ACS8522A SETS LITE
ADVANCED COMMS & SENSING
Address (hex): 53
FINAL
DATASHEET
Register Name cnfg_decay_rate_0
Description
(R/W) Register to program the
“decay” or “leak” rate for Leaky
Bucket Configuration 0.
Default Value
0000 0001
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Leaky Bucket Configuration
decay_rate_0_value
Bit No.
Description
Bit Value Value Description
[7:2]
[1:0]
Not used.
decay_rate_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 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.
-
-
00
Bucket decay rate of 1 every 128 ms.
01
Bucket decay rate of 1 every 256 ms.
10
Bucket decay rate of 1 every 512 ms.
11
Bucket decay rate of 1 every 1024 ms.
Address (hex): 54
Register Name cnfg_upper_threshold_1
Description
(R/W) Register to program the
activity alarm setting limit for
Leaky Bucket Configuration 1.
Default Value 0000 0110
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Leaky Bucket Configuration upper_threshold_1_value
Bit 1
Bit 0
Bit No.
Description
Bit Value Value Description
[7:0]
upper_threshold_1_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. 57 (cnfg_decay_rate_1), in
which this does not occur, the accumulator is
decremented by 1.
When the accumulator count reaches the value
programmed as the upper_threshold_1_value, the
Leaky Bucket raises an input inactivity alarm.
-
Value at which the Leaky Bucket will raise an
inactivity alarm.
Revision 1.00/September 2007 © Semtech Corp.
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