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UM0851 bảng dữ liệu(PDF) 53 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  SPEAr is a family of highly customizable ARM-based embedded
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UM0851
Communication device drivers
Doc ID 16604 Rev 2
53/245
Note:
For the tests conducted above the number of DMA descriptors used for Rx are 64, and for
Tx are 128. The speeds shown above are in Mbps.
Figure 9.
Ethernet performance evaluation results (Checksum offloading disabled)
Figure 10.
Ethernet performance evaluation results (Checksum offloading enabled)
Reception baud
Throughput for the test case 30 seconds (./netperf -l 30 -H 192.168.1.10 ) at
Linux PC (Reception baud)
Transmission
baud
Throughput for the test case run for 30 seconds
(./netperf -l 30 -H 192.168.1.1) at SPEAr (Transmission baud)
Table 15.
SPEAr600 Ethernet evaluation results
0
500
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0
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Performance in Mbps
RX (ChkSumOff
Disabled/CRC Strip
Disabled)
TX (ChkSumOff
Disabled/CRC Strip
Disabled)
RX (ChkSumOff
Disabled/CRC Strip
Enabled)
TX (ChkSumOff
Disabled/CRC Strip
Enabled)
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Performance in Mbps
RX (ChkSumOff
Enabled/CRC Strip
Disabled)
TX (ChkSumOff
Enabled/CRC Strip
Disabled)
RX (ChkSumOff
Enabled/CRC Strip
Enabled)
TX (ChkSumOff
Enabled/CRC Strip
Enabled)



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