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STMicroelectronics Electronic Components Datasheet

MTC20138 Datasheet

(MTC20138 / MTC20174) PCI/USB ADSL CHIPSET

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ST20138
Unicorn II
PCI/USB ADSL CHIPSET: ST70138 + MTC20174
FOR ULTRA LOW COST ADSL MODEM
DATA BRIEF
1 DESCRIPTION
The Unicorn II chipset is designed to simplify the
development of low-cost ADSL CPE modems for
Windows, Mac and Linux based environments and
enables manufacturers to achieve a very compet-
itive production cost. Due to its controller-less ar-
chitecture and particularly the advantage that it
does not require an external SDRAM in its E-BOM,
the total cost of the external components needed
in the modem is the best in its class. With a low
component count of less then 140 external compo-
nents and small form factor packages, the Unicorn
II easily fits on a standard 2 layer single sided PCB
The Unicorn II chipset consists of the digital
ST70138 chip and the MTC20174 analog front
end.
The ST70138 is supplied in two packages,
TQFP144 and LBGA80. The ST70138T packaged
in TQ144 is a pin-to-pin compatible version of the
ST70137 enabling manufacturers to benefit direct-
ly from the cost and performance advantages that
the ST70138 brings.
The TQ144 flavor brings out both the USB and PCI
interfaces. Supplied in a compact USB-only
LBGA80 package, the ST70138B brings addition-
al cost advantages to new designs.
with small dimensions which contributes signifi- The MTC20174 Analog Front End (AFE) with inte-
cantly to further lowering overall system costs. To- grated line driver is designed for DMT based
gether with its low power consumption, high- ADSL CPE modems compliant with ANSI T1.413
speed performance up to 8 Mbps and customiz- issue 2, ITU G.992.1 (G.dmt) and ITU G.992.2
able complete software driver packages, the Uni- (G.lite), for Annex A, B and C.
corn II is the ideal choice for USB and PCI based
ADSL modems.
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DataShee
Figure 1. Chipset Architecture Overview
ST70138
DMT/ATM
MTC20174
AFE
Line Interface
USB PCI
PC/Mac
EEPROM
(0-16KB)
Optional
Phone Line
DataSheet4U.com
September 2004
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
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Rev. 1
1/6


STMicroelectronics Electronic Components Datasheet

MTC20138 Datasheet

(MTC20138 / MTC20174) PCI/USB ADSL CHIPSET

No Preview Available !

www.DataSheet4U.com
ST20138 - Unicorn II
2 STANDARDS COMPLIANCE AND INTEROPERABILITY
Eleven years of experience have enabled ST to develop a chipset that offers full compatibility with all cur-
rent full-rate and G.lite ADSL standards, USB standards including plug-and-play support. The Unicorn II
chipset has a comprehensive driver suite that supports Windows, Mac and Linux. The Unicorn is fully in-
teroperable with all major DSLAMs and is compliant to TR-048 (DSLforum) and ETSI 101 388 perfor-
mance requirements.
2.1 Protocols Supported
RFC 2684 bridged (LLC/SNAP and VCMUX)
- replacing RFC 1483
RFC 2684 routed (LLC/SNAP and VCMUX)
- replacing RFC 1483
RFC 2364 PPP over ATM
(LLC and VCMUX)
RFC 2516 PPP over Ethernet
(LLC and VCMUX)
RFC 2225 Classical IP over ATM
2.2 ATM and ATM adaptation support
VPI range: 0 - 255
VCI range: 32 - 65535.
UNI 3.0, 3.1, 4.0 signaling
TR37 (auto-configuration)
UBR, CBR (with customizable parameters)
et4U.com AAL0, AAL5
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DataShee
3 SOFTWARE SUITE
Unicorn shipping package includes a complete set of field proven software drivers and tools for Windows,
Mac and Linux, including PC software for modem control and communications protocols. The software
drivers are fully configurable and include diagnostic tools which are specifically developed to minimize op-
erator helpdesk interference.
3.1 Software interface
NDIS WAN or NDIS5-ATM PCI driver and USB driver
MAC / Linux OS: Open Transport driver
3.2 OS support
Win98, Win98SE, WinME, Win2K, WinXP
MAC OS 8.6 till 10.3.x
Up to Linux kernel 2.6.x
3.3 Hardware interfaces
USB connector or PCI interface
RJ11 connector
3.4 Maximum supported speed
8Mbps downstream
1Mbps upstream
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Part Number MTC20138
Description (MTC20138 / MTC20174) PCI/USB ADSL CHIPSET
Maker ST Microelectronics
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MTC20138 Datasheet PDF






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