrupt Controller (INTC)
Rev. 5.00 May 29, 2006 page 124 of 698
REJ09B0146-0500
6.4.1
Interrupt Priority Registers A to E (IPRA to IPRE)
The interrupt priority level setting registers A to E (IPRA to IPRE) are 16-bit read/write registers
that set priority levels from 0 to 15 for on-chip peripheral module interrupts. These registers are
initialized to H'0000 at power-on reset, manual reset, or in hardware standby mode, but is not
initialized in standby mode.
Table 6.6 lists the relationship between the interrupt sources and the IPRA to IPRE bits.
Table 6.6
Interrupt Request Sources and IPRA to IPRE
Register
Bits 15 to 12
Bits 11 to 8
Bits 7 to 4
Bits 3 to 0
IPRA
TMU0
TMU1
TMU2
RTC
IPRB
WDT
REF
SCI0
Reserved
*
IPRC
IRQ3
IRQ2
IRQ1
IRQ0
IPRD
Reserved
*
Reserved
*
IRQ5
IRQ4
IPRE
DMAC
Reserved
*
SCIF
ADC
Note:
*
These bits are always read as 0. The write value should be 0.
As shown in table 6.6, four sets of on-chip peripheral module, IRQ interrupts are assigned to each
register. 4-bit groups (bits 15 to 12, bits 11 to 8, bits 7 to 4, and bits 3 to 0) are set with values
from H'0 (0000) to H'F (1111). Setting H'0 means priority level 0 (masking is requested); H'F is
priority level 15 (the highest level). A reset initializes IPRA to IPRE to H'0000.
H'0 should be set into bits corresponding to an unused interrupt.
Summary of Contents for SH7706 Series
Page 8: ...Rev 5 00 May 29 2006 page viii of xlviii ...
Page 160: ...Section 5 Cache Rev 5 00 May 29 2006 page 112 of 698 REJ09B0146 0500 ...
Page 370: ...Section 11 Watchdog Timer WDT Rev 5 00 May 29 2006 page 322 of 698 REJ09B0146 0500 ...
Page 554: ...Section 17 Pin Function Controller PFC Rev 5 00 May 29 2006 page 506 of 698 REJ09B0146 0500 ...
Page 576: ...Section 18 I O Ports Rev 5 00 May 29 2006 page 528 of 698 REJ09B0146 0500 ...
Page 746: ...Index Rev 5 00 May 29 2006 page 698 of 698 REJ09B0146 0500 ...
Page 749: ...SH7706 Group Hardware Manual ...