L64780 LSI Logic Corporation, L64780 Datasheet - Page 5

• Manufacturer Part Number: L64780
• Description: Dvb-t Cofdm Demodulator Technical Manual 2/00
• Manufacturer: LSI Logic Corporation

Chapter 1
Chapter 2
Contents
Introduction
1.1
1.2
1.3
1.4
1.5
1.6
Architectural Overview
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
Contents
Overview
Using the L64780 in a Receiver
RF Tuner Block Functions
Modes of Operation
Features
Typical Performance
Demodulator Module Functional Description
Analog-to-Digital Converter (ADC)
Automatic Gain Control (AGC)
2.3.1
2.3.2
2.3.3
Real-to-Complex Conversion
Fast Fourier Transform (FFT) Block
Time Synchronization
2.6.1
2.6.2
2.6.3
Automatic Frequency Control (AFC)
2.7.1
2.7.2
2.7.3
2.7.4
2.7.5
TPS Decoding and Frame Synchronization
Mode Control Logic
AGC Target RMS Value
AGC External Loop Filter
AGC Loop Gain Ks
Timing Loop Gain
TIM_CLK_INIT Register Definition
TIM External Loop Filter
Analog Frequency Synchronization
Digital Frequency Synchronization
AFC Loop Gain
AFC_INIT_FREQ Register Definition
AFC External Loop Filter
2-10
2-10
2-10
2-11
2-12
2-12
2-13
2-14
1-1
1-3
1-4
1-6
1-6
1-7
2-2
2-4
2-4
2-4
2-5
2-6
2-7
2-8
2-8
2-8
2-9
2-9
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