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What is Rx_mac_pa signal used for?
by ccyjoshua on Aug 29, 2011 |
ccyjoshua
Posts: 3 Joined: Jul 25, 2011 Last seen: Nov 21, 2011 |
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Hi everyone,
I am new to the MAC core. A very simple question - What is Rx_mac_pa signal used for? From the waveform I see that it keeps asserted whenever there is data. Is that true? Thank you! |
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RE: What is Rx_mac_pa signal used for?
by olof on Aug 29, 2011 |
olof
Posts: 218 Joined: Feb 10, 2010 Last seen: Dec 17, 2018 |
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Which MAC core are you referring to? I couldn't find any signal call rx_mac_pa in the ethmac project at least
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RE: What is Rx_mac_pa signal used for?
by ccyjoshua on Aug 29, 2011 |
ccyjoshua
Posts: 3 Joined: Jul 25, 2011 Last seen: Nov 21, 2011 |
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Which MAC core are you referring to? I couldn't find any signal call rx_mac_pa in the ethmac project at least
I am referring to the "10_100_1000 Mbps Tri-mode Ethernet MAC" by Jon Gao. Rx_mac_pa on the side of user interface. |
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RE: What is Rx_mac_pa signal used for?
by maverickist on Sep 9, 2011 |
maverickist
Posts: 2 Joined: Apr 9, 2004 Last seen: May 16, 2024 |
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pa means "packets avaliable".
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RE: What is Rx_mac_pa signal used for?
by initra on Oct 14, 2011 |
initra
Posts: 1 Joined: Sep 4, 2008 Last seen: Feb 7, 2022 |
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And what about "rx_mac_ra" signal?
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RE: What is Rx_mac_pa signal used for?
by ccyjoshua on Nov 16, 2011 |
ccyjoshua
Posts: 3 Joined: Jul 25, 2011 Last seen: Nov 21, 2011 |
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And what about "rx_mac_ra" signal?
This signal is defined in the spec: "When Fifo received one full packet or stored packet data meet hight water mark,the Rx_mac_ra will be asserted.The Rx_mac_ra will be disasserted while Fifo below low water mark. If there is one full packet received from PHY, The Rx_mac_ra will disasserted when the whole packet is read out from Fifo." |
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