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Cations (refer to, Figure 20 on, Figure 19 – Cirrus Logic CS61884 User Manual

Page 58

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CS61884

58

DS485F3

1

10

100

1K

10K

0

Attenuation in dB

Frequency in Hz

+ 0.5

2

57

1.4K

20

400

40

+ 10

- 10

- 20

- 30

- 50

- 40

- 60

- 19.5

- 6

- 70

100K

AT&T 62411

Minimum Attenuation

ITU G.736

TYP. T1 @ 3.78Hz CF

TYP. E1 @ 1.25 Hz CF

TYP. E1 @ 2.5 Hz CF

TYP. T1 @ 7.56Hz CF

AT&T 62411

Maximum Attenuation

Figure 19. Jitter Transfer Characteristic vs. G.736, TBR 12/13 & AT&T 62411

PEAK TO PEAK JITTER (UI)

FREQUENCY IN Hz

1

10

1k

100

100k

1.8

4.9

20

300

10k

2.4k

18k

1

.1

10

100

.2

.4

1.5

1000

18

28

138

300

AT&T 62411

ITU G.823

TYP. E1 Performance

TYP. T1 Performance

Figure 20. Jitter Tolerance Characteristic vs. G.823 & AT&T 62411