Renesas SH7781 用户手册

10.   Interrupt Controller (INTC) 

Rev.1.00  Jan. 10, 2008  Page 344 of 1658 
REJ09B0261-0100 

 

IRL[7:0] Pin Function 

When the IRQ/

IRL[7:0] pin functions are switched, the INTC may retain an incorrectly detected 

interrupt request. Therefore, mask the IRL and IRQ interrupt requests before switching the 
IRQ/

IRL[7:0] pin functions. 

IRL[7:0] Pin Function 

1 

IRL interrupt request and IRQ interrupt 
request masking 

Write 1 to all bits in INTMSK0 and 
INTMSK1 except reserved bits 

2 Setting 

IRL/

IRQ[7:4] pins to IRL7 to IRL4  Write 0 to the PMSEL14 bit in PMSELR 

Write 0 to the PL4MD1, PL4MD0, 
PL3MD1, PL3MD0, PL2MD1, PL2MD0, 
PL1MD1, PL1MD0 bits in PLCR 

3 

Setting IRQ/IRL[7:0] pins to IRL or IRQ 

Set bits IRLM1 to IRLM0 in ICR0 

4 

Start of IRL and IRQ interrupt detection 

Write 1 to the corresponding bit in 
INTMSKCLR0 and INTMSKCLR1