HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 764
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 19 Serial Communication Interface with FIFO (SCIF)
19.3.9
The FIFO control register (SCFCR) resets the quantity of data in the transmit and receive FIFO
registers, sets the trigger data quantity, and contains an enable bit for loop-back testing. SCFCR
can always be read and written to by the CPU. It is initialized to H'0000 by a power-on reset.
Rev. 4.00 Sep. 14, 2005 Page 714 of 982
REJ09B0023-0400
Bit
15 to 11
10
9
8
FIFO Control Register (SCFCR)
Bit Name
—
RSTRG2
RSTRG1
RSTRG0
Initial
value
All 0
0
0
0
R/W
R
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
RTS Output Active Trigger
When the quantity of receive data in receive FIFO
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
Note:
Set the trigger number to 1 when the receive
data is transferred by the DMAC in
synchronous mode. If the set trigger number is
other than 1, the receive data remains in
SCFRDR should be read by the CPU.
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