ACS8520T Semtech, ACS8520T Datasheet - Page 39

• Manufacturer Part Number: ACS8520T
• Description: Synchronous Equipment Timing Source (SETS) for Stratum 3/4E/4 and SMC Systems
• Manufacturer: Semtech

Table 14 Output Frequency Selection (cont...)
Table 15 Frequency Divider Look-up
Note...All frequencies in MHz
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Frequency (MHz, unless stated otherwise)
98.304 (TO6 only)
98.816 (TO6 only)
131.07 (TO6 only)
137.47 (TO4/TO5 only)
148.22 (TO6 only)
155.52 (TO4/TO5 only)
155.52 (TO6/TO7 only)
155.52 (TO6/TO7 only)
311.04 (TO6 only)
311.04 (TO6 only)
311.04
274.944
178.944
148.224
131.072
98.816
98.304
Frequency
APLL
155.52
137.472
89.472
74.112
65.536
49.408
49.152
APLL/2
77.76
68.376
44.736
37.056
32.768
24.704
24.576
APLL/4
51.84
24,704
21.84533
16.46933
16.384
APLL/6
T0 DPLL Mode
12E1 mode
16DS1 mode
16E1 mode
24DS1 mode
77.76 MHz analog
77.76 MHz digital
77.76 MHz analog
77.76 MHz digital
-
-
38.88
34.368
22.368
18.528
16.384
12.352
12.288
FINAL
-
-
Page 39
APLL/8
25.92
12.352
10.92267
8.234667
8.192
T4 DPLL Mode
E3 mode
77.76 MHz mode Select T4 DPLL
APLL/12
-
-
-
-
-
-
-
-
-
-
19.44
17.184
11.184
9.264
8.192
6.176
6.144
APLL/16
T4 APLL Input Mux
Select T4 DPLL
ACS8520 SETS
6.48
5.728
3.728
3.088
2.730667
2.058667
2.048
-
-
-
-
-
-
-
-
APLL/48
DATASHEET
www.semtech.com
Jitter Level (typ)
rms
900
760
250
120
110
(ps)
4.86
4.296
2.796
2.316
2.048
1.544
1.536
60
60
60
60
60
APLL/64
0.75
(ns)
4.5
2.6
1.6
1.0
0.6
0.6
0.6
0.6
0.6
p-p