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Chapter 6: Ethernet AVB Endpoint Transmission
hiLimit
The general equation is:
hiLimitValue = 2000 x idleSlopeValue
In this general equation, the value of 2000 is obtained from the maximum number of bytes which may be present in legacy frames (an Envelope frame as defined in IEEE802.3 can be of size 2000 bytes).
In this example, dedicating up to 75% of the total bandwidth to the AV traffic, we obtain:
hiLimitValue = 2000 x 6144 = 12288000
loLimit
The general equation is:
loLimitValue = 1518 x sendSlopeValue
In this general equation, the value of 1518 is obtained from the maximum number of bytes which may be present in AV frames.
In this example, dedicating up to 75% of the total bandwidth to the AV traffic, we obtain:
loLimitValue = 1518 x 2048 = 3108864
64 | www.xilinx.com | Ethernet AVB Endpoint User Guide |
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| UG492 July 23, 2010 |