Hitachi H8/3008 Hardware Manual page 589

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