LAN9118MT Standard Microsystems (SMSC), LAN9118MT Datasheet - Page 66
LAN9118MT
Manufacturer Part Number
LAN9118MT
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LAN9118MT.pdf
(170 pages)
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Revision 1.0 (03-17-05)
4.13.1.1
Receive Data FIFO Fast Forward
The RX data path implements an automatic data discard function. Using the RX data FIFO Fast
Forward bit (RX_FFWD) in the RX_DP_CTRL register, the host can instruct the LAN9118 to skip the
packet at the head of the RX data FIFO. The RX data FIFO pointers are automatically incremented to
the beginning of the next RX packet.
Figure 4.16 host Receive Routine using Interrupts
Figure 4.17 Host Receive Routine with Polling
Last Packet
Last Packet
DATASHEET
RX_FIFO_
Read RX
Read RX
DWORD
Read RX
Read RX
DWORD
Packet
Packet
Status
Status
Read
Idle
init
INf
init
66
High-Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Valid Status DWORD
RX Interrupt
Not Last Packet
Not Last Packet
SMSC LAN9118
Datasheet
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