bt8960 Mindspeed Technologies, bt8960 Datasheet - Page 30

• Manufacturer Part Number: bt8960
• Description: Bt8960, Single-chip 2b1q Transceiver
• Manufacturer: Mindspeed Technologies

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2.0 Functional Description
2.2 Receive Section
2.2.2 Analog-to-Digital Converter
2.2.3 Digital Signal Processor
Figure 2-3. Receiver Digital Signal Processing
Front-End
Digital
Echo Canceller
–
LEC
–
NEC
The ADC provides 16 bits of resolution. The analog input from the variable gain
amplifier is converted into digital data and output at the symbol rate.
The Digital Signal Processor (DSP) includes five Least Mean Squared (LMS) fil-
ters: an Echo Canceller (EC), a Digital Automatic Gain Controller (DAGC), a
Feed Forward Equalizer (FFE), an Error Predictor (EP), and a Decision Feedback
Equalizer (DFE). These filters are used to equalize the received signal so that the
symbols transmitted from the far-end can be reliably recovered. The DSP uses
symbol rate sampling for all processing functions. Their interconnections and
relationships to the digital front-end and the detector are illustrated in Figure 2-3.
DAGC
Transmit
Symbol
N8960DSB
FFE
Equalizer
Detector
–
DFE
–
EP
Slicer
PKD
Single-Chip 2B1Q Transceiver
–
–
Interface
Channel
Bt8960
Unit