SH7205 Datasheet, PDF (796/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 16 Serial Communication Interface with FIFO (SCIF)
Bit
10 to 8
7, 6
Bit Name
Initial
Value R/W
RSTRG[2:0] 000 R/W
RTRG[1:0] 00
R/W
Description
RTS Output Active Trigger
When the quantity of receive data in receive FIFO data
register (SCFRDR) becomes more than the number
shown below, RTS signal is set to high.
000: 15
001: 1
010: 4
011: 6
100: 8
101: 10
110: 12
111: 14
Receive FIFO Data Trigger
Set the quantity of receive data which sets the receive
data full (RDF) flag in the serial status register (SCFSR).
The RDF flag is set to 1 when the quantity of receive data
stored in the receive FIFO register (SCFRDR) is
increased more than the set trigger number shown below.
• Asynchronous mode • Clock synchronous mode
00: 1
00: 1
01: 4
01: 2
10: 8
10: 8
11: 14
11: 14
Note:
In clock synchronous mode, to transfer the
receive data using DMAC, set the receive trigger
number to 1. If set to other than 1, CPU must
read the receive data left in SCFRDR.
Rev. 1.00 Mar. 25, 2008 Page 764 of 1868
REJ09B0372-0100