Hello,
We have used TLK10232 dual phy device for a XAUI to SFP/SFP+ application and we have a problem in 1G link establishment when auto-negotiation is enabled.
The initialization of the device is shown below:
- Reset device (assert RESET_N pin)
- Select the reference clock selection (312.5 MHz)
- Disable auto-negotiation
- Disable link training
- Write 16’h03FF to 0x1E.8020
- Write HS_ENTRACK (0x1E.0004 bit 15) to 1’b1 and HS_EQPRE (0x1E.0004 bits 14:12) to 3’b101
- Issue a data path reset by writing 1’b1 to 0x1E.000E bit 3
- Enable auto-negotiation 0x07.0000 bit 12 ->1'b1
- Issue AN_RESTART (0x07.0000 bit 9 ->1'b1
- Read AN_CONTROL register to clear AN_RESTART bit
The peer device is a VIAVI MTS5800 Tester configured at speed=1G, auto-negotiation=on.
The inventory info of the SFPs used at both the tester & the PHY (TLK10232) side are:
Inventory:
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
Connector : 0x07 (LC)
Transceiver codes : 0x20 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
10G Ethernet Compliance Codes: 10G Base-LR
Ethernet Compliance Codes: -
Fibre Channel Link Length: -
Fibre Channel Technology: -
SFP+ Cable Technology: -
Fibre Channel Transmission Media: -
Fibre Channel Speed: -
Encoding : 0x06
BR, Nominal : 10300 MBd
Rate identifier : 0x00 (unspecified)
Length (SMF,km) : 10km
Length (SMF) : 10000m
Length (50um) : 0m
Length (62.5um) : 0m
Length (Copper) : 0m
Length (OM3) : 0m
Laser wavelength : 1310nm
Vendor name : FIBRAIN
Vendor OUI : 00:1b:c5
Vendor PN : FTFS1XGS31L010DI
Vendor rev : 1.0
Option values : 0x1a
Option : RX_LOS implemented
Option : TX_FAULT implemented
Option : TX_DISABLE implemented
BR margin, max : 0%
BR margin, min : 0%
Vendor SN : CIC20210034
Date code : 2020-05-14
Checking the AN_STATUS register (0x07.0001) the value is 0x88 (AN_COMLETE=0, LINK_STATUS=0)
The tester also indicates link down.
When I tried to do an AN_RESET (reg. 0x070000 bit 15->1'b1) then the link to the PHY side came up but the link at the tester side was still down.
Checking the AN_STATUS register (0x070001) the value is 0xac (AN_COMPLETE=1, LINK_STATUS=1), AN_BP_STATUS (0x070030) value is 0x3 (AN_1G_KX=1).
Can you provide us some info how to proceed?
Thanks in advance,
Panayotis
