ACS8520T Semtech, ACS8520T Datasheet - Page 35

• 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
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Frequency (MHz, unless stated otherwise)
2 kHz
2 kHz
8 kHz
8 kHz
1.536
1.536
1.544
1.544
1.544
1.544
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.059
2.059
2.059
2.316
2.316
2.731
2.731
2.731
2.796
3.088
3.088
3.088
3.088
3.088
(not TO4/TO5)
(not TO4/TO5)
(not TO4/TO5)
(not TO4/TO5)
via Digital1 (not TO7) or Digital2 (not TO6) 77.76 MHz Analog
via Digital1 (not TO7) or Digital2 (not TO6) Any digital feedback mode
(not TO4/TO5)
(not TO4/TO5)
(not TO6)
via Digital1 (not TO7) or Digital2 (not TO6) 77.76 MHz Analog
via Digital1 (not TO7) or Digital2 (not TO6) Any digital feedback mode
(not TO6)
(not TO4/TO5)
(not TO4/TO5)
(not TO6)
(not TO4/TO5)
(not TO6)
via Digital1 (not TO7) or Digital2 (not TO6) 77.76 MHz Analog
via Digital1 (not TO7) or Digital2 (not TO6) Any digital feedback mode
T0 DPLL Mode
77.76 MHz Analog
Any digital feedback mode
77.76 MHz Analog
Any digital feedback mode
12E1 mode
16DS1 mode
16E1 mode
24DS1 mode
FINAL
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Page 35
T4 DPLL Mode
12E1 mode
16DS1 mode
12E1 mode
16E1 mode
16DS1 mode
24DS1 mode
16E1 mode
DS3 mode
24DS1 mode
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Select T4 DPLL
Select T4 DPLL
Select T4 DPLL
T4 APLL Input Mux
Select T0 DPLL 12E1
Select T0 DPLL 16DS1
Select T4 DPLL
Select T0 DPLL 12E1
Select T4 DPLL
Select T0 DPLL 16E1
Select T4 DPLL
Select T0 DPLL 16DS1
Select T0 DPLL 24DS1
Select T4 DPLL
Select T0 DPLL 16E1
Select T4 DPLL
Select T4 DPLL
Select T0 DPLL 24DS1
ACS8520 SETS
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-
-
-
-
-
-
-
-
-
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DATASHEET
www.semtech.com
Jitter Level (typ)
1400
1400
3800
3800
3800
3800
3800
3800
500
250
200
150
220
110
110
rms
500
250
400
900
200
150
760
400
220
250
110
110
110
110
(ps)
60
60
0.75
0.75
0.75
0.75
0.75
(ns)
0.6
0.6
2.3
1.5
1.2
1.0
2.3
1.5
2.0
1.2
4.5
1.2
1.0
2.6
1.5
1.2
1.6
1.0
p-p
13
18
13
18
13
18
5
5