Advance Information
MT9044
Description
State
Normal
(PRI)
Normal
(SEC)
Holdover
(PRI)
Holdover
(SEC)
Input Controls
Freerun
S0
MS2
MS1
RSEL
GTi
S1
S2
S1H
S2H
0
0
0
0
0
1
0
0
0
1
1
0
0
0
1
0
1
X
0
1
S1
S1
S2
/
-
-
S1 MTIE
S1
S1 MTIE
S1 MTIE
S1 MTIE
S1 MTIE
X
X
X
X
S2 MTIE
S1H
S2H
S0
-
/
S2 MTIE
S2 MTIE
-
/
/
-
/
S2H
S0
-
S0
S0
Legend:
-
No Change
Not Valid
/
MTIE
State change occurs with TIE Corrector Circuit
Refer to Manual Control State Diagram for state changes to and from Auto-Holdover State
Table 4 - Manual Control State Table
S0
Freerun
(10X)
S1
S1A
Auto-Holdover
Primary
S2A
Auto-Holdover
Secondary
(001)
S2
Normal
Secondary
(001)
{A}
{A}
Normal
Primary
(000)
(000)
(GTi=0)
(GTi=1)
S1H
Holdover
Primary
(010)
S2H
Holdover
Secondary
(011)
NOTES:
(XXX)
{A}
MS2 MS1 RSEL
Invalid Reference Signal
Phase Re-Alignment
Phase Continuity Maintained (without TIE Corrector Circuit)
Phase Continuity Maintained (with TIE Corrector Circuit)
Movement to Normal State from any
state requires a valid input signal
Figure 7 - Manual Control State Diagram
11
MITEL [ MITEL NETWORKS CORPORATION ]
