STC3800 Datasheet, PDF (38/48 Pages) Connor-Winfield Corporation – INTEGRATED - STRATUM 3E TIMING SOURCE

Application Notes continued
Hold Over History and Status States
Figure 12
Reference Switch
Reset
Acquire Reference
Hold Complete = 0
Hold Avail = 0
Flush
Reference Switch
Reference lock
Build History
Hold Complete = 0
Hold Avail = 0
Flush
History bulid complete
Flush
Reference Lock
(with “Continue” set)
Locked, history
complete
Hold Complete = 1
Hold Avail = 1
Reference switch
Reference Switch
Reference Switch
History restored from backup,
re-start the building procedure
Acquire Reference
Hold Complete = 0
Hold Avail = 1
Reference Lock
(with “Rebuild” set)
Build History
Hold Complete = 0
Hold Avail = 1
History Build Complete,
replace active holdover history
Preliminary Data Sheet #: TM061 Page 38 of 48 Rev: P06 Date: 11/22/04
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice