ACS8522AT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

ACS8522AT

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

Semtech Corporation 

ACS8522A SETS LITE

ADVANCED COMMS & SENSING

Table 12 Output Frequency Selection (cont...)

FINAL

Frequency (MHz, unless stated otherwise)

T0 DPLL Mode

T4 DPLL Mode

155.52 (O4 only)

155.52 (O1 only)

155.52 (O1 only)

311.04 (O1 only)

311.04 (O1 only)

-

77.76 MHz analog

77.76 MHz digital

77.76 MHz analog

77.76 MHz digital

77.76 MHz mode

-

-

-

-

DATASHEET

T4 APLL Input Mux

Select T4 DPLL

-

-

-

-

Jitter Level (typ)

rms pk-pk

(ps) (ns)

60 0.6

60 0.6

60 0.6

60 0.6

60 0.6

Table 13 Frequency Divider Look-up

APLL

Frequency

APLL/2

311.04

155.52

274.944

137.472

APLL/4

77.76

68.376

APLL/6

51.84

-

178.944

89.472

44.736

-

148.224

131.072

98.816

74.112

65.536

49.408

37.056

32.768

24.704

24,704

21.84533

16.46933

98.304

49.152

24.576

16.384

APLL/8

38.88

34.368

22.368

18.528

16.384

12.352

12.288

APLL/12

APLL/16

APLL/48

APLL/64

25.92

-

-

12.352

10.92267

8.234667

8.192

19.44

17.184

11.184

9.264

8.192

6.176

6.144

6.48

5.728

3.728

3.088

2.730667

2.058667

2.048

4.86

4.296

2.796

2.316

2.048

1.544

1.536

Note...All frequencies in MHz

Revision 1.00/September 2007 © Semtech Corp.

Page 35

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