The AD20msp930 is designed to meet current ANSI T1.413 Issue
2, ETSI TR328 and ITU G.992.1 and G.992.2 industry standards. Full functionality
in this three-chip set includes an integrated DSP/interface/framer,
analog front-end, driver/receiver, and object
code software for user adaptability and control. Based on the industry
standard AD20msp918, the AD20msp930 improves and simplifies next-generation
designs and reduces equipment manufacturing costs.
Features
Flexible bin assignment: supports ADSL over ISDN (per ETSI TM6
& ITU G.992.1 Annex B), enhanced upstream or symmetric data rates
ATM (UTOPIA 1 or 2) or STM interfaces
Complete software control protocol stack/API
Complete data pump in three compact ICs (225 BGA DSP/interface
and analog front end-80 pqfp, 20 PSOP/24 SOIC) line driver
Standards compliant: supports ANSI T1.413 Issue 1 and 2, ETSI
TR328, ITU G.992.1 and G.992.2 (G.lite)
Implements DMT (discrete multitone) technology as adopted by
ANSI, ETSI and ITU
Normal or reduced overhead framing modes
Supports configurable data rates: 6.1 Mbps simplex, 224 kbps
duplex over carrier serving area loop; optimum Internet access at 4.5 Mbps
downstream/450 kbps upstream; absolute maximum 12 Mbps/1 Mbps
Category 2 functionality: Trellis code and echo cancellation
- digital EC path (in AD6649) and second DAC (in AD6440)enables an analog
echo-cancellation signal to be generated