r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1000

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 23 Gigabit Ethernet Controller (GETHER)
Rev. 1.00 Oct. 01, 2007 Page 934 of 1956
REJ09B0256-0100
Bit
15 to 8
7 to 0
Bit Name

RFD[7:0]
Initial
Value
All 0
H'FF
R/W
R
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Receive FIFO Overflow Alert Signal Output Threshold
H'00: When (256 − 32) bytes of data is stored in the
H'01: When (512 − 32) bytes of data is stored in the
H'06: When (1,792 − 32) bytes of data is stored in the
H'07: When (2,048 − 64) bytes of data is stored in the
:
receive FIFO
receive FIFO
receive FIFO
receive FIFO
: