r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1114

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

21. Serial Communication Interface with FIFO (SCIF)
5. When modem control is enabled, the SCIF_RTS signal is output when SCFRDR is empty.
Figure 21.14 shows an example of the operation when modem control is used.
Rev.1.00 Jan. 10, 2008 Page 1084 of 1658
REJ09B0261-0100
When SCIF_RTS is 0, reception is possible. When SCIF_RTS is 1, this indicates that
SCFRDR contains bytes of data equal to or more than the SCIF_RTS output active trigger
count. The SCIF_RTS output active trigger value is specified by bits 10 to 8 in SCFCR. For
details, see section 21.3.9, FIFO Control Register n (SCFCR). In addition, SCIF_RTS is also 1
when the RE bit in SCSCR is cleared to 0.
SCIF_RXD
SCIF_RTS
Serial data
Figure 21.14 Example of Operation Using Modem Control (SCIF_RTS)
Start
bit
0
D0
D1 D2
(Only in Channels 1 and 2)
D7 0/1 1
Parity
bit
Stop
bit
Start
bit
0