DP83815DUJB/NOPB National Semiconductor, DP83815DUJB/NOPB Datasheet - Page 87
![IC MEDIA ACCESS CONTROL 160-LBGA](/photos/6/82/68270/ujb160a_sml.jpg)
DP83815DUJB/NOPB
Manufacturer Part Number
DP83815DUJB/NOPB
Description
IC MEDIA ACCESS CONTROL 160-LBGA
Manufacturer
National Semiconductor
Datasheet
1.DP83815DVNGNOPB.pdf
(108 pages)
Specifications of DP83815DUJB/NOPB
Controller Type
Ethernet Controller, MAC/BIU
Interface
PCI
Voltage - Supply
3.3V
Current - Supply
170mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
160-LBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*DP83815DUJB
*DP83815DUJB/NOPB
DP83815DUJB
*DP83815DUJB/NOPB
DP83815DUJB
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DP83815DUJB/NOPB
Manufacturer:
Texas Instruments
Quantity:
10 000
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5.0 Buffer Management
rxDescRead
rxFIFOblock
rxDescWrite
rxFragWrite
rxDescRefr
rxAdvance
State
rxIdle
CR:RXE && !CRDD
XferDone && !OWN
CR:RXE && CRDD
XferDone && OWN
(descCnt == 0) &&
(rxPktBytes > 0)
rxPktBytes == 0
link == NULL
link!= NULL
FifoReady
XferDone
XferDone
XferDone
Event
(Continued)
Table 5-6 Receive State Tables
rxDescRead
rxFIFOblock
rxDescWrite
rxDescWrite
rxFIFOblock
rxDescRead
rxFragWrite
Next State
rxDescRefr
rxAdvance
rxAdvance
rxIdle
rxIdle
87
Start a burst transfer at address RXDP and a length
derived from RXCFG.
Start a burst transfer to refresh the link field of the current
descriptor.
Set ISR:RXIDLE.
Start a burst transfer from the RxDataFIFO to host
memory at fragPtr. The length will be the minimum of
rxPktBytes and descCnt. Decrement descCnt
accordingly.
Start a burst transfer to write the status back to the
descriptor, setting the OWN bit, and setting the MORE
bit. We'll continue the packet in the next descriptor.
Start a transfer to write the cmdsts back to the descriptor,
setting the OWN bit and clearing the MORE bit, and
filling in the final receive status (CRC, FAE, SIZE, etc.).
RXDP <- rxDescCache.link. Clear CRDD. Start a burst
transfer at address RXDP with a length derived from
RXCFG:MXDMA.
Set CRDD. Set ISR:RXIDLE.
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