TLK10031 Datasheet, PDF (66/146 Pages) Texas Instruments – TLK10031 Single-Channel XAUI/10GBASE-KR Transceiver

TLK10031
SLLSEL3A – JULY 2015 – REVISED AUGUST 2015
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Value
0000
0001
0010
0011
0100
0101
0110
0111
Table 7-28. LSRX Output De-emphasis
LS_DE[3:0]
Amplitude reduction
(%)
dB
0
0
4.76
–0.42
9.52
–0.87
14.28
–1.34
19.04
–1.83
23.8
–2.36
28.56
–2.92
33.32
–3.52
Value
1000
1001
1010
1011
1100
1101
1110
1111
LS_DE[3:0]
Amplitude reduction
(%)
dB
38.08
–4.16
42.85
–4.86
47.61
–5.61
52.38
–6.44
57.14
–7.35
61.9
–8.38
66.66
–9.54
71.42
–10.87
7.5.2.9 LS_SERDES_CONTROL_3 (register: 0x0008) (default: 0x000D) (device address: 0x1E)
Figure 7-49. LS_SERDES_CONTROL_3 Register
15
14
13
12
11
10
9
8
LS_RX_
INVPAIR
(RXG)
LS_TX_
INVPAIR
(RXG)
RESERVED
LS_EQ[3:0]
(RXG)
R/W
R/W
R/W
R/W
7
6
5
4
3
2
1
0
RESERVED
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Bit Field
15 LS_RX_INVPAIR
(RXG)
14 LS_TX_INVPAIR
(RXG)
13:12
11:8
7:0
RESERVED
LS_EQ[3:0]
(RXG)
RESERVED
Table 7-29. LS_SERDES_CONTROL_3 Field Description
Type
R/W
R/W
R/W
R/W
Reset
Description
LS Serdes lane outputs polarity on the receive channel. (y = Lane 0 or 1 or 2 or 3)
0 = Normal polarity. OUTAyP considered positive data. OUTxyN considered negative data
(Default 1’b0)
1 = Inverted polarity. OUTAyP considered negative data. OUTxyN considered positive data
LS Serdes lane inputs polarity on the transmit channel. (y = Lane 0 or 1 or 2 or 3)
0 = Normal polarity. INAyP considered positive data and INAyN considered negative data (Default
1’b0)
1 = Inverted polarity. INAyP considered negative data and INAyP considered positive data
For TI use only (Default 2’b00)
LS Serdes Equalization control (Default 4’b0000). Table 7-30
R/W
For TI use only (Default 8'b00001101)
Value
0000
0001
0010
0011
0100
0101
0110
0111
66
Detailed Description
Table 7-30. LS_EQ Serdes Equalization
LS_EQ[3:0]
Low Freq Gain Zero Freq
Maximum
Adaptive
Reserved
Value
1000
1001
1010
1011
1100
1101
1110
1111
LS_EQ[3:0]
Low Freq Gain
Adaptive
Zero Freq
365 MHz
275 MHz
195 MHz
140 MHz
105 MHz
75 MHz
55 MHz
50 MHz
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