GENERAL DESCRIPTION
The CopperWing12 ADSL Chipset family targets a complete set of solution for Central Office (CO) ADSL technology integrating also processing and management capability to provide the best solution for ATM/IP DSLAM, ATM/IP mini DSLAM and "Pizza" boxes. The chipset integrates all ADSL/ ADSL2+ functions from ATM/IP interfaces to the line in three devices:

■ Two data pump chip options:
   – STLC61255: 12 channels ATM ADSL Data Pump
   – STLC61256: 12 Channels ATM/IP ADSL data Pump with embedded Cell Processor
■ STLC60454: 4 Ch ADSL/ADSL2+ AFE with integrated receiver and LP filters
■ STLC60243: Dual channel Line Driver

ADSL SUPPORTED STANDARDS
■ T1.413 Issue 2
■ ETSI RTS/TM 06006 - ADSL over ISDN
■ ITU G.992.1 - G.dmt, Annexes A, B, C, I
   – Amendment to G.992.1 Annex C
■ ITU G.994.1 - G.hs rev 2.
■ ITU G.992.2 - G.lite, Annexes A, B, C.
■ G.992.3 - G.dmt.bis, Annex A, B, C, I, J, L, M
■ G.992.4 - G.lite.bis
■ G.992.5 - G.adslplus, Annex A, B, C, I, J, M
■ RE-ADSL
■ Metallic loop testing

PERFLOW ATM/IP CELL PROCESSOR FEATURES
■ Network processing functionality on the line card
   – First stage switching
■ Cell and Packet processing
   – -AAL5 and AAL2 SAR functions on chip
   – ATM line card switch
   – Serial ATM
   – PTM-TC (Packet Over HDLC)
   – Traffic Management and Policing
■ Configurable backplane interfaces
   – Utopia Level 2&3, PoS, RMII, SMII, Serial ATM, STM