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Register
Address
D3
D2
0
SMD1
SMD0
FF70H
R
EPR
PMD
SCS1
FF71H
R/W
RXTRG RXEN TXTRG
FF72H
R/W
0
FER
FF73H
R
TRXD3 TRXD2 TRXD1 TRXD0
FF74H
R/W
TRXD7 TRXD6 TRXD5 TRXD4
FF75H
R/W
0
EISER
EISTR
FFE3H
R
0
EISERS EISTRS EISRCS
FFE8H
R
0
ISER
FFF3H
R
0
ISERS
ISTRS
FFF8H
R
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read
ESIF: Serial interface (1) enable register (P1 port function selection) (FF70H•D0)
ESIFS: Serial interface (2) enable register (P3 port function selection) (FF58H•D0)
Sets P10–P13 to the input/output port for the serial interface.
When "1" is written: Serial interface
When "0" is written: I/O port
Reading: Valid
S1C63558 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Serial Interface)
Table 4.11.9.1(b) Serial interface control bits
D1
D0
Name Init
1
3
2
0
–
ESIF
SMD1
0
SMD0
0
R/W
ESIF
0
EPR
0
SCS0
PMD
0
SCS1
0
SCS0
0
RXTRG
0
TXEN
RXEN
0
TXTRG
0
TXEN
0
3
2
0
–
FER
0
PER
OER
PER
0
R/W
OER
0
2
TRXD3
–
TRXD2
–
2
TRXD1
–
2
2
TRXD0
–
TRXD7
–
2
2
TRXD6
–
TRXD5
–
2
2
TRXD4
–
3
2
0
–
EISRC
EISER
0
EISTR
0
R/W
EISRC
0
3
2
0
–
EISERS
0
EISTRS
0
R/W
EISRCS
0
0
3
–
2
ISTR
ISRC
ISER
0
ISTR
0
R/W
ISRC
0
3
2
0
–
ISRCS
ISERS
0
ISTRS
0
R/W
ISRCS
0
1
0
Unused
Serial I/F (1)
mode selection
SIF
I/O
Serial I/F (1) enable (P1x port function selection)
Enable
Disable
Serial I/F (1) parity enable register
Odd
Even
Serial I/F (1) parity mode selection
SIF (1) clock
source selection
Run
Stop
Serial I/F (1) receive status (reading)
Trigger
–
Serial I/F (1) receive trigger (writing)
Enable
Disable
Serial I/F (1) receive enable
Run
Stop
Serial I/F (1) transmit status (reading)
Trigger
–
Serial I/F (1) transmit trigger (writing)
Enable
Disable
Serial I/F (1) transmit enable
Unused
Error
No error
Serial I/F (1) framing error flag status (reading)
Reset
–
Serial I/F (1) framing error flag reset (writing)
Error
No error
Serial I/F (1) parity error flag status (reading)
Reset
–
Serial I/F (1) parity error flag reset (writing)
Error
No error
Serial I/F (1) overrun error flag status (reading)
Reset
–
Serial I/F (1) overrun error flag reset (writing)
High
Low
High
Low
Serial I/F (1) t
High
Low
High
Low
LSB
High
Low
MSB
High
Low
Serial I/F (1) t
High
Low
High
Low
Unused
Enable
Mask
Interrupt mask register (Serial I/F (1) error)
Enable
Mask
Interrupt mask register (Serial I/F (1) transmit completion)
Enable
Mask
Interrupt mask register (Serial I/F (1) receive completion)
Unused
Enable
Mask
Interrupt mask register (Serial I/F (2) error)
Enable
Mask
Interrupt mask register (Serial I/F (2) transmit completion)
Enable
Mask
Interrupt mask register (Serial I/F (2) receive completion)
(R)
(R)
Unused
Yes
No
Interrupt factor flag (Serial I/F (1) error)
(W)
(W)
Interrupt factor flag (Serial I/F (1) transmit completion)
Reset
Invalid
Interrupt factor flag (Serial I/F (1) receive completion)
(R)
(R)
Unused
Yes
No
Interrupt factor flag (Serial I/F (2) error)
(W)
(W)
Interrupt factor flag (Serial I/F (2) transmit completion)
Reset
Invalid
Interrupt factor flag (Serial I/F (2) receive completion)
EPSON
Comment
[SMD1, 0]
0
Mode
Clk-sync. master
Clk-sync. slave
[SMD1, 0]
2
Mode
Async. 7-bit
[SCS1, 0]
0
1
Mode
1200bps
600bps
2400bps
ransmit/receive data
(low-order 4 bits)
ransmit/receive data
(high-order 4 bits)
1
3
Async. 8-bit
2
3
PT
93
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