Zarlink (Zarlink Semiconductor ) : MT90528

28-Port Primary Rate Circuit Emulation AAL1 SAR

The MT90528 28-Port Primary Rate Circuit Emulation AAL1 SAR allows primary rate TDM circuits to be carried over ATM networks using Circuit Emulation Services. Up to 896 bi-directional ATM VC connections can be simultaneously processed by the MT90528 CES AAL1 SAR device.

• AAL1 Segmentation and Reassembly device compliant with Circuit Emulation Services (CES) standard (af-vtoa-0078.000)
• Supports both Unstructured and Structured Circuit Emulation of 28 independent DS1/E1/STBUS interfaces
• Supports AAL1 trunking, with up to 128 TDM channels per VC (af-vtoa-0089.001)
• Supports CAS transmission and reception in all structured modes of operation
• Supports simultaneous processing of up to 896 bidirectional Virtual Circuits
• Supports mixed DS1/E1 operation
• Supports mixed Unstructured and Structured CES operation
• Fully flexible DS0 assignment
• Complete clock recovery solution provided onchip: Synchronous, Adaptive, or Synchronous Residual Time Stamp (SRTS) via 28 independent PLLs
• Dual-mode (ATM-end or PHY-end) UTOPIA port operates in Level 1 or Level 2 mode for connection to external PHY or ATM devices with UTOPIA clock rate up to 52 MHz

Technology:	CMOS
Package:	PBGA 456 Pin