ACS8509 Semtech Corporation, ACS8509 Datasheet - Page 20

• Manufacturer Part Number: ACS8509
• Description: Synchronous Equipment Timing Source for Sonet or SDH Network Elements
• Manufacturer: Semtech Corporation

Table 13 Register Map (cont...)
Revision 2.00/January 2006 © Semtech Corp.
ADVANCED COMMUNICATIONS
(Hex)
Addr
30
31
32
33
34
35
37
38
39
3A
3B
3C
3D
3E
3F
40
41
42
cnfg_sts_remote_
sources_ valid
(read/write)
cnfg_operating_mode
(read/write)
cnfg_ref_selection
(read/write)
cnfg_mode
(read/write)
cnfg_T4
(read/write)
cnfg_uPsel_pins
(read only)
cnfg_T0_output_enable
(read/write)
cnfg_T0_output_
frequencies
(read/write)
cnfg_differential_
outputs
(read/write)
cnfg_bandwidth
(read/write)
cnfg_nominal_frequency
(read/write)
cnfg_holdover_offset
(read/write)
cnfg_freq_limit
(read/write)
Register Name
SEC2
Auto
external
2K enable
Auto b/w
switch
Acq/lock
Auto
Holdover
Averaging
O1 Frequency selection
7 (msb)
Digital2
SEC1
Phase
alarm
timeout
enable
1=SONET
0=SDH
for Dig2
6
Acquisition bandwidth
Clock edge
Squelch
1=SONET
0=SDH
for Dig1
FINAL
Page 20
5
Digital1
DPLL Frequency offset limit (7:0)
SEC4
Holdover
Offset
enable
Select
T0/T1
O2
Nominal frequency (15:8)
Nominal frequency (7:0)
Holdover offset (15:8)
Holdover offset (7:0)
4
Data Bit
External 2K
Sync
enable
Set to 0
O1 LVDS
enable
Set to 0
3
(only valid for inputs SEC1 and SEC2)
Set to 0
Force T1 input source selection
force_select_reference_source
SEC3
SONET/
SDH
I/P
O3
19.44 MHz
O1 PECL
enable
ACS8509 SETS
2
Normal/locked bandwidth
Holdover offset (18:16)
Forced operating mode
Microprocessor type
Master/
Slave
Set to 0
DPLL Frequency offset
1
DATASHEET
www.semtech.com
limit (9:8)
Set to 0
O2
Reversion
mode
Set to 0
0 (lsb)