HD6417750RF240DV Datasheet, PDF (801/1132 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7750 Series

SH7750, SH7750S, SH7750R Group
Section 16 Serial Communication Interface with FIFO (SCIF)
16.2.10 FIFO Data Count Register (SCFDR2)
SCFDR2 is a 16-bit register that indicates the number of data bytes stored in SCFTDR2 and
SCFRDR2.
The upper 8 bits show the number of transmit data bytes in SCFTDR2, and the lower 8 bits show
the number of receive data bytes in SCFRDR2.
SCFDR2 can be read by the CPU at all times.
Bit: 15
14
13
12
11
10
9
8
—
—
—
T4
T3
T2
T1
T0
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
These bits show the number of untransmitted data bytes in SCFTDR2. A value of H'00 indicates
that there is no transmit data, and a value of H'10 indicates that SCFTDR2 is full of transmit data.
Bit: 7
6
5
4
3
2
1
0
—
—
—
R4
R3
R2
R1
R0
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
These bits show the number of receive data bytes in SCFRDR2. A value of H'00 indicates that
there is no receive data, and a value of H'10 indicates that SCFRDR2 is full of receive data.
R01UH0456EJ0702 Rev. 7.02
Sep 24, 2013
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