ACS8520 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8520' PDF : 150 Pages View PDF
ADVANCED COMMUNICATIONS
Table 16 T0 APLL Frequencies
T0 APLL Frequency
T0 Mode
311.04
311.04 MHz
98.304 MHz
131.072 MHz
148.224 MHz
98.816 MHz
-
-
Normal (digital feedback)
Normal (analog feedback)
12E1 (digital feedback)
16E1 (digital feedback)
24DS1 (digital feedback)
16DS1 (digital feedback)
Do not use
Do not use
ACS8520 SETS
FINAL
T0 DPLL Frequency Control Register Bits
Reg. 65 Bits[2:0]
000
001
010
011
100
101
110
111
DATASHEET
Output Jitter Level
ns (p-p)
<0.5
<0.5
<2
<2
<2
<2
-
-
Table 17 T4 APLL Frequencies
T4 APLL
Frequency
T4 Mode
311.04 MHz
311.04 MHz
Squelched
Normal
T4 Forward DFS T4 DPLL Frequency T4 APLL for T0
Frequency Control Register Bits Enable Register Bit
(MHz)
Reg. 64 Bits [2:0]
Reg. 65 Bit 6
T0 Frequency to T4 Output Jitter Level
APLL Register Bits
ns (p-p)
Reg. 65 Bits [5:4]
77.76
000
0
XX
<0.5
77.76
001
0
XX
<0.5
98.304 MHz 12E1
24.576
010
0
XX
<0.5
131.072 MHz 16E1
32.768
011
0
148.224 MHz 24DS1
37.056
100
0
(2*18.528)
XX
<0.5
XX
<0.5
98.816 MHz 16DS1
24.704
101
0
XX
<0.5
274.944 MHz E3
68.736
110
0
(2*34.368)
XX
<0.5
178.944 MHz DS3
44.736
111
0
XX
<0.5
98.304 MHz T0-12E1
-
131.072 MHz T0-16E1
-
148.224 MHz T0-24DS1
-
98.816 MHz T0-16DS1
-
XXX
1
XXX
1
XXX
1
XXX
1
00
<2
01
<2
10
<2
11
<2
Revision 3.02/October 2005 © Semtech Corp.
Page 40
www.semtech.com
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