ACS8520T Semtech, ACS8520T Datasheet - Page 101

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

Address (hex):
Address (hex):
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
Register Name
Bit No.
Bit No.
Bit 7
[7:0]
Bit 7
[7:0]
50
51
cnfg_upper_threshold_0
Description
upper_threshold_0_value
The Leaky Bucket operates on a 128 ms cycle. If,
during a cycle, it detects that an input has either
failed or has been erratic, then for each cycle in
which this occurs, the accumulator is incremented
by 1, and for each period of 1, 2, 4, or 8 cycles, as
programmed in Reg. 53 (cnfg_decay_rate_0), in
which this does not occur, the accumulator is
decremented by 1.
When the accumulator count reaches the value
programmed as the upper_threshold_0_value, the
Leaky Bucket raises an input inactivity alarm.
cnfg_lower_threshold_0
Description
lower_threshold_0_value
The Leaky Bucket operates on a 128 ms cycle. If,
during a cycle, it detects that an input has either
failed or has been erratic, then for each cycle in
which this occurs, the accumulator is incremented
by 1, and for each period of 1, 2, 4, or 8 cycles, as
programmed in Reg. 53 (cnfg_decay_rate_0), in
which this does not occur, the accumulator is
decremented by 1.
The lower_threshold_0_value is the value at which
the Leaky Bucket will reset an inactivity alarm.
Bit 6
Bit 6
Bit 5
Bit 5
Description
Description
upper_threshold_0_value
lower_threshold_0_value
Bit 4
Bit 4
FINAL
Page 101
(R/W) Register to program the
activity alarm setting limit for
Leaky Bucket Configuration 0.
(R/W) Register to program the
activity alarm resetting limit for
Leaky Bucket Configuration 0.
Bit Value
Bit Value
Bit 3
Bit 3
-
-
Value Description
Value at which the Leaky Bucket will raise an
inactivity alarm.
Value Description
Value at which the Leaky Bucket will reset an
inactivity alarm.
Bit 2
Bit 2
Default Value
Default Value
ACS8520 SETS
Bit 1
Bit 1
DATASHEET
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0000 0110
0000 0100
Bit 0
Bit 0