DP83932CVF25 National Semiconductor, DP83932CVF25 Datasheet - Page 14
DP83932CVF25
Manufacturer Part Number
DP83932CVF25
Description
Manufacturer
National Semiconductor
Datasheet
1.DP83932CVF25.pdf
(98 pages)
Specifications of DP83932CVF25
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.75V
Operating Supply Voltage (max)
5.25V
Mounting
Surface Mount
Pin Count
132
Lead Free Status / RoHS Status
Not Compliant
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3 0 Buffer Management
TRANSMIT AND RECEIVE AREAS
RRA
RDA
RBA
TDA
TBA
BUFFER MANAGEMENT REGISTERS
RSA
REA
RRP
RWP
CRDA
CRBA0 1
TCBA0 1
RBWC0 1
TRBWC0 1
EOBC
TPS
TSA0 1
CTDA
Receive Resource Area
Receive Descriptor Area
Receive Buffer Area
Transmit Descriptor Area
Transmit Buffer Area
Resource Start Area Register
Resource End Area Register
Resource Read Pointer Register
Resource Write Pointer Register
Current Receive Descriptor
Address Register
Current Receive Buffer Address
Register
Temporary Current Buffer Address
Register
Remaining Buffer Word Count
Register
Temporary Remaining Buffer Word
Count Register
End of Buffer Count Register
Transmit Packet Size Register
Transmit Start Address Register
Current Transmit Descriptor
Address Register
FIGURE 3-1 Transmit and Receive Descriptor Pointers
(Continued)
TABLE 3-1 Descriptor Abbreviations
14
BUFFER MANAGEMENT REGISTERS (Continued)
TFC
TFS
UTDA
URRA
URDA
TRANSMIT AND RECEIVE DESCRIPTORS
RXrsrc buff ptr0 1
RXrsrc buff wc0 1
RXpkt status
RXpkt byte count
RXpkt buff ptr0 1
RXpkt link
RXpkt in use
TXpkt frag count
TXpkt pkt size
TXpkt pkt ptr0 1
TXpkt frag size
TXpkt link
Transmit Fragment Count Register
Transmit Fragment Size Register
Upper Transmit Descriptor
Address Register
Upper Receive Resource Address
Register
Upper Receive Descriptor Address
Register
Buffer Pointer Field in the RRA
Buffer Word Count Fields in the
RRA
Receive Status Field in the RDA
Packet Byte Count Field in the
RDA
Buffer Pointer Fields in the RDA
Receive Descriptor Link Field in
RDA
‘‘In Use’’ Field in RDA
Fragment Count Field in TDA
Packet Size Field in TDA
Packet Pointer Fields in TDA
Fragment Size Field in TDA
Transmit Descriptor Link Field in
TDA
TL F 10492 – 10
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