lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 179
lan9312
Manufacturer Part Number
lan9312
Description
Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9312.pdf
(458 pages)
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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
14.2.1.4
31:24
23:16
BITS
15:8
7:0
TX Data Available Level
The value in this field sets the level, in number of 64 Byte blocks, at which
the
TX Data FIFO free space is greater than this value, a
Available Interrupt (TDFA)
(INT_STS).
TX Status Level
The value in this field sets the level, in number of DWORD’s, at which the
TX Status FIFO Level Interrupt (TSFL)
Status FIFO used space is greater than this value, a
Interrupt (TSFL)
(INT_STS).
RX Space Available Level
The value in this field sets the level, in number of 64 Byte blocks, at which
the
Data FIFO free space is less than this value, a
(RDFL)
RX Status Level
The value in this field sets the level, in number of DWORD’s, at which the
RX Status FIFO Level Interrupt (RSFL)
Status FIFO used space is greater than this value, a
Interrupt (RSFL)
(INT_STS).
FIFO Level Interrupt Register (FIFO_INT)
This read/write register configures the limits where the RX/TX Data and Status FIFO’s will generate
system interrupts.
TX Data FIFO Available Interrupt (TDFA)
RX Data FIFO Level Interrupt (RDFL)
will be generated in the
Offset:
will be generated in the
will be generated in the
will be generated in the
068h
DESCRIPTION
Interrupt Status Register
DATASHEET
will be generated. When the TX
will be generated. When the RX
Interrupt Status Register
Interrupt Status Register
will be generated. When the RX
179
will be generated. When the
RX Data FIFO Level Interrupt
Size:
Interrupt Status Register
RX Status FIFO Level
TX Status FIFO Level
TX Data FIFO
(INT_STS).
32 bits
TYPE
R/W
R/W
R/W
R/W
Revision 1.2 (04-08-08)
DEFAULT
48h
00h
00h
00h
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