鈥?/div>
General
twisted-pair, scalable, DSL transceiver optimized for
low-cost, low-power and high-density applications on
both shielded and unshielded telephone wiring.
鈥?Supports bit rates to 52 Mbps and baud rates to
13 Mbaud
鈥?Less than 1 watt power consumption
鈥?Integrated carrier and clock recovery loops for ease
of use
鈥?Programmable 4-256 QAM constellations
鈥?Single 3.3 V supply operation
鈥?On-chip A/D and D/A converters
鈥?On-chip clock generation
鈥?Adjustable upstream and downstream center
frequencies
鈥?Extensive power management features
鈥?JTAG test interface
鈥?Small 100-pin PQFP form factor
鈥?/div>
Operates up to 52 Mbps fully symmetric
鈥?/div>
Supports symmetric and asymmetric services
鈥?/div>
Operates on shielded and unshielded distribution
cables
鈥?/div>
Suitable for CO, HDT, ONU, and CPE applications
鈥?/div>
Small size and low power enables high port densities
鈥?/div>
Simple spectrum control via register programming
鈥?/div>
Supports frame-based and cell-based transport
streams
Central Office Linecard Block Diagram
Extended
Interleave RAM
BPF
AMP
鈥?/div>
Transport interfaces
鈥?Complete ATM UTOPIA Level 1 and 2
鈥?Rate matching and cell delineation
鈥?Bit-synchronous or byte-synchronous modes
鈥?Programmable frame formats
鈥?Coded/Uncoded payload support
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Transmit notching for amateur radio band compatibility
On-chip and off-chip RAM interleaving
Reed-Solomon FEC
Packet scrambling
Digital square root Nyquist filters
Tomlinson precoder
x/sinx transmit pre-emphasis
Enhanced adaptive decision feedback equalizer
Backplane
Interface
BCM6020
AGC
2W/
4W
Hybrid
POTS
Splitter
BPF
Microcontroller
鈥?/div>
Transceiver
Customer Modem Block Diagram
Extended
Interleave RAM
AMP
BPF
POTS
Splitter
2W/
4W
Hybrid
BCM6020
BPF
AGC
Protocol
ASIC
10BASE-T
To
RJ-45
Microcontroller
BCM6020
Application Example
BCM6020相關(guān)型號PDF文件下載
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