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ST20190 の電気的特性と機能

ST20190のメーカーはST Microelectronicsです、この部品の機能は「ADSL2 and ADSL+ Modem Chipset for CPE Applications with Utopia II Interface」です。


製品の詳細 ( Datasheet PDF )

部品番号 ST20190
部品説明 ADSL2 and ADSL+ Modem Chipset for CPE Applications with Utopia II Interface
メーカ ST Microelectronics
ロゴ ST Microelectronics ロゴ 




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ST20190 Datasheet, ST20190 PDF,ピン配置, 機能
ST20190www.DataSheet4U.com
ADSL, ADSL2 and ADSL+
Modem Chipset for CPE Applications with Utopia II Interface
DATA BRIEF
1 APPLICATIONS
Low end and high end ADSL Bridge and Router
solutions
ADSL Modems / routers for residential and
SOHO broadband access to www and
corporate VPNs
Integrated Access Devices offering VoDSL or
VoIP applications
Home gateway solutions
2 FEATURES
High Integration
– 2 chips, Line to ATM
– Direct ATM Interface
– Line Driver integrated
– Highly reduced bill of material cost
Support for multiple ADSL standards:
– ANSI T1.413 Issue2
– ITU G.992.1 (G.dmt)
– Annex A, Annex B, Annex C
– ITU G.992.2 (G.Lite)
– ITU G.992.3 (ADSL2)
– Annex A, B, C, I, J and L
– ITU G.992.4 (G.Lite bis)
– ITU G.992.5 (ADSL2+)
– Annex A, B, C, I, J and L
– Support of ReachDSLTM with digital com-
panion chip
Cat II functionality: Trellis coding and echo
cancellation
Dual latency support: fast + interleaved
Small footprint packages allow high density
board designs
Embedded controller with cache for powerful
and flexible on chip control of the modem
operation
Figure 1. Package
TQFP100
Table 1. Order Codes
Part Number
ST20184
ST20196
LBGA208
Package
TQFP100
LBGA208
Complete modem package
– No dependency on external processor and
easy,straight forward integration with external
network processors
– Full reference design kit for modem manufac-
turers, including schematics, layout, BoM,
HW design guide, firmware
Highest Performance
– Fully rate-adaptive
– ADSL mode > 12 Mbps in Downstream and >
1 Mbps in Upstream
– ADSL+ mode > 20 Mbps in Downstream and
> 2 Mbps in Upstream when using 64 tones
(annex L)
3 OVERALL DESCRIPTION
The ST20190 is a new generation ADSL chipset
from STMicroelectronics. It is highly integrated
and has the flexibility to offer all standards, all an-
nexes while being fully optimised for CPE applica-
tions. It provides all the required functions to
implement a complete Utopia rate adaptive DMT
ADSL modem. It consists of the optimised ADSL
Analogue Front-End chip ST20184 and the digital
chip ST20196 which includes a DMT/ATM mo-
dem, and a dedicated ADSL Transceiver Control-
ler with associated Firmware.
As shown in Fig.2, the chipset interfaces have
been defined to allow direct integration into sys-
tems design, reducing both time-to-market and im-
June 2004
REV. 1
1/7
This is preliminary information on a new product now in development. Details are subject to change without notice.

1 Page





ST20190 pdf, ピン配列
Figure 3. Block Diagram of ST20184
ST20190
www.DataSheet4U.com
Hybrid
switches
2.5V Regulator
+
POR
Dying Gasp
Tuning Circuit I/V Reference
VCXO
(optional)
CTRL/TST
Interface
RXP3
RXP1
LNA1ab
RXN1
RXP2
RXN2 LNA1c
RXN3
Loopback
Bypass
RX HPF
Bypass
LNA2
TXP
TXN
TXLD
TX LPF
DAC
RX LPF
ADC
5V area
Digital
D
I
G
I
T
A
L
5.2 ST20196
5.2.1 Discrete Multi Tone (DMT) Modulation and Demodulation
The ST20196 includes a digital Quadrature Amplitude Modulation (QAM) mapper/demapper which allows
coding of up to 15 bits per tone. The device incorporates the necessary Inverse- and Fast Fourier Trans-
form (IFFT, FFT), an innovative unique Per Tone Equalizer (PTEQ), echo cancelling (EC), Trellis coding
and decoding plus timing units and a fully digital clock recovery scheme (TDI). These last blocks feature
efficient synchronization algorithms to improve the efficiency of the recovery of data. The ST20196 per-
formances rely on embedded programmable cores.
In ADSL2 mode the modem supports diagnostics modes, enhanced power management modes to reduce
the CO power (L2), 1 bit constellation, relocatable and modulated pilot.
5.2.2 Framing Functions
The ST20196 incorporates framing functions for the generic and ATM Transmission Convergence (TC)
layers. The new TC layer architecture is fully under the control of an embedded controller. This provides
the flexibility to adapt to different framing variants via firmware. The TC consists of data scrambling and
Reed-Solomon error correction with and without inter-leaving. It also includes the rate converter function-
ality as defined in G.dmt Annex C. Several framing variants are implemented (such as interleaved and
non-interleaved modes, full and reduced overhead) to ensure compliance with ANSI T1.413 Issue 2 and
ITU G.992.1 (G.dmt), G.992.2 (G.Lite), G.992.3 and G.992.4.
3/7


3Pages


ST20190 電子部品, 半導体
ST20190
7 DEVELOPMENT SUPPORT FOR THE ST20190
www.DataSheet4U.com
Great care has been taken in defining the ST20190 to ease its integration into system designs. In partic-
ular, this is achieved:
– At hardware level: by using one standard interface (ATM Utopia) both for data transfer and for control
– At firmware level: by clearly separating the modem firmware, run on the embedded Transceiver Con-
troller from other systems related and application-specific functions.
The boundary between the two domains is provided by means of a simple modem control protocol (CTRL-
E). This "packaged modem" approach provides a self-contained ADSL modem solution, allowing system
manufacturers to concentrate on system issues. The ST20190 comes in a package with full firmware,
schematics, Bill of Materials and layout information for the ADSL modem part. It is further supported by a
full development environment comprising:
– Evaluation boards
– PC firmware driver for CTRLE
– DeTONEator S/W for CTRLE to a PC
– ADSL test and control FW running on PC
Table 2. Revision History
Date
Revision
June 2004
1
Description of Changes
First Issue in EDOCS dms.
6/7

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共有リンク

Link :


部品番号部品説明メーカ
ST20190

ADSL2 and ADSL+ Modem Chipset for CPE Applications with Utopia II Interface

ST Microelectronics
ST Microelectronics
ST20190

ADSL ADSL2 and ADSL Modem Chipset

STMicroelectronics
STMicroelectronics
ST20196

Utopia ADSL2+ Solution for CPE

ST Microelectronics
ST Microelectronics


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