ACS8515LC View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8515LC' PDF : 50 Pages View PDF
ACS8515 Rev2.1 LC/P
ADVANCED COMMUNICATIONS
Table 11. Register Map Description (continued).
FINAL
Addr. Parameter Name
(Hex)
sts_sources_valid
0E
0F
sts_reference_sources
11
12
14
cnfg_ref_selection_priority
18
19
1A
1B
1C
1D
1E
Description
This register contains a bit to show validity for every reference source.
=1 Valid source
=0 Invalid source (default)
Bits (7:6) Unused
Default
Value (bin)
Bit 5
SEC2DIFF
Bit 4
Bit 3
SEC1DIFF
SEC2
XX0000XX
Bit 2
SEC1
Bits (1:0) Unused
Bits (7:1) Unused
Bit 0
SEC3
This register holds the status of each of the input reference sources. The status of each reference
source is shown in a 4-bit field. Each bit is active high. To aid status checking, a copy of each
status bit 3 is provided in the sts_sources_valid register. The status is reported as follows: (Each
bit may be cleared individually)
XXXXXXX0
Status bit 3 = Source valid (no alarms) (bit 3 is combination of bits 0-2) (default 0)
Status bit 2 = Out-of-band alarm (default 1)
Status bit 1 = No activity alarm (default 1)
Status bit 0 = Phase lock alarm (default 0)
Bits (7:4) Status of input reference source SEC2
Bits (3:0) Status of input reference source SEC1
Bits (7:4) Status of input reference source SEC2DIFF
Bits (3:0) Status of input reference source SEC1DIFF
Bits (7:4) Unused
Bits (3:0) Status of input reference source SEC3
This register holds the priority of each of the input reference sources. The priority values are all
relative to each other, with lower-valued numbers taking higher priorities. Only the values 1 to
15 (dec) are valid - '0' disables the reference source. Each reference source must be given a
unique priority, however two sources given the same priority number will be assigned on a first in
first out basis.
01100110
01100110
XXXX0110
It is recommended to reserve the priority value '1' as this is used when forcing reference selection
via the cnfg_ref_selection register. If the user does not intend to use the cnfg_ref_selection
register then priority value '1' need not be reserved.
Bits (7:0) Must be set to '00000000' during initialisation
Bits (7:4) Programmed priority of input reference source SEC2
Bits (3:0) Programmed priority of input reference source SEC1
Bits (7:4) Programmed priority of input reference source SEC2DIFF
Bits (3:0)
Bits (7:0)
Bits (7:4)
Programmed priority of input reference source SEC1DIFF
Must be set to '00000000' during initialisation
Must be set to '0000' during initialisation
Bits (3:0) Programmed priority of input reference source SEC3
Bits (7:0) Must be set to '00000000' during initialisation
Bits (7:0) Must be set to '00000000' during initialisation
00110010
01010100
01110110
10011000
10111010
11010001
11111110
Revision 2.01/December 2005 Semtech Corp.
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