r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1094

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

21. Serial Communication Interface with FIFO (SCIF)
21.3.10 Transmit FIFO Data Count Register n (SCTFDR)
SCTFDR is a 16-bit register that indicates the number of transmit data bytes stored in SCFTDR.
SCTFDR can always be read from the CPU.
Rev.1.00 Jan. 10, 2008 Page 1064 of 1658
REJ09B0261-0100
Initial value:
Bit
15 to 7
6 to 0
R/W:
BIt:
Bit Name
—
T6 to T0
15
⎯
R
0
14
⎯
R
0
13
⎯
R
0
Initial
Value
All 0
All 0
12
⎯
R
0
11
⎯
R
0
R/W
R
R
10
⎯
R
0
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
These bits show the number of untransmitted data
bytes in SCFTDR. A value of H'00 indicates that there
is no transmit data, and a value of H'40 indicates that
SCFTDR is full of the maximum number (64 bytes) of
transmit data.
⎯
R
9
0
⎯
R
8
0
⎯
R
7
0
T6
R
6
0
T5
R
5
0
T4
R
4
0
T3
R
3
0
T2
R
2
0
T1
R
1
0
T0
R
0
0