ACS8525T Semtech, ACS8525T Datasheet - Page 28
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ACS8525T
Manufacturer Part Number
ACS8525T
Description
Line Card Protection Switch for SONET/SDH Systems
Manufacturer
Semtech
Datasheet
1.ACS8525T.pdf
(112 pages)
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Part Number
Manufacturer
Quantity
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Part Number:
ACS8525T
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
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Table 10 APLL2 Frequencies (cont...)
Table 11 O1 and O2 Output Frequency Selection
Revision 3.01/August 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
98.816 MHz
274.944 MHz
178.944 MHz
98.304 MHz
131.072 MHz
148.224 MHz
98.816 MHz
Frequency
APLL2
Value in Register
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
DPLL2-16DS1
DPLL2-E3
DPLL2-DS3
DPLL1-12E1
DPLL1-16E1
DPLL1-24DS1
DPLL1-16DS1
DPLL Mode
Output Frequency for given “Value in Register” for each Output Port’s Cnf_output_frequency Register
DPLL2 Forward
DFS Frequency
24.704
68.736
(2*34.368)
44.736
(MHz)
-
-
-
-
Reg. 61 Bits [3:0]
Output O2
APLL1/48
APLL1/16
APLL1/12
APLL2/64
APLL2/48
APLL2/16
APLL1/8
APLL1/6
APLL1/4
APLL2/8
APLL2/4
DPLL2 Freq Control
Digital2
Digital1
Reg. 64 Bits [2:0]
2 kHz
8 kHz
Off
Register Bits
111
101
110
XXX
XXX
XXX
XXX
FINAL
Page 28
0 (DPLL2 enabled)
0 (DPLL2 enabled)
0 (DPLL2 enabled)
1 (DPLL1 enabled)
1 (DPLL1 enabled)
1 (DPLL1 enabled)
1 (DPLL1 enabled)
APLL2 Input from
Reg. 65 Bit 6
DPLL1 or 2.
DPLL1 + Synthesis
Reg. 65 Bits [5:4]
Freq to APLL2
Register Bits
Reg. 62 Bits [7:4]
ACS8525 LC/P
Output O1
APLL1/16
APLL1/12
APLL2/64
APLL2/48
APLL2/16
APLL1/1
APLL1/2
APLL1/8
APLL1/6
APLL1/4
APLL2/8
APLL2/4
00
01
10
11
Digital1
XX
XX
XX
2 kHz
8 kHz
Off
DATASHEET
www.semtech.com
Output Jitter
Level ns (p-p)
<0.5
<0.5
<0.5
<2
<2
<2
<2
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