tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 91

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Exceptions/Interrupts
6.5.2.7
(1) Judging factor
Exception Handler
software interrupt factor. If any of the Cause<IP>[4:2] indicates “1”, it is the hardware interrupt factor.
Detecting both interrupts simultaneously enables both factors.
IVR[8:0] according to a factor. See factor list for details.
The exception handler requires user programming. We describe how to judge and clear a factor here.
The procedure is as follows:
(1) Judging factor
(2) Clearing interrupt request (INTC)
(3) Branch to Interrupt Handler
(4) Clearing Interrupt Factor
(5) Interrupt Handler Processing
(6) Returning from Exception Handler
The registers used for judging a factor are shown below.
The Cause<IP>[4:0] indicates an interrupt factor. If any of the Cause<IP>[1:0] indicates “1”, it is the
If an interrupt is generated from hardware, the IVR register of INTC indicates the factor. Value is set to
●CP0 register
Cause<IP>[4:2]
Cause<IP>[1:0]
●INTC
IVR[8:0]
Hardware interrupt level
“000”: No hardware interrupt factor
Write “1” for using software interrupt.
“00”: No software interrupt factor
Value according to factors
(See factor list)
TMP19A44(rev1.3) 6-41
TMP19A44
2010-04-01