S5N8944B Datasheet, PDF (5/21 Pages) Samsung semiconductor – G.Lite ADSL Transceiver for CO and CPE

S5N8944B
G.Lite ADSL Transceiver for CO and CPE
1. Features
• Full Compliance with ITU-T G.Lite and G.hs
• FDM based DMT Line Coding
• Data Rate: Up to 3.5 Mbps for Downstream and 600 kbps for Upstream.
• Reach: 5.4 km (18 kft) on 24 AWG and 4 km (13.5kft) on 26 AWG
• Rate Adaptive Modem (steps of 32kbps)
• Reed-Solomon Forward Error Correction with Interleaver
• Frequency and Time Domain Equalizer
• Support Fast Retraining Function
• Support Network Management Function
• Support Power Management Function
• Host Interface (Intel/Motorola) and ATM(UTOPIA-2)/non-ATM Interface
• 0.25µm, 2.5V CMOS Technology
• Operating Temperature: -40 °C to 85 °C
• Package Type: 160-QFP
2. General Description
The S5N8944B is a complete ATM-based rate adaptive G.Lite ADSL modem solution with
associated F/W and an Analog Front-End (S5N8943). The S5N8944B provides all the digital
functions such as ATM TC, FEC codec with interleaver/de-interleaver, adaptive QAM codec,
FFT/IFFT, equalizers, digital filters and so on.
There are four interfaces for external communications; UTOPIA-2 interface for direct connection
to ATM systems, serial interface for non-ATM applications, 16-bit ADC/DAC interface, and host
interface for general CPUs like Intel or Motorola.
The same chipset can be used at both sides of the link, Central Office and Customer Premises
Equipment. The S5N8944B uses 17.664MHz Xtal oscillator as a master clock for CO side and
17.664MHz VCXO for CPE.
ATM
or
Non-ATM
S5N8944
Digital
Interface
DMT
Processor
S5N8943
Analog
Front-
End
Hybrid
Line
Driver
Phone
Line
Host
DSP
ROM
ROM
Figure 1: General Block Diagram
CONFIDENTIAL
5
Preliminary Information (Rev.2.1 )