ACS8522AT View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
ACS8522AT Datasheet PDF : 118 Pages
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ACS8522A SETS LITE
ADVANCED COMMS & SENSING
Address (hex): 22
FINAL
Use <n> = 1
Register Name cnfg_ref_source_frequency
Description
SEC<n>, where for Reg 22, <n> =
1
(R/W) Configuration of the
frequency and input monitoring
for input SEC<n>.
DATASHEET
Default Value 0000 0000
Bit 7
divn_SEC<n>
Bit 6
lock8k_SEC<n>
Bit 5
Bit 4
bucket_id_SEC<n>
Bit 3
Bit 2
Bit 1
reference_source_frequency_SEC<n>
Bit 0
Bit No.
Description
Bit Value Value Description
7
6
[5:4]
[3:0]
divn_SEC<n>
This bit selects whether or not input SEC<n> is
divided in the programmable pre-divider prior to
being input to the DPLL and frequency monitor- see
Reg. 46 and Reg. 47 (cnfg_freq_divn).
lock8k_SEC<n>
This bit selects whether or not input SEC<n> is
divided in the preset pre-divider prior to being input
to the DPLL. This results in the DPLL locking to the
reference after it has been divided to 8 kHz. This bit
is ignored when divn_SEC<n> is set (bit =1).
bucket_id_SEC<n>
Every input has its own Leaky Bucket used for
activity monitoring. There are four possible
configurations for each Leaky Bucket- see Reg. 50
to Reg. 5F. This 2-bit field selects the configuration
used for input SEC<n>.
reference_source_frequency_SEC<n>
Programs the frequency of the reference source
connected to input SEC<n>. If divn_SEC<n> is set,
then this value should be set to 0000 (8 kHz).
0
Input SEC<n> fed directly to DPLL and monitor.
1
Input SEC<n> fed to DPLL and monitor via pre-
divider.
0
Input SEC<n> fed directly to DPLL.
1
Input SEC<n> fed to DPLL via preset pre-divider.
00
01
10
11
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011-1111
Input SEC<n> activity monitor uses Leaky Bucket
Configuration 0.
Input SEC<n> activity monitor uses Leaky Bucket
Configuration 1.
Input SEC<n> activity monitor uses Leaky Bucket
Configuration 2.
Input SEC<n> activity monitor uses Leaky Bucket
Configuration 3.
8 kHz.
1544/2048 kHz (dependant on Bit 2 (ip_sonsdhb)
in Reg. 34).
6.48 MHz.
19.44 MHz.
25.92 MHz.
38.88 MHz.
51.84 MHz.
77.76 MHz.
Not used.
2 kHz.
4 kHz.
Not used.
Address (hex): 23
Address (hex): 27
Address (hex): 28
Use description for Reg. 22, but use <n> = 2
Use description for Reg. 22, but use <n> = 3
Use description for Reg. 22, but use <n> = 4
Default Value: 0000 0000
Default Value: 0000 0011
Default Value: 0000 0011
Revision 1.00/September 2007 © Semtech Corp.
Page 58
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