ACS8525AT Semtech, ACS8525AT Datasheet - Page 53

• Manufacturer Part Number: ACS8525AT
• Manufacturer: Semtech

Specifications of ACS8525AT

• Lead Free Status / RoHS Status: Compliant

Address (hex):
Address (hex):
Revision 1.00/September 2007 © Semtech Corp.
ADVANCED COMMS & SENSING
Register Name
Address (hex):
Address (hex):
Register Name
[7:6] & [3:2]
Bit No.
Bit No.
5 & 1
4 & 0
Bit 7
Bit 7
[7:4]
11
19
sts_reference_sources
SEC1 & SEC2 TTL
Description
Not Used
Input Activity Alarm
Alarm indication from the activity monitors.
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.
cnfg_ref_selection_priority
SEC1 & SEC2 TTL
Description
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).
12
14
programmed_priority_SEC2 TTL
Bit 6
Bit 6
Reg. 11: Status of SEC2 TTL Input
Reg. 12: Status of SEC2 DIFF
Input
As Reg. 11, but for sts_reference_sources, Inputs: SEC1 & SEC2 DIFF
As Reg. 11, but for sts_reference_sources, Input:
Bit 5
Bit 5
Description
Description
Bit 4
Bit 4
FINAL
Page 53
(RO except for test when R/W)
Reports any alarms active on
inputs.
(R/W) Configures the relative
priority of input sources SEC1 TTL
and SEC2 TTL.
0001-1111
Bit Value
Bit Value
0000
Bit 3
Bit 3
0
1
0
1
-
SEC3
Value Description
-
No alarm.
Input has an active “no activity” alarm.
No alarm.
Phase lock alarm.
Value Description
Input SEC2 TTL unavailable for automatic selection.
Input SEC2 TTL priority value.
programmed_priority_SEC1 TTL
Bit 2
Bit 2
ACS8525A LC/P
Default Value
Reg. 11: Status of SEC1 TTL Input
Reg. 12: Status of SEC1 DIFF
Input
Reg. 14: Status of SEC3 Input
Default Value
Bit 1
Bit 1
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0010 0010
0011 0010
Bit 0
Bit 0