TLK10031 Datasheet, PDF (35/146 Pages) Texas Instruments – TLK10031 Single-Channel XAUI/10GBASE-KR Transceiver

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TLK10031
SLLSEL3A – JULY 2015 – REVISED AUGUST 2015
7.4.10 Line Rate, SERDES PLL Settings, and Reference Clock Selection for the General
Purpose SERDES Mode
When the TLK10031 is set to operate in the General Purpose SERDES mode, the following tables show a
summary of line rates and reference clock frequencies used for CPRI/OBSAI for 1:1, 2:1 and 4:1 operation
modes.
Table 7-4. Specific Line Rate Selection for the 1:1 General Purpose Operation Mode
Line Rate
(Mbps)
4915.2
3840
3125
3125
3072
2457.6
1920
1536
1228.8
LOW SPEED SIDE
SERDES PLL
Multiplier
Rate
20
Full
12.5
Full
10
Full
5
Full
10
Full
8/10
Full
12.5
Half
10
Half
8/10
Half
REFCLKP/N
(MHz)
122.88
153.6
156.25
312.5
153.6
153.6/122.88
153.6
153.6
153.6/122.88
Line Rate
(Mbps)
4915.2
3840
3125
3125
3072
2457.6
1920
1536
1228.8
HIGH SPEED SIDE
SERDES
PLL
Multiplier
Rate
20
Half
12.5
Half
10
Half
5
Half
10
Half
16/20
Quarter
12.5
Quarter
10
Quarter
16/20
Eighth
REFCLKP/N
(MHz)
122.88
153.6
156.25
312.5
153.6
153.6/122.88
153.6
153.6
153.6/122.88
Table 7-5. Specific Line Rate and Reference Clock Selection for the 2:1 General Purpose Operation Mode
Line Rate
(Mbps)
4915.2
3840
3072
2457.6
1920
1536
1228.8
768
614.4
LOW SPEED SIDE
SERDES PLL
Multiplier
Rate
20
Full
12.5
Full
10
Full
8/10
Full
12.5
Half
10
Half
8/10
Half
10
Quarter
8/10
Quarter
REFCLKP/N
(MHz)
122.88
153.6
153.6
153.6/122.88
153.6
153.6
153.6/122.88
153.6
153.6/122.88
Line Rate
(Mbps)
9830.4
7680
6144
4915.2
3840
3072
2457.6
1536
1228.8
HIGH SPEED SIDE
SERDES
PLL
Multiplier
Rate
20
Full
12.5
Full
10
Full
16/20
Half
12.5
Half
10
Half
16/20
Quarter
10
Quarter
16/20
Eighth
REFCLKP/N
(MHz)
122.88
153.6
153.6
153.6/122.88
153.6
153.6
153.6/122.88
153.6
153.6/122.88
Table 7-6. Specific Line Rate and Reference Clock Selection for the 4:1 General Purpose Operation Mode
Line Rate
(Mbps)
2457.6
1536
1228.8
768
614.4
LOW SPEED SIDE
SERDES PLL
Multiplier
Rate
8/10
Full
10
Half
8/10
Half
10
Quarter
8/10
Quarter
REFCLKP/N
(MHz)
153.6/122.88
153.6
153.6/122.88
153.6
153.6/122.88
Line Rate
(Mbps)
9830.4
6144
4915.2
3072
2457.6
HIGH SPEED SIDE
SERDES
PLL
Multiplier
Rate
16/20
Full
10
Full
16/20
Half
10
Half
16/20
Quarter
REFCLKP/N
(MHz)
153.6/122.88
153.6
153.6/122.88
153.6
153.6/122.88
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