CS61884 datasheet(57/72 Pages) CIRRUS

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CS61884

DS485PP4

19.6 Jitter Attenuator Characteristics

(TA = -40

°Cto85°C; TV+, RV+ = 3.3 V ±5%; GND = 0 V)

Notes: 18. Attenuation measured with sinusoidal input filter equal to 3/4 of measured jitter tolerance. Circuit

attenuates jitter at 20 dB/decade above the corner frequency. Output jitter can increase significantly

when more than 28 UI’s are input to the attenuator.

19. Measurement is not effected by the position of the Jitter Attenuator.

Parameter

Min.

Typ

Max

Units

Jitter Attenuator Corner Frequency

T1/J1 Modes

Note 11, 19

T1/J1 Modes

E1 Modes

(Depends on JACF Bit in host mode)

E1 Modes

3.78

7.56

1.25

2.50

E1 Jitter Attenuation

3 Hz to 40 Hz

Note 11, 18

400 Hz to 100 kHz

+0.5

- 19.5

T1/J1 Jitter Attenuation

1 Hz to 20 Hz

1kHz

Note 11, 18

1.4KHz to 100KHz

- 33.3

-40

Attenuator Input Jitter Tolerance before FIFO

32-bit FIFO

over flow and under flow

Note 11

64-bit FIFO

Delay through Jitter Attenuator Only

32-bit FIFO

Note 11

64-bit FIFO

Intrinsic Jitter in Remote Loopback

Notes 11, 17

0.11

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