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Packet filtration

Yu Zhang10589
Expert 1100 points
Other Parts Discussed in Thread: CC2500

Hi all:

One of the config. register is ADDR register, it specifies the packet filtration address.

My question is "what is packet filtration"?

 

Thank you

  • 0
    TI__Guru 64560 points

    Yu Zhang said:

    One of the config. register is ADDR register, it specifies the packet filtration address.

    My question is "what is packet filtration"?

    Section 15 of the CC2500 datasheet (assuming you are still referencing that device) discusses the Packet Handling Hardware Support.  Packet filtering can be accomplished by methods, either address filtering, maximum length filtering or CRC filtering.  Section 15.3 discusses these filtering modes is more detail.

    Essentially, the CC2500 packet handling hardware can be set up to reject packets received from the radio so that they are not sent to the RX FIFO for processing by an external host.  This allows the CC2500 Packet Handling hardware to offload the external host processor from needing to inspect all packets received and determine if that packet is intended for the device function.