ACS8514 Semtech Corporation, ACS8514 Datasheet - Page 60

• Manufacturer Part Number: ACS8514
• Description: Synchronous Equipment Timing Source Partner IC for 2nd T4 Dpll, Accurate Monitoring & Input Extender
• Manufacturer: Semtech Corporation

Revision 3.00 April 2007 © Semtech Corp.
Address(hex): 57
Address(hex): 58
Register Name
Register Name
ADVANCED COMMS & SENSING
Bit No.
Bit No.
Bit 7
[7:2]
[1:0]
Bit 7
[7:0]
cnfg_decay_rate_1
Description
Not used.
decay_rate_1_value
The Leaky Bucket type activity monitor 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.
cnfg_upper_threshold_2
Description
upper_threshold_2_value
The Leaky Bucket type activity monitor 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 register 5Bh, in which
this does not occur, the accumulator is
decremented by 1.
When the accumulator count reaches the value
programmed as the upper_threshold_2_value, the
Leaky Bucket raises an input inactivity alarm.
Bit 6
Bit 6
Bit 5
Bit 5
Description
Description
upper_threshold_2_value
Bit 4
Bit 4
Page 60
FINAL
(R/W) Register to program the
"decay" or "leak" rate for Leaky
Bucket Configuration 1.
(R/W) Register to program the
activity alarm setting limit for
Leaky Bucket Configuration 2.
00000001
11111111
Bit Value
Bit Value
Bit 3
Bit 3
00
01
10
11
to
-
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 1024 ms.
Value Description
Value at which the Leaky Bucket will raise an
inactivity alarm.
ACS8514 SETS Buddy
Bit 2
Bit 2
Default Value
Default Value
Bit 1
Bit 1
decay_rate_1_value
DATASHEET
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0000 0001
0000 0110
Bit 0
Bit 0