ACS8525 Semtech Corporation, ACS8525 Datasheet - Page 55

• Manufacturer Part Number: ACS8525
• Description: Line Card Protection Switch For Sonet/sdh Systems
• Manufacturer: Semtech Corporation

Address (hex):
Address (hex):
Revision 3.00/October 2003 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
Register Name
divn_<input>
Bit No.
Bit No.
Bit 7
[7:4]
[3:0]
Bit 7
[5:4]
7
6
1C
22
cnfg_ref_selection_priority
SEC3
Description
Not used.
cnfg_ref_selection_priority_9
This 4-bit value represents the relative priority of
input SEC3. The smaller the number, the higher the
priority; zero disables the input.
cnfg_ref_source_frequency
<input>
For Reg. 22, <input> =
SEC1 TTL
lock8k_<input>
Description
divn_<input>
This bit selects whether or not input SEC1 TTL 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_<input>
This bit selects whether or not input SEC1 TTL 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_<input> is set (bit =1).
Bucket_id_<input>
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 <input>.
Bit 6
Bit 6
Bit 5
Bit 5
Bucket_id_<input>
Description
Description
Bit 4
Bit 4
FINAL
Page 55
(R/W) Configures the relative
priority of input source SEC3.
(R/W) Configuration of the
frequency and input monitoring
for input <input>.
0001-1111
Bit Value
Bit Value
0000
Bit 3
Bit 3
00
01
10
11
0
1
0
1
-
reference_source_frequency_<input>
Value Description
-
Input SEC3 unavailable for automatic selection.
Input SEC3 priority value.
Value Description
Input <input> fed directly to DPLL and monitor.
Input <input> fed to DPLL and monitor via pre-
divider.
Input <input> fed directly to DPLL.
Input <input> fed to DPLL via preset pre-divider.
Input <input> activity monitor uses Leaky Bucket
Configuration 0.
Input <input> activity monitor uses Leaky Bucket
Configuration 1.
Input <input> activity monitor uses Leaky Bucket
Configuration 2.
Input <input> activity monitor uses Leaky Bucket
Configuration 3.
programmed_priority_SEC3
Bit 2
Bit 2
Default Value
Default Value
ACS8525 LC/P
Bit 1
Bit 1
DATASHEET
www.semtech.com
0000 0100
SEC1 TTL=
0000 0000
Bit 0
Bit 0