Epson 0C88832 Technical Manual page 43

Address Bit Name
00FF20 D7 PK01
K00–K07 interrupt priority register
D6 PK00
D5 PSIF1
Serial interface interrupt priority register
D4 PSIF0
D3 PSW1
Stopwatch timer interrupt priority register
D2 PSW0
D1 PTM1
Clock timer interrupt priority register
D0 PTM0
00FF21 D7 – –
D6 –
–
D5 – –
D4 –
–
D3 PPT1
Programmable timer interrupt priority register
D2 PPT0
D1 PK11
K10 interrupt priority register
D0 PK10
00FF23 D7 EPT1
Programmable timer 1 interrupt enable register
D6 EPT0
Programmable timer 0 interrupt enable register
D5 EK1
K10 interrupt enable register
D4 EK0H
K04–K07 interrupt enable register
D3 EK0L
K00–K03 interrupt enable register
D2 ESERR
Serial I/F (error) interrupt enable register
D1 ESREC
Serial I/F (receiving) interrupt enable register
D0 ESTRA Serial I/F (transmitting) interrupt enable register
00FF25 D7 FPT1
Programmable timer 1 interrupt factor flag
D6 FPT0
Programmable timer 0 interrupt factor flag
D5 FK1
K10 interrupt factor flag
D4 FK0H K04–K07 interrupt factor flag
D3 FK0L
K00–K03 interrupt factor flag
D2 FSERR Serial I/F (error) interrupt factor flag
D1 FSREC
Serial I/F (receiving) interrupt factor flag
D0 FSTRA Serial I/F (transmitting) interrupt factor flag
K00D–K07D: 00FF54H
K10D: 00FF55H•D0
Input data of input port terminal Kxx can be read out.
When "1" is read:
When "0" is read:
Writing:
The terminal voltage of each of the input port K00–
K07 and K10 can be directly read out as either a "1"
for HIGH (V ) level or a "0" for LOW (V
DD
This bit is exclusively for readout and are not
usable for write operations.
E0C88832/88862 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Input Ports)
Table 5.4.4.1(b) Input port control bits
Function
HIGH level
LOW level
Invalid
) level.
SS
1
PK01 PK00
PSIF1 PSIF0
PSW1 PSW0 Priority
PTM1 PTM0
1 1 Level 3
1 0 Level 2
0 1 Level 1
0 0 Level 0
–
–
–
–
PPT1 PPT0 Priority
PK11 PK10
1 1 Level 3
1 0 Level 2
0 1 Level 1
0 0 Level 0
Interrupt Interrupt
enable disable
(R)
Interrupt No interrupt
factor is factor is
generated generated
(W)
Reset No operation
SIK00–SIK07: 00FF50H
SIK10: 00FF51H•D0
Sets the interrupt generation condition (interrupt
permission/prohibition) for input port terminals
K00–K07 and K10.
When "1" is written: Interrupt permitted
When "0" is written: Interrupt prohibited
Reading:
SIKxx is the interrupt selection register which
correspond to the input port Kxx. A "1" setting
permits interrupt in that input port and a "0"
prohibits it. Changes of state in an input terminal in
which interrupt is prohibited, will not influence
interrupt generation.
At initial reset, this register is set to "0" (interrupt
prohibited).
EPSON
0 SR R/W Comment
0 R/W
0 R/W
0 R/W
0 R/W
level
0 R/W
0 R/W
0 R/W
0 R/W
–
–
–
– Constantly "0" when
–
– being read
–
–
0 R/W
level
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
(R)
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
(W)
0 R/W
0 R/W
Valid
37