MT9042CP 데이터 시트보기 (PDF) - Mitel Networks
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MT9042CP Datasheet PDF : 28 Pages
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MT9042C
Advance Information
Description
State
Input Controls
Freerun
Normal
(PRI)
Normal
(SEC)
Holdover
(PRI)
LOS2 LOS1 GTi RST
S0
S1
S2
S1H
1
1
X 0 to 1
-
S0
S0
S0
X
0
0
1
S1
-
S1 MTIE
S1
X
0
1
1
S1
-
S1 MTIE
S1 MTIE
0
1
0
1
S1
S1H
-
-
0
1
1
1
S2
S2 MTIE
-
S2 MTIE
1
1
X
1
-
S1H
S2H
-
Legend:
-
No Change
MTIE State change occurs with TIE Corrector Circuit
Refer to Automatic Control State Diagram for state changes to and from Auto-Holdover State
Table 5 - Automatic Control (MS1=MS2=1, RSEL=0) State Table
Holdover
(SEC)
S2H
S0
S1 MTIE
S1 MTIE
S2 MTIE
S2 MTIE
-
Reset
(11X) RST=1
(X0X)
(11X)
S0
Freerun
(01X)
(X0X)
S1
Normal
Primary
(X0X)
(X0X)
S1A
{A}
Auto-Holdover
Primary
(01X)
(01X)
S2A
Auto-Holdover
{A}
Secondary
(01X)
S2
Normal
Secondary
(X01)
(X00)
(010 or 11X)
S1H
Holdover
Primary
(X0X)
(011)
(X0X)
(011)
S2H
Holdover
Secondary
(11X)
(010 or 11X)
NOTES:
(XXX) LOS2 LOS1 GTi
{A}
Invalid Reference Signal
Movement to Normal State from any
state requires a valid input signal
(11X)
Phase Re-Alignment
Phase Continuity Maintained (without TIE Corrector Circuit)
Phase Continuity Maintained (with TIE Corrector Circuit)
Figure 8 - Automatic Control State Diagram
10
(01X)
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