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Section 10 Serial Communication Interface
Rev. 6.00 Sep 12, 2006 page 297 of 526
REJ09B0326-0600
Serial Control Register 3 (SCR3)
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
SCR3 is an 8-bit register for selecting transmit or receive operation, the asynchronous mode clock
output, interrupt request enabling or disabling, and the transmit/receive clock source.
SCR3 can be read or written by the CPU at any time.
SCR3 is initialized to H'00 upon reset, and in standby, watch, subactive, or subsleep mode.
Bit 7
Transmit interrupt Enable (TIE):
Bit 7 selects enabling or disabling of the transmit data
empty interrupt request (TXI) when transmit data is transferred from the transmit data register
(TDR) to the transmit shift register (TSR), and bit TDRE in the serial status register (SSR) is set to
1.
TXI can be released by clearing bit TDRE or bit TIE to 0.
Bit 7: TIE
Description
0
Transmit data empty interrupt request (TXI) disabled
(initial value)
1
Transmit data empty interrupt request (TXI) enabled
Bit 6
Receive Interrupt Enable (RIE):
Bit 6 selects enabling or disabling of the receive data
full interrupt request (RXI) and the receive error interrupt request (ERI) when receive data is
transferred from the receive shift register (RSR) to the receive data register (RDR), and bit RDRF
in the serial status register (SSR) is set to 1. There are three kinds of receive error: overrun,
framing, and parity.
RXI and ERI can be released by clearing bit RDRF or the FER, PER, or OER error flag to 0, or by
clearing bit RIE to 0.
Bit 6: RIE
Description
0
Receive data full interrupt request (RXI) and receive error interrupt request
(ERI) disabled
(initial value)
1
Receive data full interrupt request (RXI) and receive error interrupt request
(ERI) enabled
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...