D12320VF25IV Datasheet, PDF (1208/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Appendix B Internal I/O Registers
SCR2—Serial Control Register 2
H'FF8A
SCI2
Bit
:
7
6
5
4
3
2
1
0
TIE
RIE
TE
RE MPIE TEIE CKE1 CKE0
Initial value :
0
0
0
0
0
0
0
0
Read/Write : R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Clock Enable
0 0 Asynchronous Internal clock/SCK pin functions
mode
as I/O port
Synchronous Internal clock/SCK pin functions
mode
as serial clock output
1 Asynchronous Internal clock/SCK pin functions
mode
as clock output*¹
Synchronous _{Internal clock/SCK pin functions}
mode
as serial clock output
1 0 Asynchronous External clock/SCK pin functions
mode
as clock input*²
Synchronous External clock/SCK pin functions
mode
as serial clock input
1 Asynchronous External clock/SCK pin functions
mode
as clock input*²
Synchronous External clock/SCK pin functions
mode
as serial clock input
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.
Transmit End Interrupt Enable
0 Transmit-end interrupt (TEI) request disabled
1 Transmit-end interrupt (TEI) request enabled
Multiprocessor Interrupt Enable
0 _{Multiprocessor interrupts disabled}
[Clearing conditions]
• When the MPIE bit is cleared to 0
• When data with MPB = 1 is received
1
Multiprocessor interrupts enabled
Receive-data-full 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
Receive Enable
0 Reception disabled
1 Reception enabled
Transmit Enable
0 Transmission disabled
1 Transmission 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
Transmit Interrupt Enable
0 Transmit-data-empty interrupt (TXI) request disabled
1 Transmit-data-empty interrupt (TXI) request enabled
Rev.6.00 Sep. 27, 2007 Page 1176 of 1268
REJ09B0220-0600