ACS8520T Semtech, ACS8520T Datasheet - Page 78

• Manufacturer Part Number: ACS8520T
• Description: Synchronous Equipment Timing Source (SETS) for Stratum 3/4E/4 and SMC Systems
• Manufacturer: Semtech

Address (hex):
Use <n> = 3
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
divn_<n>
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Address (hex):
Bit No.
Bit 7
[5:4]
[3:0]
22 (cont...)
cnfg_ref_source_frequency
_<n>, where for Reg 22, n =
3
lock8k_<n>
Description
bucket_id_<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 I<n>.
reference_source_frequency_<n>
Programs the frequency of the reference source
connected to input I<n>. If divn_<n> is set, then
this value should be set to 0000 (8 kHz).
23
24
25
26
27
28
29
2A
2B
2C
2D
Bit 6
cnfg_ref_source_frequency_4
cnfg_ref_source_frequency_5
cnfg_ref_source_frequency_6
cnfg_ref_source_frequency_7
cnfg_ref_source_frequency_8
cnfg_ref_source_frequency_9
cnfg_ref_source_frequency_10 Use description for Reg. 22, but use <n> = 10
cnfg_ref_source_frequency_11 Use description for Reg. 22, but use <n> = 11
cnfg_ref_source_frequency_12 Use description for Reg. 22, but use <n> = 12
cnfg_ref_source_frequency_13 Use description for Reg. 22, but use <n> = 13
cnfg_ref_source_frequency_14 Use description for Reg. 22, but use <n> = 14
Bit 5
bucket_id_<n>
Description
Bit 4
Use description for Reg. 22, but use <n> = 4
Use description for Reg. 22, but use <n> = 5
Use description for Reg. 22, but use <n> = 6
Use description for Reg. 22, but use <n> = 7
Use description for Reg. 22, but use <n> = 8
Use description for Reg. 22, but use <n> = 9
FINAL
Page 78
(R/W) Configuration of the
frequency and input monitoring
for input I<n>.
1011-1111
Bit Value
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
Bit 3
00
01
10
11
reference_source_frequency_<n>
Value Description
Input I<n> activity monitor uses Leaky Bucket
Configuration 0.
Input I<n> activity monitor uses Leaky Bucket
Configuration 1.
Input I<n> activity monitor uses Leaky Bucket
Configuration 2.
Input I<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.
155.52 MHz.
2 kHz.
4 kHz.
Not used.
Bit 2
Default Value
ACS8520 SETS
Bit 1
Default = 0000 0000
Default = 0000 0011
Default = 0000 0011
Default = 0000 0011
Default = 0000 0011
Default = 0000 0011
Default = 0000 0011
Default = 0000 0011
Default = 0000 0001
Default = 0000 0001
Default = 0000 0001
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0000 0000
Bit 0