ACS8526LC Semtech Corporation, ACS8526LC Datasheet - Page 45
ACS8526LC
Manufacturer Part Number
ACS8526LC
Description
Line Card Protection Switch for PDH, Sonet or SDH Systems
Manufacturer
Semtech Corporation
Datasheet
1.ACS8526LC.pdf
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Revision 4.01/June 2006 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
Register Name
Bit No.
Bit No.
Bit 7
[7:0]
Bit 7
[7:2]
[1:0]
52
53
cnfg_bucket_size
Description
bucket_size_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), in which
this does not occur, the accumulator is
decremented by 1.
The number in the Bucket cannot exceed the value
programmed into this register.
cnfg_decay_rate
Description
Not used.
decay_rate_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 this register, in which this does not
occur, the accumulator is decremented by 1.
The Leaky Bucket can be programmed to “leak” or
“decay” at the same rate as the “fill” cycle, or
effectively at one half, one quarter, or one eighth of
the fill rate.
Bit 6
Bit 6
Bit 5
Bit 5
bucket_size_value (Activity alarm, Leaky Bucket - size)
Description
Description
Bit 4
Bit 4
FINAL
Page 45
(R/W) Register to program the
maximum size limit for the Leaky
Bucket Configuration.
(R/W) Register to program the
“decay” or “leak” rate for the
Leaky Bucket Configuration.
Bit Value
Bit Value
Bit 3
Bit 3
00
01
10
11
-
-
Value Description
Value at which the Leaky Bucket will stop
incrementing, even with further inactive periods.
Value Description
-
Bucket decay rate of 1 every 128 ms.
Bucket decay rate of 1 every 256 ms.
Bucket decay rate of 1 every 512 ms.
Bucket decay rate of 1 every 1,024 ms.
Bit 2
Bit 2
ACS8526 LC/P LITE
Default Value
Default Value
decay_rate_value (Activity alarm,
Leaky Bucket - leak rate)
Bit 1
Bit 1
DATASHEET
www.semtech.com
0000 1000
0000 0001
Bit 0
Bit 0
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