GS3137-08F Datasheet PDF - GlobespanVirata
Part Number | GS3137-08F | |
Description | Transceiver | |
Manufacturers | GlobespanVirata | |
Logo | ||
There is a preview and GS3137-08F download ( pdf file ) link at the bottom of this page. Total 30 Pages |
Preview 1 page No Preview Available ! June 25, 2002, Issue 2
Part Numbers
G2216-208-041PF B2 (SDSL 2B1Q)
G2214-208-041DF B2 (SDSL CAP)
G2237-208-041PT B2 (SHDSL/HDSL2)
G2237-208-041PT C1 (SHDSL/HDSL2)
XDSL2TM SDSL, HDSL2, or SHDSL - ILD2
Dual-Channel, Low Power, Programmable
Transceiver with Integrated Framer and Line Drivers
Data Sheet
Overview
The GlobespanVirata® XDSL2™ Digital Subscriber Line
(DSL) chip sets provide low power, high density solutions for
2-wire DSL equipment. These chip sets are fully
programmable and field upgradeable eliminating the risk of
product obsolescence and accelerating the time-to-market for
new network services. The GlobespanVirata® XDSL2™ DSL
chip sets are fully interoperable with multi-vendor DSL chip
set solutions. This interoperability enables dynamic
interworking of multiple vendor DSL solutions with the
capability to interoperate with products that conform to ANSI
and ETSI DSL standards.
GlobespanVirata’s unique hardware platform supports
multiple dual-channel applications including SDSL, HDSL2,
and SHDSL, using population options for optimization.
The XDSL2 DSL chip sets incorporate two DSL bit pumps
plus framing into a three-chip solution comprised of a dual-
channel digital signal processor (DSP) with built-in framer and
two Analog Front Ends each with an Integrated Line Driver
(ILD2).
The XDSL2 chip sets interface directly with off-the-shelf T1/
E1 transceivers and Nx64 multiplexing, eliminating the need
for a separate DSL framer to combine and format the two DSL
channels into a standard interface. GlobespanVirata’s DSL
XDSL2 chip sets deliver two channels of full duplex
transmission up to 2320 kb/s, depending on the application.
The high density XDSL2 dual-channel DSL chip sets are ideal
for CO applications, while single-channel versions with
integrated framer are also available for CPE applications.
Features
• Dual-channel DSP with framer that fully integrates
2 separate DSL chips into a single device
• Two AFEs, each with an integrated differential line driver
• 2B1Q, CAP, or PAM line codes
• Supports dual-channel symmetric data rates of 144 kb/s
to 2320 kb/s (depending on the application)
• Supports IDSL with optional data interface rates of
64 kb/s, 128 kb/s, and 144 kb/s
• Offers physical layer interoperability with competitive solu-
tions
• Glueless interface to popular microprocessors
• Transmission compliant with ETSI TS 101 135, ITU-T
G.991.1, and ANSI TR-28 for single pair 2B1Q and CAP,
ANSI T1.418 for HDSL2 and ITU-T G.991.2 for SHDSL
• Reference design compatible with Bellcore GR-1089, IEC
60950, UL 1950, ITU-T K.20 and K.21
• Built-in framer provides easy access to EOC and indicator
bits (framing can be bypassed completely for 2-channel
independent operation)
• Interfaces directly with off-the-shelf single-channel T1/E1
transceivers
• ATM UTOPIA Level 1 and 2 interface
• A single oscillator and hybrid topology supports all speeds
• +3.3V and +5V power supplies
Customer Interface
TDATA (A/B)
TClock (A/B)
Frame Pulse (A/B)
RDATA (A/B)
Rclock (A/B)
Frame Pulse (A/B)
Dual
Channel
DSP
w/Framer
µ Processor Interface
ILD2
ILD2
Figure 1. Block Diagram of XDSL2™ DSP with Two Single-Channel ILD2s
GlobespanVirata, Inc. — Proprietary
Use pursuant to Company Instructions
DO-009643-DS, Issue 2
|
|
June 25, 2002
XDSL2TM SDSL, HDSL2, and SHDSL - ILD2 Data Sheet
Table 1 describes the example arguments to the
SetParamXCVR() routine when performing start-up.
This is only a sample subset of possible parameters,
provided to illustrate how easy it is to work with the
GlobespanVirata chip sets.
Table 1. Example SetParamXCVR() Structure
Parameter
Function
GTI_ACTION_ITEM
GTI_MODE_ITEM
GTI_POWER_SCALE_ITEM
GTI_FRAMER_TYPE_ITEM
The action GTI_STARTUP_REQ begins
start-up, which, upon successful
completion, results in the transceiver
changing into DATA mode.
Mode describes which transceiver the
Host is talking to, the CO or CP.
Allows the transmit power to be set in
small increments.
The framing modes are interface specific.
Possible arguments for framing modes,
depending on the customer interface,
include: No Framing, UTOPIA Level 1,
UTOPIA Level 2, T1, E1, and nxDS0
(with the ability to choose continuous
DS0 blocks).
Checking the Transceiver Status
[SStatusXCVR()]
The SStatusXCVR() routine can be executed when in
DATA mode, utilizing minimal processing power. To
further illustrate the ease of programming
GlobespanVirata chip sets, Table 2 supplies a few
examples of SStatusXCVR().
Table 2. Example SStatusXCVR() Parameters
Parameter
Function
GTI_XMIT_POWER
GTI_START_PROGRESS
GTI_BERT_ERROR
GTI_RECEIVER_GAIN
This action returns the transmitted power.
The current detailed start-up state of the
transceiver is returned.
The number of bit errors detected during
the 511 BERT test is returned.
Total receiver gain setting can be calcu-
lated using the return values from this
action.
DO-009643-DS, Issue 2
GlobespanVirata, Inc. — Proprietary
Use pursuant to Company Instructions
5
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Information | Total 30 Pages | |
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