Control Of Input Ports - Epson 0C88832 Technical Manual

5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Input Ports)

5.4.4 Control of input ports

Table 5.4.4.1 shows the input port control bits.
Address Bit Name
00FF50 D7 SIK07
K07 interrupt selection register
D6 SIK06 K06 interrupt selection register
D5 SIK05
K05 interrupt selection register
D4 SIK04 K04 interrupt selection register
D3 SIK03
K03 interrupt selection register
D2 SIK02 K02 interrupt selection register
D1 SIK01
K01 interrupt selection register
D0 SIK00 K00 interrupt selection register
00FF51 D7 –
–
D6 – –
D5 –
–
D4 – –
D3 –
–
D2 – –
D1 SIK11
General-purpose register
D0 SIK10 K10 interrupt selection register
00FF52 D7 KCP07
K07 input comparison register
D6 KCP06 K06 input comparison register
D5 KCP05
K05 input comparison register
D4 KCP04 K04 input comparison register
D3 KCP03
K03 input comparison register
D2 KCP02 K02 input comparison register
D1 KCP01
K01 input comparison register
D0 KCP00 K00 input comparison register
00FF53 D7 –
–
D6 – –
D5 –
–
D4 – –
D3 –
–
D2 – –
D1 KCP11
General-purpose register
D0 KCP10 K10 input comparison register
00FF54 D7 K07D
K07 input port data
D6 K06D K06 input port data
D5 K05D
K05 input port data
D4 K04D K04 input port data
D3 K03D
K03 input port data
D2 K02D K02 input port data
D1 K01D
K01 input port data
D0 K00D K00 input port data
00FF55 D7 –
–
D6 – –
D5 –
–
D4 – –
D3 –
–
D2 – –
D1 –
–
D0 K10D
K10 input port data
36
Table 5.4.4.1(a) Input port control bits
Function
EPSON
1 0 SR R/W
0
0
0
0
Interrupt Interrupt
0
enable disable
0
0
0
–
– –
–
– –
–
– –
–
– –
–
– –
–
– –
0
1 0
0
Enable Disable
1
1
1
Interrupt Interrupt
1
generated generated
1
at falling at rising
1
edge edge
1
1
–
– –
–
– –
–
– –
–
– –
–
– –
–
– –
1
1 0
1
Falling edge Rising edge
–
–
–
–
High level Low level
–
input input
–
–
–
–
– –
–
– –
_
– –
_
– –
_
– –
_
– –
–
– –
–
High level Low level
E0C88832/88862 TECHNICAL MANUAL
Comment
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Constantly "0" when
being read
R/W
Reserved register
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Constantly "0" when
being read
R/W
Reserved register
R/W
R
R
R
R
R
R
R
R
Constantly "0" when
being read
"1" when being read
R