ZL30102 Datasheet, PDF (1/50 Pages) Zarlink Semiconductor Inc – T1/E1 Stratum 4/4E Redundant System Clock Synchronizer for DS1/E1 and H.110

ZL30102
T1/E1 Stratum 4/4E Redundant System
Clock Synchronizer for DS1/E1 and H.110
Data Sheet
Features
• Synchronizes to clock-and-sync-pair to maintain
minimal phase skew between an H.110 primary
master clock and a secondary master clock
• Supports Telcordia GR-1244-CORE Stratum 4 and
4E
• Supports ITU-T G.823 and G.824 for 2048 kbit/s
and 1544 kbit/s interfaces
• Supports ANSI T1.403 and ETSI ETS 300 011 for
ISDN primary rate interfaces
• Simple hardware control interface
• Manual and Automatic hitless reference switching
• Accepts three input references and synchronizes
to any combination of 8 kHz, 1.544 MHz,
2.048 MHz, 8.192 MHz or 16.384 MHz inputs
• Provides a range of clock outputs: 1.544 MHz,
2.048 MHz, 3.088 MHz, 6.312 MHz, 16.384 MHz
and either 4.096 MHz and 8.192 MHz or
32.768 MHz and 65.536 MHz
• Provides 5 styles of 8 kHz framing pulses
• Holdover frequency accuracy of 1x10^-7
• Provides Lock, Holdover and selectable Out of
Range indication
October 2004
Ordering Information
ZL30102QDG 64 pin TQFP
-40°C to +85°C
• Attenuates wander from 1.8 Hz
• Less than 0.6 ns_pp intrinsic jitter on all output
clocks
• External master clock source: Clock Oscillator or
Crystal
Applications
• Synchronization and timing control for multi-trunk
DS1/ E1 terminal systems such as DSLAMs,
Gateways and PBXs
• Clock and frame pulse source for H.110 CT Bus,
ST-BUS, GCI and other time division multiplex
(TDM) buses
REF0
REF1
REF2
REF2_SYNC
REF_FAIL0
REF_FAIL1
REF_FAIL2
OOR_SEL
REF_SEL1:0
RST
OSCi OSCo TIE_CLR
FASTLOCK LOCK OUT_SEL
Master Clock
MUX
TIE
Corrector
Circuit
Virtual
Reference
DPLL
E1
Synthesizer
Reference
Monitor
TIE
Corrector
Enable
State Machine
Mode
Control
Frequency
Select
MUX
DS1
Synthesizer
DS2
Synthesizer
IEEE
1149.1a
C2o
C4/C65o
C8/C32o
C16o
F4/F65o
F8/F32o
F16o
C1.5o
C3o
C6o
TRST
MODE_SEL1S:E0C_MSTR
HMS HOLDOVER
TCK TDI TMS TDO
Figure 1 - Functional Block Diagram
1
Zarlink Semiconductor Inc.
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Copyright 2004, Zarlink Semiconductor Inc. All Rights Reserved.