DS125RT410_15 Datasheet, PDF (40/58 Pages) Texas Instruments – Low-Power Multi-Rate Quad Channel Retimer

DS125RT410
SNLS459A – APRIL 2013 – REVISED OCTOBER 2015
www.ti.com
Table 15. Channel Registers (continued)
ADDRESS
(HEX)
27
28
29
BITS
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
DEFAULT
VALUE
(Hex)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MODE
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
RW
R
R
EEPROM
FIELD NAME
N
HEO7
N
HEO6
N
HEO5
N N HEO4
HEO3
N
HEO2
N
HEO1
N
HEO0
N
VEO7
N
VEO6
N
VEO5
N
VEO4
N
VEO3
N
VEO2
N
VEO1
N
VEO0
N
RESERVED
N
EOM_VRANGE_SETTING1
N
EOM_VRANGE_SETTING0
4:0
0
RW
N
RESERVED
2A
7
0
RW
Y
EOM_TIMER_THR7
6
0
RW
Y
EOM_TIMER_THR6
5
1
RW
Y
EOM_TIMER_THR5
4
1
RW
Y
EOM_TIMER_THR4
3
0
RW
Y
EOM_TIMER_THR3
2
0
RW
Y
EOM_TIMER_THR2
1
0
RW
Y
EOM_TIMER_THR1
0
0
RW
Y
EOM_TIMER_THR0
2B
7:6
0
RW
N
RESERVED
5:4
0
RW
Y
RESERVED
3
0
RW
Y
EOM_MIN_REQ_HITS3
2
0
RW
Y
EOM_MIN_REQ_HITS2
1
0
RW
Y
EOM_MIN_REQ_HITS1
0
0
RW
Y
EOM_MIN_REQ_HITS0
2C
7
0
RW
N
RESERVED
6
1
RW
Y
VEO_SCALE
5
1
RW
Y
RESERVED
4
1
RW
Y
RESERVED
3
0
RW
Y
RESERVED
2
0
RW
Y
RESERVED
1
1
RW
Y
RESERVED
0
0
RW
Y
RESERVED
DESCRIPTION
HEO value, requires CDR to be locked for valid measurement
VEO value, requires CDR to be locked for valid measurement
Use these bits to read back the EOM voltage range setting:
00: ±100 mV
01: ±200 mV
10: ±300 mV
11: ±400 mV
Controls the amount of time the EOM samples each point in the eye
for. The total counter bit width is 16-bits. This register is the upper 8-
bits. The counter counts in 32-bit words. Therefore, the total number
of bits is 32 times this value
These bits set the number of hits for a particular phase and voltage
location in the EOM before the EOM will indicate a hit has occurred.
This filtering only affects the HEO measurement. Filter threshold
ranges from 0 to 15 hits.
Scale VEO based on EOM vrange
40
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