SFP_LOOPBACK- SFP Loopback Module

Fields

Name	Type	Description
SOFT_RESET	write action	GTX Soft Reset
SFP_LOS	read	SFP Loss Of Signal (from SFP module)
LINK_UP	read	GTX link status
ERROR_COUNT	read	GTX error count
SFP_CLK	read	SFP clock freq
SFP_MAC_LO	read	MAC low in integer value bit 23:0
SFP_MAC_HI	read	MAC high in integer value bit 47:24