SH7764 Datasheet, PDF (576/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 15 Serial Communication Interface with FIFO (SCIF)
Initial
Bit
Bit Name Value R/W Description
5, 4
TTRG[1:0] 00
R/W Transmit FIFO Data Trigger
Set the quantity of remaining transmit data which sets
the transmit FIFO data register empty (TDFE) flag in the
serial status register (SCFSR). The TDFE flag is set to 1
when the quantity of transmit data in the transmit FIFO
data register (SCFTDR) becomes less than the set
trigger number shown below.
00: 8 (8)*
01: 4 (12)*
10: 2 (14)*
11: 0 (16)*
Note: * Values in parentheses mean the number of
empty bytes in SCFTDR when the TDFE
flag is set to 1.
3
MCE
0
R/W Modem Control Enable
Enables modem control signals CTS and RTS.
For channels 0 to 2 in clock synchronous mode, MCE bit
should always be 0.
0: Modem signal disabled*
1: Modem signal enabled
Note: * CTS is fixed at active 0 regardless of the
input value, and RTS is also fixed at 0.
2
TFRST
0
R/W Transmit FIFO Data Register Reset
Disables the transmit data in the transmit FIFO data
register and resets the data to the empty state.
0: Reset operation disabled*
1: Reset operation enabled
Note: * Reset operation is executed by a power-on
reset.
1
RFRST
0
R/W Receive FIFO Data Register Reset
Disables the receive data in the receive FIFO data
register and resets the data to the empty state.
0: Reset operation disabled*
1: Reset operation enabled
Note: * Reset operation is executed by a power-on
reset.
Rev. 1.00 Nov. 22, 2007 Page 520 of 1692
REJ09B0360-0100