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): 09 (cont...)
FINAL
Register Name sts_operating_mode
Description
(RO) Current operating state of
the device’s internal state
machine.
DATASHEET
Default Value 0000 0001
Bit 7
Sync_alarm
Bit 6
DPLL2_Lock
Bit 5
DPLL1_freq_
soft_alarm
Bit 4
DPLL2_freq_
soft_alarm
Bit 3
Bit 2
Bit 1
Bit 0
DPLL1_operating_mode
Bit No.
Description
Bit Value Value Description
5
4
3
[2:0]
DPLL1_freq_soft_alarm
DPLL1 has a programmable frequency limit and
“soft” alarm limit. The frequency limit is the extent
to which it will track a reference before limiting. The
“soft” limit is the point beyond which the DPLL
tracking a reference will cause an alarm. This bit
reports the status of the “soft” alarm.
DPLL2_freq_soft_alarm
DPLL2 has a programmable frequency limit and
“soft” alarm limit. The frequency limit is the extent
to which it will track a reference before limiting. The
“soft” limit is the point beyond which the DPLL
tracking a reference will cause an alarm. This bit
reports the status of the “soft” alarm.
Not used.
DPLL1_operating_mode
This field is used to report the state of the internal
finite state machine controlling DPLL1.
0
DPLL1 tracking its reference within the limits of the
programmed “soft” alarm.
1
DPLL1 tracking its reference beyond the limits of
the programmed “soft” alarm.
0
DPLL2 tracking its reference within the limits of the
programmed “soft” alarm.
1
DPLL2 tracking its reference beyond the limits of
the programmed “soft” alarm.
-
-
000
Not used.
001
Free Run.
010
Holdover.
011
Not used.
100
Locked.
101
Pre-locked2.
110
Pre-locked.
111
Phase Lost.
Revision 1.00/September 2007 © Semtech Corp.
Page 48
www.semtech.com
Share Link: 
