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LAN9312 Datasheet(PDF) 184 Page - SMSC Corporation

Part # LAN9312
Description  High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
PDF  458 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LAN9312 Datasheet(HTML) 184 Page - SMSC Corporation

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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Revision 1.2 (04-08-08)
184
SMSC LAN9312
DATASHEET
14.2.2.4
RX FIFO Information Register (RX_FIFO_INF)
This register contains the indication of used space in the RX FIFO’s.
Offset:
07Ch
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:24
RESERVED
RO
-
23:16
RX Status FIFO Used Space (RXSUSED)
This field indicates the amount of space, in DWORD’s, currently used in the
RX Status FIFO.
RO
0b
15:0
RX Data FIFO Used Space (RXDUSED)
This field indicates the amount of space, in bytes, used in the RX Data FIFO.
For each receive frame, the field is incremented by the length of the receive
data. In cases where the payload does not end on a DWORD boundary, the
total will be rounded up to the nearest DWORD.
RO
0b



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