AccessRunner ADSL-USB Modem Device Set Data Sheet
1.3
Features
• Complete ADSL-USB solution
• Compliant with ADSL standards
− Full-rate ANSI T1.413 Issue 2 and ITU G.dmt (G.992.1) standards
− Splitterless ITU G.lite (G.992.2) specification
• DMT modulation and demodulation
• Full-rate adaptive modem
− Maximum downstream rate of 8 Mbps
− Maximum upstream rate of 1 Mbps
• Supports splitterless ADSL implementation
• WAN mode support: PPP over ATM (RFC 2364)
• LAN mode support: bridged Ethernet over ATM (RFC 1483)
• Tone detection for low power mode
• USB host interface
− Compliant with USB Specification, Revision 1.1
− USB full speed (12 Mbps)
− Suspend/Resume
− Vendor specific descriptors
− Bus powered USB device
• ATM SAR performed in software driver
1.3.1
P5200 USB Interface Controller Features
• CX11627 ADSL DMT Data Pump (ADDP) interface
• CX20431 ADSL Analog Front End (AFE) interface
• CX20441ADSL Line Driver (LD) interface
• Internal USB interface
• SDRAM/SRAM interface
• LED interface
• Serial EEPROM interface
• JTAG interface
• 176-pin TQFP
1.3.2
CX11627 ADSL DMT Data Pump Features
• Low power (0.5W) consumption
• DSP-based programmable ADSL data pump
• No external Interleave RAM, 16 Kbytes built-in
• Echo cancellation
• Digital interface and rate buffering
• ADSL framing
• Forward Error Correction (FEC) encoding and decoding and interleaving
• Constellation encoding/decoding
• IFFT modulation and FFT demodulation
• Transmit and receive signal digital filtering
• Time domain equalization
• Frequency domain equalization
• Clock recovery
• CRC and scrambling
• Digital interface framing
• ATM mode
Conexant
100427B
1-3
CONEXANT [ CONEXANT SYSTEMS, INC ]
