MT9045 Zarlink Semiconductor, MT9045 Datasheet - Page 15

• Manufacturer Part Number: MT9045
• Description: T1/E1/OC3 System Synchronizer
• Manufacturer: Zarlink Semiconductor

Legend:
-
/
MTIE
Refer to Control State Diagram for state changes to and from Auto-Holdover State
MS2
NOTES:
(XXX)
{A}
Movement to Normal State from any
state requires a valid input signal
0
0
0
0
0
1
State change occurs with TIE Corrector Circuit
No Change
Not Valid
MS2 MS1 RSEL
Invalid Reference Signal
MS1
Input Controls
0
0
0
1
1
0
Description
Primary
Normal
(000)
S1
(PCCi=0)
(PCCi=1)
RSEL
X
0
0
1
0
1
{A}
PCCi
X
X
X
X
0
1
Auto-Holdover
Holdover
Primary
Primary
(000)
(010)
S1H
S1A
Figure 7 - Control State Diagram
Table 4 - Control State Table
Freerun
Phase Re-Alignment
Phase Continuity Maintained (without TIE Corrector Circuit)
Phase Continuity Maintained (with TIE Corrector Circuit)
S0
S1
S1
S2
Zarlink Semiconductor Inc.
-
/
/
MT9045
Freerun
15
(10X)
S2 MTIE
S0
Normal
(PRI)
S1H
S2H
S1
S0
-
-
Auto-Holdover
Secondary
Secondary
Holdover
S1 MTIE
S1 MTIE
Normal
(SEC)
(001)
(011)
S2A
S2H
S2H
S2
S0
State
-
/
{A}
Holdover
S1 MTIE
S2 MTIE
(PRI)
S1H
S1
S0
-
/
Secondary
Normal
(001)
S2
Data Sheet
Holdover
S1 MTIE
S1 MTIE
S2 MTIE
(SEC)
S2H
S0
/
-