LAN9210-ABZJ SMSC, LAN9210-ABZJ Datasheet - Page 90
LAN9210-ABZJ
Manufacturer Part Number
LAN9210-ABZJ
Description
IC ETHERNET CTLR SGL CHIP 56-QFN
Manufacturer
SMSC
Datasheet
1.LAN9210-ABZJ.pdf
(147 pages)
Specifications of LAN9210-ABZJ
Controller Type
Ethernet Controller
Interface
Serial EEPROM
Voltage - Supply
3.3V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
56-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Other names
638-1048-6
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LAN9210-ABZJ
Manufacturer:
Standard
Quantity:
2 500
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Revision 2.7 (03-15-10)
5.3.10
BITS
30-0
31
RX Data FIFO Fast Forward (RX_FFWD): Writing a ‘1’ to this bit causes
the RX data FIFO to fast-forward to the start of the next frame. This bit will
remain high until the RX data FIFO fast-forward operation has completed.
No reads should be issued to the RX data FIFO while this bit is high.
Note:
Reserved
In addition to the host-accessible FIFOs, the MAC Interface Layer (MIL) contains an additional 2K
bytes of TX, and 128 bytes of RX FIFO buffering. These sizes are fixed, and cannot be adjusted by
the host.
As space in the TX MIL (Mac Interface Layer) FIFO frees, data is moved into it from the TX data FIFO.
Depending on the size of the frames to be transmitted, the MIL can hold up to two Ethernet frames.
This is in addition to any TX data that may be queued in the TX data FIFO.
Conversely, as data is received by the LAN9210, it is moved from the MAC to the RX MIL FIFO, and
then into the RX data FIFO. When the RX data FIFO fills up, data will continue to collect in the RX
MIL FIFO. If the RX MIL FIFO fills up and overruns, subsequent RX frames will be lost until room is
made in the RX data FIFO. For each frame of data that is lost, the RX Dropped Frames Counter
(RX_DROP) is incremented.
RX and TX MIL FIFO levels are not visible to the host processor. RX and TX MIL FIFOs operate
independent of the TX data and RX data and status FIFOs. FIFO levels set for the RX and TX data
and Status FIFOs do not take into consideration the MIL FIFOs.
RX_DP_CTRL—Receive Datapath Control Register
This register is used to discard unwanted receive frames.
Offset:
Please refer to section “Receive Data FIFO Fast Forward” on
page 62 for detailed information regarding the use of RX_FFWD.
DESCRIPTION
78h
DATASHEET
90
Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support
Size:
32 bits
TYPE
R/W
SC
RO
DEFAULT
SMSC LAN9210
Datasheet
0b
-
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