LAN9420-NU Standard Microsystems (SMSC), LAN9420-NU Datasheet - Page 105
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LAN9420-NU
Manufacturer Part Number
LAN9420-NU
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LAN9420-NU.pdf
(170 pages)
Specifications of LAN9420-NU
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
3.6V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
128
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LAN9420-NU
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
LAN9420-NU
Manufacturer:
SMSC
Quantity:
20 000
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Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
SMSC LAN9420/LAN9420i
4.3.2
BITS
31:0
Transmit Poll Demand (TPD)
When written with any value, the DMAC will check for frames to be
transmitted. If no descriptor is available, the transmit process returns to the
suspended state and bit 2 of the DMAC_STATUS register (transmit buffer
unavailable - TU) is not asserted. A write to this register is only effective if
the transmit process is in the suspended state. A Read of this register will
timeout and invalid data will be returned.
Transmit Poll Demand Register (TX_POLL_DEMAND)
This register enables the TX DMA engine to check for new descriptors.
Offset:
DESCRIPTION
0004h
DATASHEET
105
Size:
32 bits
TYPE
WO
Revision 1.4 (12-17-08)
DEFAULT
-
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