H8SLASH3021 datasheet(655/712 Pages) RENESAS

655 / 712 page

Appendix B. Internal I/O Register Field

Rev.2.00 Mar. 22, 2007 Page 631 of 684

REJ09B0352-0200

SCR—Serial Control Register

H'B2

SCI0

Bit

Initial value

Read/Write

TIE

R/W

RIE

R/W

MPIE

R/W

CKE0

R/W

TEIE

R/W

CKE1

R/W

Transmit interrupt enable

Transmit-data-empty interrupt request (TXI) is disabled

Transmit-data-empty interrupt request (TXI) is enabled

Receive interrupt enable

Receive-data-full (RXI) and receive-error (ERI) interrupt requests are disabled

Receive-data-full (RXI) and receive-error (ERI) interrupt requests are enabled

Transmit enable

Clock enable 1 and 0

CKE1

Multiprocessor interrupt enable

Clock Selection and Output

Asynchronous mode

Synchronous mode

Asynchronous mode

Synchronous mode

Asynchronous mode

Synchronous mode

Asynchronous mode

Bit 1

CKE2

Bit 2

Receive enable

Synchronous mode

Multiprocessor interrupts are disabled (normal receive operation)

Multiprocessor interrupts are enabled

Receiving is disabled

Receiving is enabled

Transmit-end interrupt enable

Transmitting is disabled

Transmitting is enabled

Transmit-end interrupt requests (TEI) are disabled

Transmit-end interrupt requests (TEI) are enabled

Internal clock, SCK pin available for generic input/output

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

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