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SCR—Serial Control Register
7
6
Bit
TIE
RIE
Initial value
0
0
Read/Write
R/W
R/W
Receive interrupt enable
0
1
Transmit interrupt enable
0
Transmit-data-empty interrupt request (TXI) is disabled
1
Transmit-data-empty interrupt request (TXI) is enabled
5
4
TE
RE
MPIE
0
0
R/W
R/W
R/W
Receive enable
Receiving is
0
disabled
Receiving is
1
enabled
Transmit enable
0
Transmitting is disabled
1
Transmitting is enabled
Multiprocessor interrupt enable
0
1
Receive-data-full (RXI) and receive-error (ERI) interrupt requests are disabled
Receive-data-full (RXI) and receive-error (ERI) interrupt requests are enabled
H'FFFB2
3
2
1
TEIE
CKE1
0
0
0
R/W
R/W
Clock enable 1 and 0
(for serial communication interface)
Bit 1
Bit 0
CKE1
CKE0
Asynchronous mode
0
Synchronous mode
0
Asynchronous mode
1
Synchronous mode
Asynchronous mode
0
Synchronous mode
1
Asynchronous mode
1
Synchronous mode
Clock enable 1 and 0 (for smart card interface)
SMR
Bit 1
Bit 0
GM
CKE1
CKE0
0
0
0
1
1
Transmit-end interrupt enable
0
Transmit-end interrupt requests (TEI) are disabled
1
Transmit-end interrupt requests (TEI) are enabled
Multiprocessor interrupts are disabled (normal receive operation)
Multiprocessor interrupts are enabled
SCI0
0
CKE0
0
R/W
Description
Internal clock: SCK pin
available for generic I/O
Internal clock: SCK pin
used for serial clock output
Internal clock: SCK pin
used for clock output
Internal clock: SCK pin
used for serial clock output
External clock: SCK pin
used for clock input
External clock: SCK pin
used for serial clock input
External clock: SCK pin
used for clock input
External clock: SCK pin
used for serial clock input
Description
0
SCK pin available for generic I/O
SCK pin used for clock output
1
0
SCK pin output fixed low
SCK pin used for clock output
1
0
SCK pin output fixed high
SCK pin used for clock output
1
881
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