Hitachi H8S/2646 Hardware Manual page 1078

SCR1—Serial Control Register 1
Bit 7
TIE
Initial value 0
Read/Write R/W
Transmit Interrupt Enable
0 Transmit-data-empty interrupt
(TXI) request disabled
1 Transmit-data-empty interrupt
(TXI) request enabled
Receive Interrupt Enable
0 Receive-data-full interrupt (RXI)
request and receive-error interrupt
(ERI) request disabled
1 Receive-data-full interrupt (RXI)
request and receive-error interrupt
(ERI) request enabled
1046
6 5
RIE TE
0 0
R/W R/W
Multiprocessor Interrupt Enable
0
*1
1
Receive Enable
0 Reception disabled
1 Reception enabled
*2
Transmit Enable
0 Transmission disabled
1 Transmission enabled
H'FF82
4 3
RE MPIE
0 0
R/W R/W
Clock Enable 1 and 0
0 0 Asynchronous
mode
Clocked
synchronous mode
1 Asynchronous
mode
Clocked
synchronous mode
1 0 Asynchronous
mode
Clocked
synchronous mode
1 Asynchronous
mode
Clocked
synchronous mode
Transmit End Interrupt Enable
0 Transmit-end interrupt (TEI) request disabled
1 Transmit-end interrupt (TEI) request enabled
Multiprocessor interrupts disabled
(normal reception mode performed)
[Clearing conditions]
• When the MPIE bit is cleared to 0
• When MPB = 1 data 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
*5
*6
*3
*4
2 1
TEIE CKE1 CKE0
0 0
R/W R/W R/W
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
Internal clock/SCK pin
functions as serial clock output
External clock/SCK pin
functions as clock input
External clock/SCK pin
functions as serial clock input
External clock/SCK pin
functions as clock input
External clock/SCK pin
functions as serial clock input
*8
*8
*7
SCI1
0
0
*9
*10
*10