SH7763 Datasheet, PDF (916/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 23 Gigabit Ethernet Controller (GETHER)
Bit
7 to 0
Initial
Bit Name Value
PRISL0[7:0] All 0
R/W Description
R/W These bits set the threshold of the port 1-to-0 relay
FIFO size in 64-byte units in the event of switching to
relay priority when bits PRIMD0[2:0] are set to H'4 or
H'5.
H'00: 0 byte
H'01: 64 bytes
H'02: 128 bytes
:
:
H'5E: 6,016 bytes
H'5F: 6,080 bytes
Settings are disabled for H'60 to H'FF.
When H'00 is set in these bits, relay always takes
priority. When the value set is equal to or above the
port 1-to-0 relay FIFO size set by bits FCM[2:0] in
TSU_FCM, if bits PRIMD0[2:0] are H'4, round robin will
always be set. If bits PRIMD0[2:0] are H'5,
transmission always takes priority.
Rev. 1.00 Oct. 01, 2007 Page 850 of 1956
REJ09B0256-0100