DS125RT410_15 Datasheet, PDF (41/58 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)
2D
2E
2F
30
31
BITS
7
6
5
4
3
2
1
0
7:00
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
DEFAULT
VALUE
(Hex)
1
0
0
0
0
MODE
RW
RW
RW
RW
RW
EEPROM
FIELD NAME
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
RESERVED
Y
EQ_BST_OV
0
RW
Y
DRV_SEL_VOD2
0
RW
Y
DRV_SEL_VOD1
0
RW
Y
DRV_SEL_VOD0
0
RW
N
RESERVED
0
RW
Y
RATE1
0
RW
Y
RATE0
0
RW
Y
SUBRATE1
0
RW
Y
SUBRATE0
0
RW
Y
INDEX_OV
1
RW
Y
EN_PPM_CHECK
1
RW
Y
EN_FLD_CHECK
0
RWSC
N
CTLE_ADAPT
0
RW
N
RESERVED
0
RW
N
RESERVED
0
R
N
EOM_VRANGE_LIMIT_ERR
OR
0
R
N
HEO_VEO_INTERRUPT
0
RW
Y
PRBS_EN_DIG_CLK
0
RW
N
RESERVED
0
RW
Y
PRBS_PATTERN_SEL1
0
RW
Y
PRBS_PATTERN_SEL0
0
RW
Y
RESERVED
0
RW
Y
ADAPT_MODE1
1
RW
Y
ADAPT_MODE0
0
RW
Y
EQ_SM_FOM1
0
RW
Y
EQ_SM_FOM0
0
RW
N
RESERVED
0
RW
N
RESERVED
0
RW
N
RESERVED
DESCRIPTION
Allow override control of the EQ setting by writing to channel register
0x03. Not recommended for normal operation.
Controls the VOD levels of the high speed drivers
4 bits determine standard. Refer to Table 2.
If this bit is set to 1, reg 0x13 is to be used as a 5 bit index to the
[31:0] array of EQ settings.
1: PPM check to be used as a qualifier when performing lock detect
For default ref_mode 3:
0: FLD is enabled
1: FLD is disabled
Starts CTLE adaption, self-clearing
Requires that channel register 0x36[6] be set.
1: Indicates that HEO/VEO dropped below the limits set in channel
register 0x76 This bit is cleared after reading. This bit will stay set
until it has been cleared by reading.
This bit enables the clock to operate the PRBS generator and/or the
PRBS checker. Toggling this bit is the primary method to reset the
PRBS pattern generator and PRBS checker.
Selects the PRBS generator pattern to output. Requires that the
pattern generator be configured properly.
00: PRBS-7
01: PRBS-9
10: PRBS-15
11: PRBS-31
00: no adaption
01: adapt CTLE only
10: Reserved
11: Reserved
00: not valid
01: SM uses HEO only
10: SM uses VEO only
11: SM uses both HEO and VEO
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