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IXF1104 4-Port Gigabit Ethernet Media Access Controller
200 Datasheet
Document Number: 278757
Revision Number: 007
Revision Date: March 25, 2004
Table 128. RX FIFO Transfer Threshold Port 0 ($0x5B8)
Bit Name Description Type Default
Register Description:
RX FIFO transfer threshold for port 0 in 8-byte location. 0x000000BE
31:12 Reserved Reserved RO 0x00000
11:0
RX FIFO Transfer
Threshold - Port 0
RX FIFO transfer threshold for port 0. This must
be less than the RX FIFO High water mark.
User definable control register that sets the
threshold where a packet starts transitioning to the
SPI3 interface from the RX FIFO before the EOP
is received. Packets received in the RX FIFO
below this threshold are treated as store and
forward.
NOTE: Do not program the RX FIFO transfer
threshold below a setting of 0xBE
(1520bytes).
R/W 0x0BE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 129. RX FIFO Transfer Threshold Port 1 ($0x5B9)
Bit Name Description Type Default
Register Description:
RX FIFO transfer threshold for port 1in 8-byte location. 0x000000BE
31:12 Reserved Reserved RO 0x00000
11:0
RX FIFO Transfer
Threshold - Port 1
RX FIFO transfer threshold for port 1. This must
be less than the RX FIFO High watermark.
User definable control register that sets the
threshold where a packet starts transitioning to
the SPI3 interface from the RX FIFO before the
EOP is received. Packets received in the RX
FIFO below this threshold are treated as store
and forward.
NOTE: Do not program the RX FIFO transfer
threshold below a setting of 0xBE
(1520bytes).
R/W 0x0BE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write