TC1796
System Units (Vol. 1 of 2)
System Control Unit
User’s Manual 5-20 V2.0, 2007-07
SCU, V2.0
EICR1
External Input Channel Register 1
(F0000084
H
) Reset Value: 0000 0000
H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0INP3
EI
EN3
LD
EN3
R
EN3
F
EN3
0EXIS3 0
r rw rwrwrwrw r rw r
1514131211109876543210
0INP2
EI
EN2
LD
EN2
R
EN2
F
EN2
0EXIS2 0
r rw rwrwrwrw r rw r
Field Bits Type Description
EXIS2 [5:4] rw External Input Selection 2
This bit field determines which input line is selected
for signal IN2.
00
B
Input IN20 is selected.
01
B
Input IN21 is selected.
10
B
Input IN22 is selected.
11
B
Input IN23 is selected.
FEN2 8rwFalling Edge Enable 2
This bit determines if the falling edge of signal IN2 is
used to set bit INTF2.
0
B
The falling edge is not used.
1
B
The detection of a falling edge of IN2 generates
a trigger event (INTF3 becomes set).
REN2 9rwRising Edge Enable 2
This bit determines if the rising edge of signal IN2 is
used to set bit INTF2.
0
B
The rising edge is not used.
1
B
The detection of a rising edge of IN2 generates
a trigger event (INTF2 becomes set).
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