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DP83936AVF Datasheet(PDF) 35 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83936AVF
Description  Full Duplex SONICTM-T Systems-Oriented Network Interface Controller with Twisted Pair Interface
PDF  104 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83936AVF Datasheet(HTML) 35 Page - National Semiconductor (TI)

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60 SONIC-T Registers (Continued)
62 FULL DUPLEX OPERATION
The SONIC-T can be configured to allow Full Duplex opera-
tion All other operation of the SONIC-T is the same except
that collisions are ignored
621 Configuring the SONIC-T DCR2
In order to use the SONIC-T in full duplex mode the HD and
FD bits must be set in DCR2
1 Put the SONIC-T in software reset by setting RST bit (bit
7) in the CR
2 Enable Full Duplex operation by setting the FD bit (bit 5)
in the DCR2
3 Disable Heartbeat detection by setting the HD bit (bit 11)
in the DCR2
4 Take the SONIC-T out of software reset by clearing the
RST bit (bit 7) in the CR
622 Increased Buffering
In order to avoid Receive Buffer Exhaustions (RBE’s) due to
increased traffic in Full Duplex mode it is recommended
that the number if entries in the RRA be increased to be
greater than what typically is used for Half Duplex (see Sec-
tion 5442 Initializing the RRA)
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