ACS8525AP View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8525AP' PDF : 112 Pages View PDF
ACS8525A LC/P
ADVANCED COMMS & SENSING
Address (hex): 11
FINAL
Register Name sts_reference_sources
SEC1 & SEC2 TTL
Description
(RO except for test when R/W)
Reports any alarms active on
inputs.
DATASHEET
Default Value 0010 0010
Bit 7
Bit 6
Bit 5
Bit 4
Reg. 11: Status of SEC2 TTL Input
Reg. 12: Status of SEC2 DIFF
Input
Bit 3
Bit 2
Bit 1
Bit 0
Reg. 11: Status of SEC1 TTL Input
Reg. 12: Status of SEC1 DIFF
Input
Reg. 14: Status of SEC3 Input
Bit No.
Description
Bit Value Value Description
[7:6] & [3:2] Not Used
5&1
Input Activity Alarm
Alarm indication from the activity monitors.
4&0
Phase Lock Alarm
If the DPLL cannot indicate that it is phase locked
onto the current source within 100 seconds this
alarm will be raised.
-
-
0
No alarm.
1
Input has an active “no activity” alarm.
0
No alarm.
1
Phase lock alarm.
Address (hex): 12
Address (hex): 14
As Reg. 11, but for sts_reference_sources, Inputs: SEC1 & SEC2 DIFF
As Reg. 11, but for sts_reference_sources, Input: SEC3
Address (hex): 19
Register Name cnfg_ref_selection_priority
SEC1 & SEC2 TTL
Description
(R/W) Configures the relative
Default Value
priority of input sources SEC1 TTL
and SEC2 TTL.
0011 0010
Bit 7
Bit 6
Bit 5
programmed_priority_SEC2 TTL
Bit 4
Bit 3
Bit 2
Bit 1
programmed_priority_SEC1 TTL
Bit 0
Bit No.
Description
Bit Value Value Description
[7:4]
programmed_priority_SEC2 TTL
This 4-bit value represents the relative priority of
input SEC2 TTL. The smaller the number, the higher
the priority; zero disables the input.
*When the priority of this input is set to >0, the
priority of SEC2 DIFF is set to 0 (disabled).
0000
Input SEC2 TTL unavailable for automatic selection.
0001-1111 Input SEC2 TTL priority value.
Revision 1.00/September 2007 © Semtech Corp.
Page 53
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