DS125RT410_15 Datasheet, PDF (39/58 Pages) Texas Instruments – Low-Power Multi-Rate Quad Channel Retimer

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DS125RT410
SNLS459A – APRIL 2013 – REVISED OCTOBER 2015
Table 15. Channel Registers (continued)
ADDRESS
(HEX)
20
21
22
23
BITS
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7:0
7
DEFAULT
VALUE
(Hex)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MODE
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
EEPROM
FIELD NAME
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
N
RESERVED
N
EOM_GET_HEO_VEO_OV
6
1
RW
Y
RESERVED
5:0
0
RW
N
RESERVED
24
7
0
RW
N
FAST_EOM
6
5
4
3
2
1
0
25
7
6
5
4
3
2
1
0
26
7
6
5
4
3
2
1
0
0
RW
N
RESERVED
0
RW
N
GET_HEO_VEO_ERROR_
NO_HITS
0
RW
N
GET_HEO_VEO_ERROR_
NO_OPENING
0
RW
N
RESERVED
0
RW
N
RESERVED
0
RW
N
EOM_GET_HEO_VEO
0
RW
N
EOM_START
0
R
N
EOM_COUNT15
0
R
N
EOM_COUNT14
0
R
N
EOM_COUNT13
0
R
N
EOM_COUNT12
0
R
N
EOM_COUNT11
0
R
N
EOM_COUNT10
0
R
N
EOM_COUNT9
0
R
N
EOM_COUNT8
0
R
N
EOM_COUNT7
0
R
N
EOM_COUNT6
0
R
N
EOM_COUNT5
0
R
N
EOM_COUNT4
0
R
N
EOM_COUNT3
0
R
N
EOM_COUNT2
0
R
N
EOM_COUNT1
0
R
N
EOM_COUNT0
DESCRIPTION
1: Override enable for manual control of the HEO/VEO trigger
0: Normal operation
1: Enables fast EOM mode for fully eye capture. In this mode the
phase DAC and voltage DAC of the EOM are automatically
incremented through a 64 x 64 matrix. Values for each point are
stored in channel registers 25 and 26.
GET_HEO_VEO sees no hits at zero crossing
GET_HEO_VEO cannot see a vertical eye opening
1: Manually triggers a HEO/VEO measurement. Must be enabled
with channel register 0x23[7].
1: Starts EOM counter, self clearing
MSBs of EOM counter
LSBs of EOM counter
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