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DP83916 Datasheet(PDF) 14 Page - National Semiconductor (TI) |
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DP83916 Datasheet(HTML) 14 Page - National Semiconductor (TI) |
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14 / 96 page  30 Buffer Management (Continued) TABLE 3-1 Descriptor Abbreviations TRANSMIT AND RECEIVE AREAS RRA Receive Resource Area RDA Receive Descriptor Area RBA Receive Buffer Area TDA Transmit Descriptor Area TBA Transmit Buffer Area BUFFER MANAGEMENT REGISTERS RSA Resource Start Area Register REA Resource End Area Register RRP Resource Read Pointer Register RWP Resource Write Pointer Register CRDA Current Receive Descriptor Address Register CRBA01 Current Receive Buffer Address Register TCBA01 Temporary Current Buffer Address Register RBWC01 Remaining Buffer Word Count Register TRBWC01 Temporary Remaining Buffer Word Count Register EOBC End of Buffer Count Register TPS Transmit Packet Size Register TSA01 Transmit Start Address Register CTDA Current Transmit Descriptor Address Register BUFFER MANAGEMENT REGISTERS (Continued) TFC Transmit Fragment Count Register TFS Transmit Fragment Size Register UTDA Upper Transmit Descriptor Address Register URRA Upper Receive Resource Address Register URDA Upper Receive Descriptor Address Register TRANSMIT AND RECEIVE DESCRIPTORS RXrsrcbuff ptr01 Buffer Pointer Field in the RRA RXrsrcbuff wc01 Buffer Word Count Fields in the RRA RXpktstatus Receive Status Field in the RDA RXpktbyte count Packet Byte Count Field in the RDA RXpktbuff ptr01 Buffer Pointer Fields in the RDA RXpktlink Receive Descriptor Link Field in RDA RXpktin use ‘‘In Use’’ Field in RDA TXpktfrag count Fragment Count Field in TDA TXpktpkt size Packet Size Field in TDA TXpktpkt ptr01 Packet Pointer Fields in TDA TXpktfrag size Fragment Size Field in TDA TXpktlink Transmit Descriptor Link Field in TDA TLF11722 – 10 FIGURE 3-1 Transmit and Receive Descriptor Area Pointers 14 |
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