HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 378

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

12. Serial Communication Interface
Bit 4—Receive Enable (RE): Enables or disables the start of SCI serial receiving operations.
Bit 4
RE
0
1
Notes: 1. Clearing the RE bit to 0 does not affect the RDRF, FER, PER, and ORER flags. These
Bit 3—Multiprocessor Interrupt Enable (MPIE): Enables or disables multiprocessor interrupts.
The MPIE bit setting is valid only in asynchronous mode, and only if the MP bit is set to 1 in
SMR. The MPIE bit setting is ignored in synchronous mode or when the MP bit is cleared to 0.
Bit 3
MPIE
0
1
Note:
Rev.4.00 Aug. 20, 2007 Page 334 of 638
REJ09B0395-0400
2. In the enabled state, serial receiving starts when a start bit is detected in asynchronous
* The SCI does not transfer receive data from RSR to RDR, does not detect receive
flags retain their previous values.
mode, or serial clock input is detected in synchronous mode. Select the receive format
in SMR before setting the RE bit to 1.
errors, and does not set the RDRF, FER, and ORER flags in SSR. When it receives
data in which MPB = 1, the SCI sets the MPB bit to 1 in SSR, automatically clears the
MPIE bit to 0, enables RXI and ERI interrupts (if the TIE and RIE bits in SCR are set to
1), and allows the FER and ORER flags to be set.
Description
Receiving disabled*
Receiving enabled*
Description
Multiprocessor interrupts are disabled (normal receive operation) (Initial value)
[Clearing conditions]
•
•
Multiprocessor interrupts are enabled*
Receive-data-full interrupts (RXI), receive-error interrupts (ERI), and setting of
the RDRF, FER, and ORER status flags in SSR are disabled until data with the
multiprocessor bit set to 1 is received.
The MPIE bit is cleared to 0
MPB = 1 in received data
2
1
(Initial value)