ACS8522A View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8522A' PDF : 118 Pages View PDF
ACS8522A SETS LITE
ADVANCED COMMS & SENSING
Address (hex): 0F
FINAL
DATASHEET
Register Name sts_sources_valid
Description
(RO) 8 most significant bits of the Default Value 0000 0000
sts_sources_valid register.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SEC4
Bit No.
Description
Bit Value Value Description
[7:1]
0
Not used.
SEC4
Bit indicating if SEC4 is valid. The input is valid if
either it has no outstanding alarms, or it only has a
soft frequency alarm.
-
-
0
Input SEC4 is invalid.
1
Input SEC4 is valid.
Address (hex): 11
Register Name sts_reference_sources
Inputs SEC1 & SEC2
Description
(RO except for test when R/W)
Reports any alarms active on
inputs.
Default Value 0110 0110
Bit 7
Out-of-band
alarm (soft)
Bit 6
Bit 5
Bit 4
Address 11: Status of SEC2 Input
Address 13: Status of SEC3 Input
Out-of-band
alarm (hard)
No activity
alarm
Phase lock
alarm
Bit 3
Out-of-band
alarm (soft)
Bit 2
Bit 1
Bit 0
Address 11: Status of SEC1 Input
Address 14: Status of SEC4 Input
Out-of band
alarm (hard)
No activity
alarm
Phase lock
alarm
Bit No.
Description
Bit Value Value Description
7&3
6&2
5&1
4&0
Out-of-band alarm (soft)
Soft out-of-band alarm bit for input. A “soft” alarm
will not invalidate an input.
Out-of-band alarm (hard)
Hard out-of-band alarm bit for input. A “hard” alarm
will invalidate an input.
No activity alarm
Alarm indication from the activity monitors.
Phase lock alarm
If the DPLL can not indicate that it is phase locked
onto the current source within 100 seconds this
alarm will be raised.
0
No alarm.
1
Alarm armed. Alarm thresholds set by Reg. 49 bits
[7:4], or by Reg. 4A bits 7:4 if the input is currently
selected.
0
No alarm.
1
Alarm armed. Alarm thresholds set by Reg. 49 bits
[3:0], or by Reg. 4A bits [3:0] if the input is currently
selected.
0
No alarm.
1
Input has an active no activity alarm.
0
No alarm.
1
Phase lock alarm.
Revision 1.00/September 2007 © Semtech Corp.
Page 55
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