ACS8525AT Semtech, ACS8525AT Datasheet - Page 27

• Manufacturer Part Number: ACS8525AT
• Manufacturer: Semtech

Specifications of ACS8525AT

• Lead Free Status / RoHS Status: Compliant

Table 8 Frequency Divider Look-up
Note...All frequencies in MHz
Table 9 APLL1 Frequencies
Note...If using Synthesis for inputs to both APLL1 and APLL2, then they must both use the same synthesis settings.
Table 10 APLL2 Frequencies
Revision 1.00/September 2007 © Semtech Corp.
ADVANCED COMMS & SENSING
OC-N Rates
E3
DS3
24DS1
16E1
16DS1
12E1
311.04
311.04 MHz
98.304 MHz
131.072 MHz
148.224 MHz
98.816 MHz
311.04 MHz
311.04 MHz
98.304 MHz
131.072 MHz
148.224 MHz
Transmission Rate
Frequency
APLL1 Frequency
APLL2
-
-
DPLL2-Squelched
DPLL2-Normal
DPLL2-12E1
DPLL2-16E1
DPLL2-24DS1
DPLL Mode
311.04
274.944
178.944
148.224
131.072
98.816
98.304
APLL Frequency
Normal (digital feedback)
16E1 (digital feedback)
24DS1 (digital feedback)
Normal (analog feedback)
12E1 (digital feedback)
16DS1 (digital feedback)
Do not use
Do not use
Synthesis/MUX setting for
DPLL2 Forward
DFS Frequency
77.76
77.76
24.576
32.768
37.056
(2*18.528)
APLL1 input
(MHz)
155.52
137.472
89.472
74.112
65.536
49.408
49.152
APLL/2
DPLL2 Freq Control
77.76
68.376
44.736
37.056
32.768
24.704
24.576
APLL/4
Reg. 64 Bits [2:0]
Register Bits
000
001
010
011
100
FINAL
Page 27
DPLL1 Frequency Control Register Bits
51.84
24,704
21.84533
16.46933
16.384
APLL/6
-
-
Reg. 65 Bits[2:0]
0 (DPLL2 enabled)
0 (DPLL2 enabled)
0 (DPLL2 enabled)
0 (DPLL2 enabled)
0 (DPLL2 enabled)
APLL2 Input from
38.88
34.368
22.368
18.528
16.384
12.352
12.288
APLL/8
Reg. 65 Bit 6
DPLL1 or 2.
000
010
011
100
101
001
110
111
25.92
12.352
10.92267
8.234667
8.192
APLL/12
-
-
DPLL1 + Synthesis
Reg. 65 Bits [5:4]
ACS8525A LC/P
19.44
17.184
11.184
8.192
6.144
9.264
6.176
Freq to APLL2
APLL/16
Register Bits
XX
XX
XX
XX
XX
6.48
5.728
3.728
3.088
2.730667
2.058667
2.048
Output Jitter Level
APLL/48
DATASHEET
www.semtech.com
ns (p-p)
<0.5
<0.5
<2
<2
<2
<2
Output Jitter
Level ns (p-p)
<0.5
<0.5
<0.5
<0.5
<0.5
-
-
4.86
4.296
2.796
2.316
2.048
1.544
1.536
APLL/64