AFD4400 datasheet(80/101 Pages) NXP

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AFD4400 Digital Front End Processor Data Sheet, Rev. 0

Electrical characteristics

Freescale Semiconductor

This table provide the CPRI LV-II receiver AC timing specifications. The AC specifications do not include Refclk jitter.

The intended application is as a point-to-point interface of approximately 100 cm and up to two connectors. The maximum

allowed total loss (channel + interconnect + other loss) is 20.4 dB at 6.144 Gb/s.

This table provides the LV-III receiver parameters guided by 10 GBase-KR electrical interface (IEEE 802.3 [22], clause 72.7.2).

3.6.11.5

SGMII interface

This section provides AC electrical characteristics of SGMII interface.

This table provides the SGMII transmitter AC specifications. The AC specifications do not include Refclk jitter.

Table 53. CPRI receiver AC timing specifications (LV-II: 1.2288, 2.4576, 3.072, 4.9152, and 6.144 Gbps)

Parameter

Symbols

Min

Nom

Max

Unit

Notes

Gaussian jitter

R_GJ

—

0.2

UI p–p —

Uncorrelated bounded high probability jitter R_UBHPJ —

—

0.12

UI p–p —

Correlated bounded high probability jitter

R_CBHPJ —

—

0.63

UI p–p —

Bounded high probability jitter

R_BHPJ

—

0.75

UI p–p —

Sinusoidal jitter, maximum

R_SJ-max —

—

5.000

UI p–p —

Sinusoidal jitter, high frequency

R_SJ-hf

—

0.050

UI p–p —

Total jitter does not include sinusoidal jitter

R_Tj

—

0.950

UI p–p —

Unit Interval: 1.2288 Gbaud

1/1228.8-100ppm 1/1228.8 1/1228.8+100ppm

μs—

Unit interval: 2.4576 Gbaud

1/2457.6-100ppm 1/2457.6 1/2457.6+100ppm

μs—

Unit interval: 3.072 Gbaud

1/3072.0-100ppm 1/3072.0 1/3072.0+100ppm

μs—

Unit interval: 4.9152 Gbaud

1/4915.2-100ppm 1/4915.2 1/4915.2+100ppm

μs—

Unit interval: 6.144 Gbaud

1/6144.0-100ppm 1/6144.0 1/6144.0+100ppm

μs—

Table 54. CPRI receiver AC timing specifications (LV-III: 9.8304 Gbps)

Parameter

Symbols

Min

Nom

Max

Unit

Notes

Random jitter

R_GJ

—

0.130

UI p–p

—

Sinusoidal jitter, maximum

R_SJ-max —

—

0.115

UI p–p

—

DCD

R_dcd

—

0.035

UI p–p

—

Total jitter

R_Tj

—

See Note 1

UI p–p

Unit Interval: 9.8304 Gbaud

1/9830.4-100pm

1/9830.4 1/9830.4+100ppm

μs—

Note:

1. The R_Tj is per Interference Tolerance Test IEEE Std 802.3ap-2007 specified in Annex 69A.

2. The AC specifications do not include Refclk jitter.

3. The maximum channel insertion loss is achieved by manual tuning TX equalization.

Table 55. SGMII transmitter AC specifications

Parameter

Symbols

Min

Nom

Max

Condition

Unit

Note

Unit interval

800-100 ppm

800

800+100 ppm ±100 ppm

—

Deterministic jitter

—

0.17

—

UI p–p

—

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