583
SCR1—Serial Control Register 1
H'FF82
SCI1
Bit
Initial value
Read/Write
7
TIE
0
R/W
6
RIE
0
R/W
5
TE
0
R/W
4
RE
0
R/W
3
MPIE
0
R/W
2
TEIE
0
R/W
1
CKE1
0
R/W
0
CKE0
0
R/W
0
Asynchronous
mode
Synchronous
mode
Clock Enable
Asynchronous
mode
Synchronous
mode
Asynchronous
mode
1
Synchronous
mode
Asynchronous
mode
Synchronous
mode
0
0
1
1
Internal clock/SCK pin functions as
I/O port
Internal clock/SCK pin functions as
serial clock output
Internal clock/SCK pin functions as
clock output
*
1
Internal clock/SCK pin functions as
serial clock output
External clock/SCK pin functions as
clock input
*
2
External clock/SCK pin functions as
serial clock input
External clock/SCK pin functions as
clock input
*
2
External clock/SCK pin functions as
serial clock input
0
Transmit-end interrupt (TEI) request disabled
Transmit-end interrupt (TEI) request enabled
Transmit-End Interrupt Enable
1
0
Reception disabled
Reception enabled
Receive Enable
1
0
Multiprocessor interrupts disabled
[Clearing conditions]
• When the MPIE bit is cleared to 0
• When data with MPB = 1 is received
Multiprocessor interrupts enabled
Receive interrupt (RXI) requests, receive-error interrupt (ERI)
requests, and setting of the RDRF, FER, and ORER flags in SSR are
disabled until data with the multiprocessor bit set to 1 is received
Multiprocessor Interrupt Enable
1
0
Transmission disabled
Transmission enabled
Transmit Enable
1
0
Receive-data-full interrupt (RXI) request and receive-error interrupt (ERI) request disabled
Receive-data-full interrupt (RXI) request and receive-error interrupt (ERI) request enabled
Receive Interrupt Enable
1
0
Transmit-data-empty interrupt (TXI) request disabled
Transmit-data-empty interrupt (TXI) request enabled
Transmit Interrupt Enable
1
Notes: 1. Outputs a clock of the same frequency as the bit rate.
2. Inputs a clock with a frequency 16 times the bit rate.
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