AMC13SecretLDCRegisters < BUCMSPublic

OBSOLETE

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
0x96	DAQLDC_FIFO_ERR_CTR	FIFO Errors	N	Y
0x97	DAQLDC_CRC_ERR_CTR	CRC Errors	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

Topic revision: r3 - 21 Oct 2014 - EricHazen