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C167CS Datasheet(PDF) 112 Page - Infineon Technologies AG

Part # C167CS
Description  16-Bit Single-Chip Microcontroller
PDF  517 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

C167CS Datasheet(HTML) 112 Page - Infineon Technologies AG

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C167CS
Derivatives
Interrupt and Trap Functions
User’s Manual
5-29
V2.0, 2000-07
External Interrupt Source Control
The input source for fast external interrupts (controlled via register EXICON) can be
derived either from the associated port pin EXnIN or from an alternate source. This
selection is controlled via register EXISEL.
Activating the alternate input source e.g. permits the detection of transitions on the
interface lines of disabled interfaces. Upon this trigger the respective interface can be
reactivated and respond to the detected activity.
Table 5-9 summarizes the association of the bitfields of register EXISEL with the
respective interface input lines.
EXISEL
Ext. Interrupt Source Reg.
ESFR (F1DAH/EDH)
Reset Value: 0000H
15
14
13
12
11
10
98765
43210
EXI7SS
EXI6SS
EXI5SS
EXI4SS
EXI3SS
EXI2SS
EXI1SS
EXI0SS
rw
rw
rw
rw
rw
rw
rw
rw
Bit
Function
EXIxSS
External Interrupt x Source Selection Field (x = 7 … 0)
00:
Input from associated EXzIN pin.
01:
Input from alternate pin.
10:
Input from pin EXzIN ORed with alternate pin.
11:
Input from pin EXzIN ANDed with alternate pin.
Table 5-9
Connection of Interface Inputs to External Interrupt Nodes
Bitfield
Associated Interface Line
Notes
EXI0SS
CAN1_RxD
The used pin depends on the
assignment for the respective module.
EXI1SS
CAN2_RxD
EXI2SS
RxD0
ASC0
EXI3SS
SCLK
SSC



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