DS125DF1610 Datasheet, PDF (60/81 Pages) Texas Instruments – 9.8 to 12.5 Gbps 16-Channel Retimer

DS125DF1610
SNLS482A – APRIL 2014 – REVISED DECEMBER 2015
www.ti.com
Address
(Hex)
Bits
7D
7
6
5
4
3
2
1
0
7E
7
6
5
4
3
2
1
0
7F
7
6
5
4
3
2
1
0
80
7
6
5
4
3
2
1
0
81
7:0
Default
Value
(Hex)
0
1
0
0
1
0
0
0
0
0
0
1
0
0
1
1
0
0
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
Table 17. Channel Registers, 5A to 9B (continued)
Mode
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
R
R
R
R
R
R
R
R
R
EEPROM Field Name
Description
Y
CONT_ADAPT_HEO_CHNG_THRS3 Limit for HEO change before
Y
CONT_ADAPT_HEO_CHNG_THRS2
triggering a DFE adaption
while continous DFE adaption
Y
CONT_ADAPT_HEO_CHNG_THRS1 is enabled.
Y
CONT_ADAPT_HEO_CHNG_THRS0
Y
CONT_ADAPT_VEO_CHNG_THRS3 Limit for VEO change before
Y
CONT_ADAPT_VEO_CHNG_THRS2
triggering a DFE adaption
while continous DFE adaption
Y
CONT_ADAPT_VEO_CHNG_THRS1 is enabled.
Y
CONT_ADAPT_VEO_CHNG_THRS0
Y
CONT_ADPT_TAP_INCR3
Y
CONT_ADPT_TAP_INCR2
Y
CONT_ADPT_TAP_INCR1
Limit of allowable DFE tap
weight change from the
previous base point
Y
CONT_ADPT_TAP_INCR0
Y
CONT_ADPT_FOM_CHNG_THRS3 This feature is reserved for
Y
CONT_ADPT_FOM_CHNG_THRS2 ^{future use.}
Y
CONT_ADPT_FOM_CHNG_THRS1
Y
CONT_ADPT_FOM_CHNG_THRS0
N
EN_OBS_ALT_FOM
1: Allows for alternate FoM
calculation to be shown in
channel registers 0x27, 0x28
and 0x29 instead of HEO and
VEO
N
RESERVED
Y
DIS_HV_CHK_FOR_CONT_ADAPT 1: Ignore HEO/VEO lock
condition checks during
continous adaption. Normal
operation for continous DFE
adaption
Y
EN_DFE_CONT_ADAPT
1: Continous DFE adaption is
enabled
0: DFE adapts only during
lock and then freezes
Y
CONT_ADPT_CMP_BOTH
1: If continous DFE adaption
is enabled, a DFE adaption
will trigger if either HEO or
VEO degrades
Y
CONT_ADPT_COUNT2
Y
CONT_ADPT_COUNT1
Y
CONT_ADPT_COUNT0
Limit for number of weights
the DFE can look ahead in
continous adaption
N
HEO_CENTER7
N
HEO_CENTER6
This feature is reserved for
future use.
N
HEO_CENTER5
N
HEO_CENTER4
N
HEO_CENTER3
N
HEO_CENTER2
N
HEO_CENTER1
N
HEO_CENTER0
N
RESERVED
60
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