HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 402

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 14 Serial Communication Interface with FIFO (SCIF)
Figure 14.5 shows an example of the operation for transmission.
4. When modem control is enabled, transmission can be stopped and restarted in accordance with
Rev. 6.00 Jun. 12, 2007 Page 370 of 610
REJ09B0131-0600
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.
Figure 14.6 shows an example of the operation when modem control is used (only for
channel 0).
Serial data
Serial
data
TDFE
TEND
CTS
TxD
1
TXI interrupt
request
Figure 14.6 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 14.5 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
1
1
Start
bit
0
D0
D1
Data
Start
bit
0
D7
D0 D1
Parity
bit
0/1
Stop
bit
1
D7 0/1
Idle state
(mark state)
1