r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1095

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

21.3.11 Receive FIFO Data Count Register n (SCRFDR)
SCRFDR is a 16-bit register that indicates the number of receive data bytes stored in SCFRDR.
SCRFDR can always be read from the CPU.
Initial value:
Bit
15 to 7
6 to 0
R/W:
BIt:
Bit Name
—
R6 to R0
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.
SCFRDR. A value of H'00 indicates that there is no
receive data, and a value of H'40 indicates that
SCFRDR is full of receive data.
These bits show the number of receive data bytes in
⎯
R
9
0
21. Serial Communication Interface with FIFO (SCIF)
⎯
R
8
0
⎯
R
7
0
Rev.1.00 Jan. 10, 2008 Page 1065 of 1658
R6
R
6
0
R5
R
5
0
R4
R
4
0
R3
R
3
0
REJ09B0261-0100
R2
R
2
0
R1
R
1
0
R0
R
0
0