AR# 50468: 7 Series GTX Minimum Pulse Width on DLYSRESETDONE and PHALIGNDONE for Buffer Bypass Auto Mode
AR# 50468
7 Series GTX Minimum Pulse Width on DLYSRESETDONE and PHALIGNDONE for Buffer Bypass Auto Mode
描述
A minimum pulse width of 100 ns is guaranteedfor both of these pulses to assure they can be captured for monitoring purposes.
解决方案
In TX/RX Buffer Bypass auto-mode (single lane), youonly need to assert DLYSRESET and wait forthe secondPHALIGNDONE rising edge. The length of these pulses must be known if a sampling scheme is used tomonitorthem.That length is 100 ns.The PHALIGNDONE is also guaranteed to be deasserted for 100 ns before the second rising edge.