MT9046 Zarlink Semiconductor, MT9046 Datasheet - Page 17

• Manufacturer Part Number: MT9046
• Description: T1/E1 System Synchronizer with Holdover
• Manufacturer: Zarlink Semiconductor

MT9046 and Network Specifications
The MT9046 fully meets all applicable PLL requirements (intrinsic jitter/wander, jitter/wander tolerance,
jitter/wander transfer, frequency accuracy, frequency holdover accuracy, capture range, phase change slope and
MTIE during reference rearrangement) for the following specifications.
1. Bellcore GR-1244-CORE June 1995 for Stratum 4 Enhanced and Stratum 4
2. AT&T TR62411 (DS1) December 1990 for Stratum 4 Enhanced and Stratum 4
3. ANSI T1.101 (DS1) February 1994 for Stratum 4 Enhanced and Stratum 4
4. ETSI 300 011 (E1) April 1992 for Single Access and Multi Access
5. TBR 4 November 1995
6. TBR 12 December 1993
7. TBR 13 January 1996
8. ITU-T I.431 March 1993
NOTES:
(XXX)
{A}
Movement to Normal State from any
state requires a valid input signal
MS2 MS1 RSEL
Invalid Reference Signal
Primary
Normal
(000)
S1
(PCCi=0)
(PCCi=1)
{A}
Auto-Holdover
Holdover
Primary
Primary
(000)
(010)
S1A
S1H
Figure 7 - Control State Diagram
Phase Re-Alignment
Phase Continuity Maintained (without TIE Corrector Circuit)
Phase Continuity Maintained (with TIE Corrector Circuit)
Zarlink Semiconductor Inc.
MT9046
Freerun
17
(10X)
S0
Auto-Holdover
Secondary
Secondary
Holdover
(001)
(011)
S2A
S2H
{A}
Secondary
Normal
(001)
S2
Data Sheet