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22 EPSON S1C63558 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Table 4.1.1 (h) I/O memory map (FFF8H–FFFAH)
Address Comment
D3 D2
Register
D1 D0 Name Init
∗1
10
FFF9H
000ID
R R/W
0
∗
3
0
∗
3
0
∗
3
ID
–
∗
2
–
∗
2
–
∗
2
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Unused
Unused
Interrupt factor flag (Dialer)
FFFAH
00IRDET ICDET
R R/W
0
∗
3
0
∗
3
IRDET
ICDET
–
∗
2
–
∗
2
0
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Unused
Interrupt factor flag (FSK demodulator ring detection)
Interrupt factor flag (FSK demodulator carrier detection)
FFF8H
0 ISERS ISTRS ISRCS
R R/W
0
∗
3
ISERS
ISTRS
ISRCS
–
∗
2
0
0
0
(R)
Yes
(W)
Reset
(R)
No
(W)
Invalid
Unused
Interrupt factor flag (Serial I/F (2) error)
Interrupt factor flag (Serial I/F (2) transmit completion)
Interrupt factor flag (Serial I/F (2) receive completion)