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APPENDIX: I/O MAP
S1C33L03 FUNCTION PART EPSON B-APPENDIX-9
A-1
B-ap
NameAddressRegister name Bit Function Setting Init. R/W Remarks
0x0 to 0xFF(0x7F)TXD07
TXD06
TXD05
TXD04
TXD03
TXD02
TXD01
TXD00
D7
D6
D5
D4
D3
D2
D1
D0
Serial I/F Ch.0 transmit data
TXD07(06) = MSB
TXD00 = LSB
X
X
X
X
X
X
X
X
R/W 7-bit asynchronous
mode does not use
TXD07.
00401E0
(B)
Serial I/F Ch.0
transmit data
register
0x0 to 0xFF(0x7F)RXD07
RXD06
RXD05
RXD04
RXD03
RXD02
RXD01
RXD00
D7
D6
D5
D4
D3
D2
D1
D0
Serial I/F Ch.0 receive data
RXD07(06) = MSB
RXD00 = LSB
X
X
X
X
X
X
X
X
R 7-bit asynchronous
mode does not use
RXD07 (fixed at 0).
00401E1
(B)
Serial I/F Ch.0
receive data
register
–
TEND0
FER0
PER0
OER0
TDBE0
RDBF0
D7–6
D5
D4
D3
D2
D1
D0
–
Ch.0 transmit-completion flag
Ch.0 flaming error flag
Ch.0 parity error flag
Ch.0 overrun error flag
Ch.0 transmit data buffer empty
Ch.0 receive data buffer full
–
0
0
0
0
1
0
–
R
R/W
R/W
R/W
R
R
0 when being read.
Reset by writing 0.
Reset by writing 0.
Reset by writing 0.
00401E2
(B)
–
1 Error 0 Normal
1
Transmitting
0 End
1 Error 0 Normal
1 Error 0 Normal
1 Empty 0 Buffer full
1 Buffer full 0 Empty
Serial I/F Ch.0
status register
TXEN0
RXEN0
EPR0
PMD0
STPB0
SSCK0
SMD01
SMD00
D7
D6
D5
D4
D3
D2
D1
D0
Ch.0 transmit enable
Ch.0 receive enable
Ch.0 parity enable
Ch.0 parity mode selection
Ch.0 stop bit selection
Ch.0 input clock selection
Ch.0 transfer mode selection
1
1
0
0
1
0
1
0
SMD0[1:0] Transfer mode
8-bit asynchronous
7-bit asynchronous
Clock sync. Slave
Clock sync. Master
0
0
X
X
X
X
X
X
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Valid only in
asynchronous mode.
00401E3
(B)
1 Enabled 0 Disabled
1 Enabled 0 Disabled
1 With parity 0 No parity
1 Odd 0 Even
1 2 bits 0 1 bit
1 #SCLK0 0
Internal clock
Serial I/F Ch.0
control register
–
DIVMD0
IRTL0
IRRL0
IRMD01
IRMD00
D7–5
D4
D3
D2
D1
D0
–
Ch.0 async. clock division ratio
Ch.0 IrDA I/F output logic inversion
Ch.0 IrDA I/F input logic inversion
Ch.0 interface mode selection
1
1
0
0
1
0
1
0
IRMD0[1:0]
–
I/F mode
reserved
IrDA 1.0
reserved
General I/F
–
X
X
X
X
X
–
R/W
R/W
R/W
R/W
0 when being read.
Valid only in
asynchronous mode.
00401E4
(B)
1 1/8 0 1/16
1 Inverted 0 Direct
1 Inverted 0 Direct
Serial I/F Ch.0
IrDA register