0X4100-0X4105; Uart (With Irda - Epson S1C17704 Technical Manual

0x4100–0x4105
Register name Address Bit
UART Status 0x4100 D7
Register (8 bits)
D6
(UART_ST)
D5
D4
D3
D2
D1
D0
UART Transmit 0x4101 D7–0 TXD[7:0]
Data Register (8 bits)
(UART_TXD)
UART Receive 0x4102 D7–0 RXD[7:0]
Data Register (8 bits)
(UART_RXD)
UART Mode 0x4103 D7–5 –
Register (8 bits)
D4
(UART_MOD)
D3
D2
D1
D0
UART Control 0x4104 D7
Register (8 bits)
D6
(UART_CTL)
D5
D4
D3–2 –
D1
D0
UART 0x4105 D7
Expansion (8 bits)
D6–4 IRCLK[2:0] IrDA receive detection clock select
Register
(UART_EXP)
D3–1 –
D0
S1C17704 TECHNICAL MANUAL
Name Function
– reserved
FER Framing error flag
PER Parity error flag
OER Overrun error flag
RD2B Second byte receive flag
TRBS Transmit busy flag
RDRY Receive data ready flag
TDBE Transmit data buffer empty flag
Transmit data
TXD7(6) = MSB
TXD0 = LSB
Receive data in the receive data
buffer
RXD7(6) = MSB
RXD0 = LSB
reserved
CHLN Character length
PREN
Parity enable
PMD Parity mode select
STPB Stop bit select
SSCK Input clock select
– reserved
REIEN Receive error int. enable
RIEN Receive buffer full int. enable
TIEN Transmit buffer empty int. enable
reserved
RBFI Receive buffer full int. condition
RXEN UART enable
– reserved
reserved
IRMD IrDA mode select
EPSON
APPENDIX A LIST OF I/O REGISTERS
Setting Init. R/W
–
1 Error 0 Normal
1 Error 0 Normal
1 Error 0 Normal
1 Ready 0 Empty
1 Busy 0 Idle
1 Ready 0 Empty
1 Empty 0 Not empty
0x0 to 0xff (0x7f) 0x0 R/W
0x0 to 0xff (0x7f) 0x0
–
1 8 bits 0 7 bits
1 With parity 0 No parity
1 Odd 0 Even
1 2 bits 0 1 bit
1 External 0 Internal
–
1 Enable 0 Disable
1 Enable 0 Disable
1 Enable 0 Disable
–
1 2 bytes 0 1 byte
1 Enable 0 Disable
–
IRCLK[2:0] Clock 0x0 R/W
0x7 PCLK•1/128
0x6 PCLK•1/64
0x5 PCLK•1/32
0x4 PCLK•1/16
0x3 PCLK•1/8
0x2 PCLK•1/4
0x1 PCLK•1/2
0x0 PCLK•1/1
–
1 On 0 Off

UART (with IrDA)

Remarks
– – 0 when being read.
0 R/W Reset by writing 1.
0 R/W
0 R/W
0 R
0 R Shift register status
0 R
1 R
R Older data in the buf-
fer is read out first.
– – 0 when being read.
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
– – 0 when being read.
0 R/W
0 R/W
0 R/W
– – 0 when being read.
0 R/W
0 R/W
– – 0 when being read.
– – 0 when being read.
0 R/W
AP-5