ACS8520T Semtech, ACS8520T Datasheet - Page 112
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ACS8520T
Manufacturer Part Number
ACS8520T
Description
Synchronous Equipment Timing Source (SETS) for Stratum 3/4E/4 and SMC Systems
Manufacturer
Semtech
Datasheet
1.ACS8520T.pdf
(150 pages)
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Address (hex):
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
MFrSync_en
Bit No.
Bit 7
[3:0]
7
6
5
4
63
cnfg_output_frequency
(TO7 to TO11)
FrSync_en
Description
MFrSync_en
Register bit to enable the 2 kHz Sync output (TO11).
FrSync_en
Register bit to enable the 8 kHz Sync output (TO10).
TO9_en
Register bit to enable the BITS output from the TO9.
TO8_en
Register bit to enable the AMI composite clock
output from TO8.
output_freq_7
Configuration of the output frequency available at
output TO7. Many of the frequencies available are
dependent on the frequencies of the T0 APLL and
the T4 APLL. These are configured in Reg. 64 and
Reg. 65. For more detail see the detailed section on
configuring the output frequencies.
Bit 6
TO9_en
Bit 5
Description
TO8_en
Bit 4
FINAL
Page 112
(R/W) Register to configure and
enable the frequencies available
on outputs TO7 through to TO11.
Bit Value
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Bit 3
0
1
0
1
0
1
0
1
Value Description
Output TO11 disabled.
Output TO11 enabled.
Output TO10 disabled.
Output TO10 enabled.
Output TO9 disabled.
Output TO9 enabled.
Output TO8 disabled.
Output TO8 enabled.
Output disabled.
2 kHz.
8 kHz.
Digital2 (Reg. 39 cnfg_digital_frequencies).
T0 APLL frequency/2.
T0 APLL frequency/48.
T0 APLL frequency/16.
T0 APLL frequency/12.
T0 APLL frequency/8.
T0 APLL frequency/6.
T0 APLL frequency/4.
T4 APLL frequency/64.
T4 APLL frequency/48.
T4 APLL frequency/16.
T4 APLL frequency/8.
T4 APLL frequency/4.
Bit 2
output_freq_7
Default Value
ACS8520 SETS
Bit 1
DATASHEET
www.semtech.com
1111 0110
Bit 0
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