aPPenDiX a liST OF i/O ReGiSTeRS
S1C17153 TeChniCal Manual
Seiko epson Corporation
aP-a-3
(Rev. 1.0)
0x4100–0x4107, 0x506c
uaRT (with irDa) Ch.0
Register name address
Bit
name
Function
Setting
init. R/W
Remarks
uaRT Ch.0
Status Register
(uaRT_ST0)
0x4100
(8 bits)
D7
TReD
End of transmission flag
1 Completed 0 Not completed
0
R/W Reset by writing 1.
D6
FeR
Framing error flag
1 Error
0 Normal
0
R/W
D5
PeR
Parity error flag
1 Error
0 Normal
0
R/W
D4
OeR
Overrun error flag
1 Error
0 Normal
0
R/W
D3
RD2B
Second byte receive flag
1 Ready
0 Empty
0
R
D2
TRBS
Transmit busy flag
1 Busy
0 Idle
0
R Shift register status
D1
RDRY
Receive data ready flag
1 Ready
0 Empty
0
R
D0
TDBe
Transmit data buffer empty flag
1 Empty
0 Not empty
1
R
uaRT Ch.0
Transmit Data
Register
(uaRT_TXD0)
0x4101
(8 bits)
D7–0
TXD[7:0]
Transmit data
TXD7(6) = MSB
TXD0 = LSB
0x0 to 0xff (0x7f)
0x0 R/W
uaRT Ch.0
Receive Data
Register
(uaRT_RXD0)
0x4102
(8 bits)
D7–0
RXD[7:0]
Receive data in the receive data
buffer
RXD7(6) = MSB
RXD0 = LSB
0x0 to 0xff (0x7f)
0x0
R Older data in the buf-
fer is read out first.
uaRT Ch.0
Mode Register
(uaRT_MOD0)
0x4103
(8 bits)
D7–5
–
reserved
–
–
–
0 when being read.
D4
Chln
Character length select
1 8 bits
0 7 bits
0
R/W
D3
PRen
Parity enable
1 With parity
0 No parity
0
R/W
D2
PMD
Parity mode select
1 Odd
0 Even
0
R/W
D1
STPB
Stop bit select
1 2 bits
0 1 bit
0
R/W
D0
–
reserved
–
–
–
0 when being read.
uaRT Ch.0
Control Register
(uaRT_CTl0)
0x4104
(8 bits)
D7
Teien
End of transmission int. enable
1 Enable
0 Disable
0
R/W
D6
Reien
Receive error int. enable
1 Enable
0 Disable
0
R/W
D5
Rien
Receive buffer full int. enable
1 Enable
0 Disable
0
R/W
D4
Tien
Transmit buffer empty int. enable
1 Enable
0 Disable
0
R/W
D3–2
–
reserved
–
–
–
0 when being read.
D1
RBFi
Receive buffer full int. condition setup 1 2 bytes
0 1 byte
0
R/W
D0
RXen
UART enable
1 Enable
0 Disable
0
R/W
uaRT Ch.0
expansion
Register
(uaRT_eXP0)
0x4105
(8 bits)
D7–1
–
reserved
–
–
–
0 when being read.
D0
iRMD
IrDA mode select
1 On
0 Off
0
R/W
uaRT Ch.0
Baud Rate
Register
(uaRT_BR0)
0x4106
(8 bits)
D7–0
BR[7:0]
Baud rate setting
0x0 to 0xff
0x0 R/W
uaRT Ch.0
Fine Mode
Register
(uaRT_FMD0)
0x4107
(8 bits)
D7–4
–
reserved
–
–
–
0 when being read.
D3–0
FMD[3:0]
Fine mode setup
0x0 to 0xf
0x0 R/W Set a number of times
to insert delay into a
16-underflow period.
uaRT Ch.0
Clock Control
Register
(uaRT_ClK0)
0x506c
(8 bits)
D7–6
–
reserved
–
–
–
0 when being read.
D5–4
uTClKD
[1:0]
Clock division ratio select
UTCLKD[1:0]
Division ratio
0x0 R/W When the clock
source is OSC3B
0x3
0x2
0x1
0x0
1/8
1/4
1/2
1/1
D3–2
uTClKSRC
[1:0]
Clock source select
UTCLKSRC
[1:0]
Clock source
0x0 R/W
0x3
0x2
0x1
0x0
External clock
reserved
OSC1A
OSC3B
D1
–
reserved
–
–
–
0 when being read.
D0
uTClKe
UART clock enable
1 Enable
0 Disable
0
R/W