HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 497

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit
10
9
8
7
6
5
4
Bit Name
RSTRG2
RSTRG1
RSTRG0
RTRG1
RTRG0
TTRG1
TTRG0
Initial
Value
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
RTS Output Active Trigger
The RTS signal goes high when the number of receive
data bytes in SCFRDR is equal to or greater than the
trigger set number shown in below.
000: 63
001: 1
010: 8
011: 16
100: 32
101: 48
110: 54
111: 60
Receive FIFO Data Number Trigger
Set the number of receive data bytes that sets the
receive data full (RDF) flag in the serial status register
(SCSSR).
The RDF flag is set when the number of receive data
bytes in SCFRDR is equal to or greater than the trigger
set number shown in below.
00: 1
01: 16
10: 32
11: 48
Transmit FIFO Data Number Trigger
Set the number of remaining transmit data bytes that
sets the transmit FIFO data register empty (TDFE) flag
in the serial status register (SCSSR).
The TDFE flag is set when, as the result of a transmit
operation, the number of transmit data bytes in the
transmit FIFO data register (SCFTDR) falls to or below
the trigger set number shown in below.
00: 32 (32)
01: 16 (48)
10: 2 (62)
11: 0 (64)
Note: The values in parentheses are the number of
empty bytes in SCFTDR when the flag is set.
Rev. 1.00, 02/04, page 459 of 804