STLC61256 Datasheet, PDF (1/8 Pages) STMicroelectronics – ADSL Central Office (CO) Chipset: STLC61256/55 + STLC60454 + STLC60243

CopperWing12
ADSL Central Office (CO) Chipset:
STLC61256/55 + STLC60454 + STLC60243
DATA BRIEF
1 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 solu-
tion 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
CopperWing12 chipset family provides Ethernet
and ATM interfaces to fit IP and ATM based Re-
mote Unit or CO line cards; it provides also a gen-
eral purpose controller to allow the development of
controller-less line cards.
The Modem Control Software runs entirely on the
DMT Transceiver (no external memory needed for
Interleave memory nor modem SW): the line card
host controller is in charge only of high-level man-
agement operation. The chipset is able to support
not only the current ADSL standards, but also
ADSL2 and ADSL+ (12 channels).
With only 1 square inches and less than 1 Watt per
channel (in ADSL mode, 1.15W/line in ADSL+
mode), the Copperwing12 chipset is one of the
most competitive solutions for CO ADSL applica-
tion. The chip set supports also ADSL+ mode to
deliver higher bit rate (24Mb/s) on short loops
while with Reach Extended ADSL is able to guar-
antee high reach performance.
Figure 1. Chipset Architecture Overview
Flash ROM
Host CPU
SDRAM
ATM/ Utopia
POS ^In-Band
STM/
Serial
RMII/
STLC61256
Twelve
ADSL
Transceiver
with
SMII/
PerFlow
ATM
Serial Host interface
STLC60454
Quad AFE
STLC60454
Quad AFE
STLC60454
Quad AFE
STLC60243
Dual Line Driver
STLC60243
Dual Line Driver
June 2004
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
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