LAN9220-ABZJ SMSC, LAN9220-ABZJ Datasheet - Page 64

• Manufacturer Part Number: LAN9220-ABZJ
• Description: Ethernet ICs 16Bit Single Chip Ethernet Controller
• Manufacturer: SMSC
• Type: Single Chip MAC and PHY Controllerr

Specifications of LAN9220-ABZJ

• Ethernet Connection Type: 10 Base-T, 100 Base-TX
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Product: Ethernet Controllers
• Number Of Transceivers: 1
• Standard Supported: 802.3, 802.3u
• Data Rate: 10 MB, 100 MB
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 0 V
• Supply Current (max): 85 mA
• Maximum Operating Temperature: + 70 C
• Package / Case: TQFP-100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 2.7 (03-15-10)
3.13.2
RX Packet Format
The RX status words can be read from the RX status FIFO port, while the RX data packets can be
read from the RX data FIFO. RX data packets are formatted in a specific manner before the host can
read them as shown in
status word from the RX status FIFO, to ascertain the data size and any error conditions.
Figure 3.21
appended to the data payload is treated just as an additional 4-bytes within the RX Data FIFO. The
RX checksum is enabled by setting the RXCOE_EN bit in the
Control
Checksum Offload Engine
Register. For more information on the RX checksum, refer to
shows the RX packet format when the RX checksum is enabled. The RX checksum data
Host Read
Order
Last
2nd
1st
Figure
(RXCOE)".
Figure 3.20 RX Packet Format
16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
3.20. It is assumed that the host has previously read the associated
31
ofs + First Data DWORD
DATASHEET
Optional offset DWORDn
Optional offset DWORD0
Optional Pad DWORD0
Optional Pad DWORDn
Last Data DWORD
64
.
.
.
.
.
.
.
.
0
COE_CR—Checksum Offload Engine
Section 3.6.1, "Receive
SMSC LAN9220
Datasheet