This page documents an integrated DAQ link receiver built into the AMC13. For firmware version v=0x10 this works fine using the old "Wu" format DAQ link protocol. Later versions omit the receiver as the protocol has changed and the CMS DAQ group haven't yet developed a Xilinx-compatible receiver.

For now, if version 0x10 is programmed into the AMC13, one can take data with a loop-back fiber plugged between the top two SFP sites and check it's integrity with the counters below.

Addr Name Descr Count when working? Count when not working?
0x90 DAQLDC_WRD_CTR Words Sent Y N
0x91 DAQLDC_CTRL_CTR ?? Sent N Y
0x91 DAQLDC_EV_CTR Events Sent Y N
0x93 DAQLDC_RCVE_WRD_CTR Words Received Y N
0x94 DAQLDC_RCVE_CTRL_CTR ?? Received Y N
0x95 DAQLDC_RCVE_EV_CTR Events Received N Y
0x98 DAQLDC_SYNC_LOST_CTR Sync Losses ?? N Y
0x99 DAQLDC_ACK_CTR Number of acknowledged packets N Y
0x9a DAQLDC_VAL_PCKT_CTR Number of Valid Packets N Y
0x9b DAQLDC_ALL_PCKT_CTR Total number of Packets Y Y
0x9c DAQLDC_BAD_PCKT_CTR Number of Bad Packets N Y
0x9d DAQLDC_BACKPR_CTR Packets dropped due to SDRAM full N Y
0x9e DAQLDC_CTRL_ERR_CTR Control Errors N Y

-- EricHazen - 31 Aug 2012

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Topic revision: r2 - 09 Nov 2012 - CharlieHill
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