ST PeakSHDSL User Manual
查询STLC60444供应商
PeakSHDSL 8 CHANNEL CENTRAL OFFICE CHIPSET
DESCRIPTION
The 8-channel SHDSL chipset from S TM icroelectronics provides a complete low-power, low cost
solution for Central Office (CO) SHDSL solutions.
The chipset integrates all SHDS L functions from
Utopia interface to the line in three devices:
■ STLC80815: 8 channel SHDSL data pump
(SHDSL Transceiver)
■ STLC60444: 4 channel SHDSL Analog front
end
■ TS615: Dual wide band operational amplifier
with high output current
The product is targeted for customers looking to
build cost effective central office sol utions, i ncluding Digital Subscriber Line Access Multiplexers
(DSLAM) and Digital Loop Carriers (DLC).
PeakSHDSL
PRODUCT BRIEF
PBGA-272 package
for
STLC80815 device
EFBGA216 package
for
STLC60444 device
TSSOP14 package
for
TS615 device
CHIPSET ARCHITECTURE OVERVIEW
Figure 1. Chipset Architecture Overview
Flash ROM Host CPU SDRAM
Utopia
ATM
Octal SHDSL
PCM Highway
8
transceiver
PCM
Serial boot & management interface
Quad SHDSL
AFE
Quad SHDSL
AFE
Line driver &
hybrid
Line driver &
hybrid
Line
I/F
Line
I/F
Loop
Loop
With less than 750 mWatt per chan nel, the Pe akSHDSL chi ps et is one of the mo st com petitive s olutions
for SHDSL central office applications.
May 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
1/8
PeakSHDSL
STLC80815- 8 CHANNEL SHDSL DATA PUMP (SHDSL TRANSCEIVER)
Introduction
The STLC80815 includes eight indep endent transceive rs, which are optimized for central office application of Symmetrical Digital Subscriber Line (SHDSL) modems. The channels can operate simultaneously
in different modes and standards. It is an ideal integrated solution for central office equipment sensitive to
cost, power and space.
It includes full object code for a complete management/control and diagnostic API, and requires only power up initialization from the host interface. This allows a single low-cost host processor to supports tens of
ports via a parallel or serial interface.
A "hostless" line card can be designed using the STLC80815. In this case a remote host can boot the chip
and manage it via a serial host interface or using the in-band ATM cells.
Each channel in this highly integrated device includes the following components : frame, a PAM receiver
and transmitter, a 512 state TCM decoder and a timing synthesizer. In addition the device includes a centralized controller, which reduces to a minimum the requirements placed from the host, a Utopi a and a
PCM highway interface, which are common to all eight channels.
Figure 2. Block diagram of the STLC80815 SHDSL transceiver
Bitpump
(G.991.2
PCM x 8
PCM HW
NTR
PCM
TC
xDSL
Framer
(G.991.2
PMS-TC)
TPS-TC)
Modulator
Echo
Canceller
AFE Data
AFE
I/F
AFE Control
2/8
Utopia
ATM
TC
TC
(G.991.2
TPS-TC)
Dedicated
Risc
Controller
DSP
Controller
512 states
TCM
Decoder
modulator
Host I/F
Host Serial I/F
De-
PLL
Host Parallel I/F
17.664MHz Clk
PeakSHDSL
Main features
■ Compatibility with: ITU G.991.2 (G.SHDSL), ITU G.994.1 (G.HS) and ETSI RE/TM-06011 (SDSL),
ANSI HDSL2 and HDSL4.
■ Supports four-wire operation
■ Extremely low power consumption per channel: <700mW for all ITU G.991.2 Annex B rates, masks and
loops.
■ Outstanding reach performance: Symmetrical rate of 1552kbps over 5.5 Km (18.0kft) for an ETSI
0.4mm cable.
■ Includes 512 states TCM decoder
■ Supports symmetrical rates from 192 kbps up to 2.3 Mbit/s in step of 8kbps
■ Includes an internal, flexible frequency synthesizer
■ Supports all G.991.2 clock modes, including synchronous and plesiochronous modes.
■ Support operation with NTR, External PLL or VCXO are not required
■ Includes a fully-featured flexible framer, which supports simultaneous ATM and PCM transmis sion
■ T1/E1 and in-band ISDN services are supported
■ Serial and parallel host interface
■
In-band ATM boot and management supporte d
■ Complete software control protocol stack/API
■ Boundary scan testing compliant to IEEE 1149.1 Join Test Action Group (JTAG)
■ 272-pin TPBGA272 package (27x27m m)
■ -40 to 85°C operation
3/8
Loading...