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DP83822I: DP83822I work in 100M-FX mode, How to handle the link status failure

Part Number: DP83822I

Previously, I  have configured DP83822 in 100M-TX mode, and DP83822 function OK in that mode。

but now, I am using DP83822 in 100M FX mode,there is something wrong with the link status.

(1)My Bootstrap Setting Are as follow, 

COL= Mode2

RXD0=Mode1
RXD1=Mode1
RXD2=Mode4
RXD3=Mode1


LED_0=Mode4
CRS=   Mode2
RX_ER=Mode4
RX_DV=Mode4

(2) the register value read by MDIO are as follows: 

regaddr=0,value=0x3100
regaddr=1,value=0x7849
regaddr=2,value=0x2000
regaddr=3,value=0xa240
regaddr=4,value=0x181
regaddr=5,value=0x0
regaddr=6,value=0x4
regaddr=7,value=0x2001
regaddr=8,value=0x0
regaddr=9,value=0x0
regaddr=10,value=0x4100
regaddr=11,value=0x1000
regaddr=12,value=0x0
regaddr=13,value=0x0
regaddr=14,value=0x0
regaddr=15,value=0x0
regaddr=16,value=0x204
regaddr=17,value=0x108
regaddr=18,value=0x0
regaddr=19,value=0x0
regaddr=20,value=0x0
regaddr=21,value=0x0
regaddr=22,value=0x100
regaddr=23,value=0xe1
regaddr=24,value=0x400
regaddr=25,value=0x8004
regaddr=26,value=0x0
regaddr=27,value=0x7d
regaddr=28,value=0x5ee
regaddr=29,value=0x0
regaddr=30,value=0x2
regaddr=31,value=0x0

but the register BMCR(0x1):0x7849  indicates that the link is not established. is there any advice to eatablish the link. maybe there is something wrong with the Bootstrap Setting, 

and I have measured the 100 Base-FX waveform: (the waveform is worse than figure 17 in datasheet)