Epson S1C17624 Technical Manual page 196

D4 Chln: Character length Select Bit
Selects the serial transfer data length.
1 (R/W): 8 bits
0 (R/W): 7 bits (default)
D3 PRen: Parity enable Bit
Enables the parity function.
1 (R/W): With parity
0 (R/W): No parity (default)
PREN is used to select whether received data parity checking is performed and whether a parity bit is
added to transmit data. Setting PREN to 1 parity-checks the received data. A parity bit is automatically
added to the transmit data. If PREN is set to 0, no parity bit is checked or added.
D2 PMD: Parity Mode Select Bit
Selects the parity mode.
1 (R/W): Odd parity
0 (R/W): Even parity (default)
Writing 1 to PMD selects odd parity; writing 0 to it selects even parity. Parity checking and parity bit
addition are enabled only when PREN is set to 1. The PMD setting is disabled if PREN is 0.
D1 STPB: Stop Bit Select Bit
Selects the stop bit length.
1 (R/W): 2 bits
0 (R/W): 1 bit (default)
Writing 1 to STPB selects 2 stop bits; writing 0 to it selects 1 bit. The start bit is fixed at 1 bit.
D0 SSCK: input Clock Select Bit
Selects the input clock.
1 (R/W): External clock (SCLKx)
0 (R/W): Internal clock (default)
Select whether the internal clock (T8F output clock) or an external clock (input via SCLKx pin) is used.
Writing 1 to SSCK selects an external clock; Writing 0 to it selects the internal clock.
uaRT Ch.x Control Registers (uaRT_CTlx)
Register name address Bit
uaRT Ch.x 0x4104
D7
Control Register 0x4124
D6
(uaRT_CTlx)
(8 bits)
D5
D4
D3–2 –
D1
D0
D7 Reserved
D6 Reien: Receive error interrupt enable Bit
Enables interrupt requests to the ITC when a receive error occurs.
1 (R/W): Enabled
0 (R/W): Disabled (default)
Set this bit to 1 to process receive errors using interrupts.
D5 Rien: Receive Buffer Full interrupt enable Bit
Enables interrupt requests to the ITC caused when the received data quantity in the receive data buffer
reaches the quantity specified in RBFI.
1 (R/W): Enabled
0 (R/W): Disabled (default)
Set this bit to 1 to read received data using interrupts.
S1C17624/604/622/602/621 TeChniCal Manual
name Function
–
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 setup 1 2 bytes
RXen
UART enable
Seiko epson Corporation
Setting init. R/W
–
1 Enable 0 Disable
1 Enable 0 Disable
1 Enable 0 Disable
–
0 1 byte
1 Enable 0 Disable
18 uaRT
Remarks
– – 0 when being read.
0 R/W
0 R/W
0 R/W
– – 0 when being read.
0 R/W
0 R/W
18-11