HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 779
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Figure 19.5 shows an example of the operation for transmission.
4. When modem control is enabled, transmission can be stopped and restarted in accordance with
Figure 19.6 shows an example of the operation when modem control is used.
the CTS input value. When CTS is set to 1, if transmission is in progress, the line goes to the
mark state after transmission of one frame. When CTS is set to 0, the next transmit data is
output starting from the start bit.
Serial data
Serial
data
TDFE
TEND
CTS
TxD
1
TXI interrupt
request
Figure 19.6 Example of Operation Using Modem Control (CTS)
Start
bit
0
Start
bit
0
Data written to SCFTDR
and TDFE flag read as 1
then cleared to 0 by TXI
interrupt handler
D0
D0
Figure 19.5 Example of Transmit Operation
D1
One frame
D1
Data
(8-Bit Data, Parity, One Stop Bit)
D7
D7 0/1
Drive high before stop bit
Parity
bit
Parity
bit
0/1
TXI interrupt
request
Stop
bit
Stop
bit
Section 19 Serial Communication Interface with FIFO (SCIF)
1
1
Start
bit
0
D0
D1
Data
Rev. 4.00 Sep. 14, 2005 Page 729 of 982
Start
bit
0
D7
D0 D1
Parity
bit
0/1
Stop
bit
1
D7 0/1
Idle state
(mark state)
REJ09B0023-0400
1
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