LAN9221-ABZJ Standard Microsystems (SMSC), LAN9221-ABZJ Datasheet - Page 88

• Manufacturer Part Number: LAN9221-ABZJ
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9221-ABZJ

• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Operating Supply Voltage (min): 1.62V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 56
• Lead Free Status / RoHS Status: Compliant

Revision 2.7 (03-15-10)
5.3.8
31-16
BITS
13-3
15
14
2
1
0
Reserved.
Force TX Status Discard (TXS_DUMP). This self-clearing bit clears the TX
status FIFO of all pending status DWORD’s. When a ‘1’ is written, the TX
status pointers are cleared to zero.
Force TX Data Discard (TXD_DUMP). This self-clearing bit clears the TX
data FIFO of all pending data. When a ‘1’ is written, the TX data pointers
are cleared to zero.
Reserved
TX Status Allow Overrun (TXSAO). When this bit is cleared, data
transmission is suspended if the TX Status FIFO becomes full. Setting this
bit high allows the transmitter to continue operation with a full TX Status
FIFO.
Note:
Transmitter Enable (TX_ON). When this bit is set (1), the transmitter is
enabled. Any data in the TX FIFO will be sent. This bit is cleared
automatically when STOP_TX is set and the transmitter is halted.
Stop Transmitter (STOP_TX). When this bit is set (1), the transmitter will
finish the current frame, and will then stop transmitting. When the transmitter
has stopped this bit will clear. All writes to this bit are ignored while this bit
is high.
TX_CFG—Transmit Configuration Register
This register controls the transmit functions on the LAN9221/LAN9221i Ethernet Controller.
Offset:
This bit does not affect the operation of the TX Status FIFO Full
interrupt.
DESCRIPTION
70h
DATASHEET
88
High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Size:
32 bits
TYPE
R/W
R/W
RO
SC
SC
RO
SC
SMSC LAN9221/LAN9221i
DEFAULT
Datasheet
0
0
0
0
0
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-