Renesas M16C Series User Manual page 72

M30245 Group
Interrupt request cause select register
b7 b6
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Figure 2.4.6. UARTi-related registers (4)
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
b5 b4 b3 b2 b1 b0
Symbol
IFSR
Bit Symbol
IFSR0
IFSR1
IFSR2
Nothing is assigned.
Write "0" when writing to this bit. The value is indeterminate when read.
IFSR6
IFSR7
page 63 of 354
Address
035F ,
16
Bit name
INT0 interrupt polarity 0 : One edge
swiching bit 1 : Two edges
INT1 interrupt polarity 0 : One edge
swiching bit 1 : Two edges
INT2 interrupt polarity 0 : One edge
swiching bit 1 : Two edges
0 : UART0 Bus collision /
Bus collision interrupt
request cause select bit 0
1 : UART2 Bus collision /
0 : UART1 Bus collision /
Bus collision interrupt
request cause select bit 1
1 : UART3 Bus collision /
When reset
00
16
Function
Start/stop condition detection /
Trouble error detection
Start/stop condition detection /
Trouble error detection
Start/stop condition detection /
Trouble error detection
Start/stop condition detection /
Trouble error detection
2. UART
R W