ACS8520 datasheet(37/150 Pages) SEMTECH

Part #	ACS8520

Description	Synchronous Equipment Timing Source for Stratum 3/4E/4 and SMC Systems

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Manufacturer	SEMTECH [Semtech Corporation]

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ADVANCED COMMUNICATIONS

FINAL

DATASHEET

Revision 3.02/October 2005 © Semtech Corp.

Page 37

www.semtech.com

ACS8520 SETS

12.288

-

Select T0 DPLL 12E1

250

1.5

12.352

24DS1 mode

-

110

0.75

12.352

16DS1 mode

-

760

2.6

12.352

-

16DS1 mode

Select T4 DPLL

200

1.2

12.352

-

Select T0 DPLL 16DS1

150

1.0

12.352 via Digital1 (not TO7) or Digital2 (not TO6) 77.76 MHz Analog

-

3800

13

12.352 via Digital1 (not TO7) or Digital2 (not TO6) Any digital feedback mode

-

3800

18

16.384

12E1 mode

-

900

4.5

16.384

16E1 mode

-

250

1.6

16.384

-

16E1 mode

Select T4 DPLL

400

2.0

16.384

-

Select T0 DPLL 16E1

220

1.2

16.384 via Digital1 (not TO7) or Digital2 (not TO6) 77.76 MHz Analog

-

3800

13

16.384 via Digital1 (not TO7) or Digital2 (not TO6) Any digital feedback mode

-

3800

18

16.469

16DS1 mode

-

760

2.6

17.184

-

E3 mode

Select T4 DPLL

120

1.0

18.528

24DS1 mode

-

110

0.75

18.528

-

24DS1 mode

Select T4 DPLL

110

0.75

18.528

-

Select T0 DPLL 24DS1

110

0.75

19.44

77.76 MHz analog

-

60

0.6

19.44

77.76 MHz digital

-

60

0.6

19.44

-

77.76MHz mode Select T4 DPLL

60

0.6

21.845

16E1 mode

-

250

1.6

22.368

-

DS3 mode

Select T4 DPLL

110

1.0

24.576

12E1 mode

-

900

4.5

24.576

-

12E1 mode

Select T4 DPLL

500

2.3

24.576

-

Select T0 DPLL 12E1

250

1.5

24.704

24DS1 mode

-

110

0.75

24.704

16DS1 mode

-

760

2.6

24.704

-

16DS1 mode

Select T4 DPLL

200

1.2

24.704

-

Select T0 DPLL 16DS1

150

1.0

25.92

77.76 MHz analog

-

60

0.6

Table 14 Output Frequency Selection (cont...)

Frequency (MHz, unless stated otherwise)

T0 DPLL Mode

T4 DPLL Mode

T4 APLL Input Mux

Jitter Level (typ)

rms

(ps)

p-p

(ns)

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