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SH7018 Datasheet(PDF) 271 Page - Renesas Technology Corp

Part # SH7018
Description  SuperH??RISC engine
PDF  431 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7018 Datasheet(HTML) 271 Page - Renesas Technology Corp

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12.4
Interrupt
The SCI1 has four interrupt sources: transmit-end (TEI), receive-error (ERI), receive-data-full
(RxI), and transmit-data-empty (TxI). Table 12.12 lists the interrupt sources and indicates their
priority. These interrupts can be enabled and disabled by the TIE, RIE, and TEIE bits in the serial
control register (SCR1). Each interrupt request is sent separately to the interrupt controller.
TxI is requested when the TDRE bit in the serial status register (SSR1) is set to 1.
RxI is requested when the RDRF bit in the SSR1 is set to 1.
ERI is requested when the ORER, FER, or PER bit in the SSR1 is set to 1.
TEI is requested when the TEND bit in the SSR1 is set to 1.
Where the TxI interrupt indicates that transmit data writing is enabled, the TEI interrupt indicates
that the transmit operation has ended.
Table 12.12 SCI1 Interrupt Sources
Interrupt Source
Description
Priority
ERI
Receive error (ORER, PER, or FER)
High
RxI
Receive data full (RDRF)
TxI
Transmit data empty (TDRE)
TEI
Transmit end (TEND)
Low



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