DS125DF1610 Datasheet, PDF (45/81 Pages) Texas Instruments – 9.8 to 12.5 Gbps 16-Channel Retimer

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Address
(Hex)
Bits
38
7
6
5
4
3
2
1
0
39
7
6
5
4
3
2
1
0
DS125DF1610
SNLS482A – APRIL 2014 – REVISED DECEMBER 2015
Table 15. Channel Registers, 20 to 39 (continued)
Default
Value
(Hex)
0
0
0
0
0
0
0
0
0
0
0
Mode
R
R
R
R
R
R
R
R
RW
RW
RW
EEPROM
Field Name
N
DFE_STATUS7
N
DFE_STATUS6
N
DFE_STATUS5
N
DFE_STATUS4
N
DFE_STATUS3
N
DFE_STATUS2
N
DFE_STATUS1
N
DFE_STATUS0
N
PRELOCK_COMPARATOR_
ABRT_MODE
Y
EOM_RATE1
Y
EOM_RATE0
0
RW
Y
START_INDEX4
0
RW
Y
START_INDEX3
0
RW
Y
START_INDEX2
0
RW
Y
START_INDEX1
0
RW
Y
START_INDEX0
Description
Feature is reserved for future
use.
Feature is reserved for future
use.
With eom_ov=1, these bits
control the Eye Monitor Rate.
11: Use for Full Rate,
Fastest
10 : Use for 1/2 Rate
01: Use for 1/4 Rate
00: Use for 1/8 Rate,
Slowest
Start index for EQ adaptation
Address
(Hex)
Bits
3A
7
6
5
4
3
2
1
0
3B
7
6
5
4
3
2
1
0
Default
Value
(Hex)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 16. Channel Registers, 3A to 59
Mode
RW
RW
RW
RW
RW
RW
RW
RW
R
R
R
R
R
R
R
R
EEPROM Field Name
Y
FIXED_EQ_BST0[1]
Y
FIXED_EQ_BST0[0]
Y
FIXED_EQ_BST1[1]
Y
FIXED_EQ_BST1[0]
Y
FIXED_EQ_BST2[1]
Y
FIXED_EQ_BST2[0]
Y
FIXED_EQ_BST3[1]
Y
FIXED_EQ_BST3[0]
N
PPM_COUNT15
N
PPM_COUNT14
N
PPM_COUNT13
N
PPM_COUNT12
N
PPM_COUNT11
N
PPM_COUNT10
N
PPM_COUNT9
N
PPM_COUNT8
Description
During adaptation, if the
divider setting is >2, then a
fixed EQ setting from this
register will be used.
However, if channel register
0x6F[7] is enabled, then an
EQ adaptation will be
performed instead.
PPM count MSB
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