ACS8509 Semtech Corporation, ACS8509 Datasheet - Page 24
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ACS8509
Manufacturer Part Number
ACS8509
Description
Synchronous Equipment Timing Source for Sonet or SDH Network Elements
Manufacturer
Semtech Corporation
Datasheet
1.ACS8509.pdf
(68 pages)
- Current page: 24 of 68
- Download datasheet (565Kb)
Table 14 Register Description (cont...)
Revision 2.00/January 2006 © Semtech Corp.
ADVANCED COMMUNICATIONS
05
06
08
09
Addr.
(Hex)
sts_interrupts
sts_T4_inputs
sts_operating_mode
Register Name
Bit 7
Bit 6
Bits (5:0) Unused.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bits (1:0) Unused.
This register holds the status flags of the T
hold its state until reset. The bit may be cleared by writing a “1” to it, thus resetting
the interrupt. Writing “0”s will have no effect. This bit can also generate an nterrupt.
Bits (7:5) Unused.
Bit 4
=1
=0
Bits (3:0) Unused.
This read-only register holds the current operating state of the main state machine.
Figure 10 shows how the values of the “operating state” variable match with the
individual states.
Bits (7:3) Unused.
Bits (2:0) State:
001
010
100
110
101
111
SEC2 valid change.
SEC1 valid change.
Operating mode.
Main ref failed.
Unused.
SEC4 valid change.
Unused.
SEC3 valid change.
T4 reference failed - no valid T
lock to source (default).
T4 reference good - valid T
Free-Run (default),
Holdover,
Locked,
Pre-locked,
Pre-locked2,
Phase lost.
FINAL
Page 24
Description
IN1
input available.
IN1
OUT4
input (SEC2 or SEC1), T4 DPLL cannot
reference. The alarm once set will
ACS8509 SETS
Default Value (Bin)
DATASHEET
www.semtech.com
00000000
00000000
XXX10000
XXXXX001
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