dm9302 Davicom Semiconductor, Inc., dm9302 Datasheet - Page 26
dm9302
Manufacturer Part Number
dm9302
Description
10/100mbps Ethernet Fiber/twisted Pair Media Converter With Local Bus
Manufacturer
Davicom Semiconductor, Inc.
Datasheet
1.DM9302.pdf
(64 pages)
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6.33 Per Port Bandwidth Control Setting Register (67H)
26
7:4
3:0
Bit
BW CTRL
Name
BSTH
PE0,RW
PE0,RW
Default
10/100Mbps Ethernet Fiber/Twisted Pair Media Converter with Local bus
Broadcast Storm Threshold
These bits define the bandwidth threshold that received broadcast packets over
the threshold are discarded.
Threshold table below
0000: no broadcast storm control
0001: 8K packets/sec
0010: 16K packets/sec
0011: 64K packets/sec
0100: 5%
0101: 10%
0110: 20%
0111: 30%
1000: 40%
1001: 50%
1010: 60%
1011: 70%
1100: 80%
1101: 90%
111X: no broadcast storm control
Received packet length counted. Bandwidth table below
These bits define the bandwidth threshold that transmitted or received packets
over the threshold are discarded.
Bandwidth table below
0000: none
0001: 64Kbps
0010: 128Kbps
0011: 256Kbps
0100: 512Kbps
0101: 1Mbps
0110: 2Mbps
0111: 4Mbps
1000: 8Mbps
1001: 16Mbps
1010: 32Mbps
1011: 48Mbps
1100: 64Mbps
1101: 72Mbps
1110: 80Mbps
1111: 88Mbps
Description
DM9302
Preliminary datasheet
DM9302-15-DS-P01
July 30, 2009
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