Changes between Version 4 and Version 5 of 802.11/Usage/UserIO


Ignore:
Timestamp:
Apr 22, 2016, 5:36:29 PM (6 years ago)
Author:
murphpo
Comment:

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  • 802.11/Usage/UserIO

    v4 v5  
    4242Refer to the [wiki:HardwareUsersGuides/WARPv3/DebugHeader WARP v3 user guide] for the numbering of pins on the header.
    4343
     44'''Pin Map for design v1.5:'''
     45||=  Pin  =||=  In/Out  =||=  Signal Description  =||
     46||  0  ||  Out  || '''Tx PHY Active''': asserts when the Tx PHY begins transmitting a frame and de-asserts after the last sample is transmitted ||
     47||  1  ||  Out  || '''OFDM Rx PHY Active''': asserts when the first FFT is started and de-asserts when the Rx PHY completes processing ||
     48||  2  ||  Out  || '''DSSS Rx PHY Active''': asserts when the DSSS receiver is processing a frame ||
     49||  3  ||  Out  || '''OFDM Packet Detect''': asserts when the OFDM Rx PHY attempts a reception. A packet detection event does not always result in an Rx PHY active event ||
     50||  4  ||  Out  || '''DSSS Packet Detect''': asserts when the DSSS Rx PHY attempts a reception. A packet detection event does not always result in an Rx PHY active event ||
     51||  5  ||  Out  || '''LTS Timeout''': asserts briefly when the Rx PHY fails to correlate the preamble LTS following a packet detection event ||
     52||  6  ||  Out  || '''FCS Good''': asserts briefly after the PHY writes the last byte of a received frame to the packet buffer and the checksum calculation indicates no errors ||
     53||  7  ||  Out  || '''RSSI Det''': asserts when the instantaneous RSSI exceeds a programmed threshold (debug only - does not indicate actual PHY state) ||
     54||  8  ||  Out  || '''Tx Pending''': asserted by the MAC hardware when a new Tx MPDU is provided by the MAC but has not yet been submitted to the Tx PHY ||
     55||  9  ||  Out  || '''Idle for DIFS''': asserted whenever the MAC observes the medium has been idle longer than  DIFS interval ||
     56||  10  ||  Out  || '''Backoff Active''': asserted whenever the MAC is deferring to a busy medium; the MAC will not transmit when backing off ||
     57||  11  ||  Out  || '''NAV Active''': asserted whenever the MAC is enforcing backoff due to virtual carrier sense after reception of a frame with a valid duration field ||
     58||  12:15  ||  Out  || '''Sw Debug''': General debug outputs controlled by software via a register in the Rx PHY; useful for unobtrusively measuring software execution times ||
     59
     60
    4461'''Pin Map for design v1.0 - v1.4:'''
    4562||=  Pin  =||=  In/Out  =||=  Signal Description  =||