zl50011 Zarlink Semiconductor, zl50011 Datasheet - Page 2

• Manufacturer Part Number: zl50011
• Description: Flexible 512 Channel Dx With On-chip Dpll
• Manufacturer: Zarlink Semiconductor

Applications
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Description
The device has 16 ST-BUS inputs (STi0-15) and 16 ST-BUS outputs (STo0-15). It is a non-blocking digital switch
with 512 64 kbps channels and performs rate conversion between the ST-BUS inputs and ST-BUS outputs. The
ST-BUS inputs accept serial input data streams with the data rate of 2.048 Mbps, 4.096 Mbps or 8.192 Mbps on a
per-stream basis. The ST-BUS outputs deliver serial output data streams with the data rate of 2.048 Mbps,
4.096 Mbps or 8.192 Mbps on a per-stream basis. The device also provides 16 high impedance control outputs
(STOHZ 0-15) to support the use of external high impedance control buffers.
The ZL50011 has features that are programmable on a per-stream or per-channel basis including message mode,
input bit delay, output bit advancement, constant throughput delay and high impedance output control.
The on-chip DPLL meets Telcordia GR-1244-CORE stratum 4 specifications (Stratum 4). It accepts a dedicated
timing reference input at either 8 kHz, 1.544 MHz or 2.048 MHz. Alternatively, the reference can be replaced by an
internal 8 kHz signal derived from the ST-BUS input frame boundary. The DPLL provides reference monitor, jitter
attenuation and free run functions. It can be used as a system’s ST-BUS timing source which is synchronized to the
network. The DPLL can also be bypassed so that the device operates under system timing.
Small and medium digital switching platforms
Access Servers
Time Division Multiplexers
Computer Telephony Integration
Digital Loop Carriers
Zarlink Semiconductor Inc.
ZL50011
2
Data Sheet