ZL30105 datasheet(18/50 Pages) ZARLINK

Part #	ZL30105

Description	T1/E1/SDH Stratum 3 Redundant System Clock Synchonizer for AdvancedTCA and H.110

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Manufacturer	ZARLINK [Zarlink Semiconductor Inc]

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ZL30105

Data Sheet

18

Zarlink Semiconductor Inc.

3.0

Control and Modes of Operation

3.1

Application Selection

3.2

Loop Filter and Limiter Selection

The loop filter and limiter settings are selected through the APP_SEL and SEC_MSTR pins, see Table 2. The

maximum loop filter bandwidth is also dependent on the frequency of the currently selected reference (REF0/1/2).

APP_SEL

Application

Applicable Standard

Out Of Range Limits

00

DS1

ANSI T1.403

Telcordia GR-1244-CORE Stratum 4/4E

64 - 83 ppm

01

E1

ITU-T G.703

ETSI ETS 300 011

100 - 130 ppm

10

PDH Stratum 3

Telcordia GR-1244-CORE Stratum 3

9.2 - 12 ppm

11

SDH

ITU-T G.813 Option 1

Telcordia GR-253-CORE

9.2 - 12 ppm

Table 1 - Application Selection and the Out of Range Limits

APP_SEL

SEC_MSTR

Detected REF Frequency

Loop Filter Bandwidth

Phase Slope

Limiting

00, 01, 10

0

any

1.8 Hz

61

µ/s

11

0

any

3.6 Hz

7.5

µ/s

00, 01, 10, 11

1

2 kHz

14 Hz

9.5 ms /s

8 kHz

58 Hz

9.5 ms /s

1.544 MHz, 2.048 MHz,

8.192 MHz, 16.384 MHz,

19.44 MHz

922 Hz

9.5 ms /s

Table 2 - Loop Filter and Limiter Settings

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