ACS8509 Semtech Corporation, ACS8509 Datasheet - Page 28

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

Table 14 Register Description (cont...)
Revision 2.00/January 2006 © Semtech Corp.
ADVANCED COMMUNICATIONS
30
31
32
33
Addr.
(Hex)
cnfg_sts_remote_
sources_ valid
cnfg_operating_mode
cnfg_ref_selection
Register Name
This register holds the status of the reference sources supplied to the other device in
a master/slave configuration. It is a copy of the other device's sts_sources_valid
register. The register is part of the protection mechanism.
Bits (7:6) Reference sources SEC2:SEC1,
Bits (5:0) Unused, set to 0.
Bits (7:5) Unused.
Bits 4
Bit 3
Bit 2
Bits (1:0) Unused, set to 0.
This register is used to force the device into a desired operating state, represented by
the binary values shown in Figure 10. Value 0 (hex) allows the control state machine
to operate automatically.
Bits (7:3) Unused.
Bits (2:0) Desired operating state (as per Figure 10).
This register is used to force the device to select a particular input reference source,
irrespective of its priority. Writing to this register temporarily raises the selected input
to priority “1”. Provided no other input is already programmed with priority “1”, and
revertive mode is on, this source will be selected.
Bits (7:4) Unused.
Bits (3:0) 0110 SEC1,
Reference sources SEC4.
Unused, set to 0.
Reference sources SEC3
1010 SEC3,
0111 SEC2,
1100 SEC4.
FINAL
Page 28
Description
ACS8509 SETS
Default Value (Bin)
DATASHEET
www.semtech.com
11111111
XX111111
XXXX1111
XXXXX000