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DP83902A Datasheet(PDF) 20 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83902A
Description  ST-NICTM Serial Network Interface Controller for Twisted Pair
PDF  70 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83902A Datasheet(HTML) 20 Page - National Semiconductor (TI)

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70 Packet Reception (Continued)
BUFFER RECOVERY FOR REJECTED PACKETS
If the packet is a runt packet or contains CRC or Frame
Alignment errors it is rejected The buffer management log-
ic resets the DMA back to the first buffer page used to store
the packet (pointed to by CURR) recovering all buffers that
had been used to store the rejected packet This operation
will not be performed if the ST-NIC is programmed to accept
either runt packets or packets with CRC or Frame Alignment
errors The received CRC is always stored in buffer memory
after the last byte of received data for the packet
Error Recovery
If the packet is rejected as shown the DMA is restored by
the ST-NIC by reprogramming the DMA starting address
pointed to by the Current Page Register
Termination of Receive PacketPacket Reject
TLF11157 – 15
20



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