MSAN-209
IMA over G.SHDSL
Interfacing ZL30228 to Metalink鈥檚 MTS870
Application Note
Issue 1
October 2002
1.0
Introduction
Traditionally, IMA (Inverse Multiplexing for ATM) is widely adopted in E1/DS1 applications. With emerging G.SHDSL
(Single-pair High rate Digital Subscribe Line) standard, it is now viable to apply IMA over SHDSL lines.
This application note provides a solution of IMA over up to 16 G.SHDSL lines. It serves as a reference design of
interfacing ZL30228 to Metalink's MTS870 chipset.
ZL30228 is the second-generation IMA device from Zarlink, which supports IMA over 16 serial bit streams running
at a maximum of 2.5Mbps. It also incorporates UTOPIA Level 2 (and Level 1) bus as ATM interface.
The MTS870 chipset contains 8 channels DSL framers that support multiple modes of Symmetrical DSL like ITU
G.SHDSL, the ETSI SDSL, and the ANSI HDSL2
ZL30228 together with MTS870 and Metalink's AFE chipsets together provide a complete solution for IMA over
G.SHDSL that meets both IMA version 1.1/1.0 specification and G.SHDSL specification.
2.0
Notification
This reference design is showing how to connect ZL30228 to MTS870 chipset. In the schematic that follows,
ZL30228 is shown with full pinout and surrounding circuitry. Only the data interface pins on MTS870 chipset are
presented to illustrate the interconnection. For detailed reference design of MTS870 chipset please contact
Metalink.
The ZL30228 device shown in this reference design can be replaced by ZL30227 (Octal) or ZL30226 (Quad), two
IMA devices from the same family. Both ZL30227 and ZL30226 are pin and functional compatible to ZL30228.
3.0
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Schematics Content
The top-level diagram is represented on the first page.
Second and third pages contain the detailed schematics of ZL30228.
Data interface of MTS870 is shown on the fourth page.
Zarlink products and associated documents marked "Eng" ("ENGineering Samples") are or relate to products in development and not released to production. All
ENGineering Samples are supplied only for testing and on the express understanding that (i) they have not been fully tested or characterized under intended modes
of operation and may contain defects; (ii) Zarlink makes no representation or warranty regarding them; and (iii) Zarlink disclaims any liability for claims, demands and
damages, including without limitation special, indirect and consequential damages, resulting from any loss arising out of the application, use or performance of them.
ENGineering Samples may be changed or discontinued by Zarlink at any time without notice.
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