Intel STEL-2176 Manuals

Manuals and User Guides for Intel STEL-2176. We have 1 Intel STEL-2176 manual available for free PDF download: User Manual

Intel STEL-2176 User Manual (80 pages)

Digital Mod/Demod ASIC 16/64/256 QAM Receiver with FEC QPSK/16 QAM Transmitter with FEC

Brand: Intel | Category: Receiver | Size: 1.54 MB

Table of Contents
5
Key Features
10
Receiver
10
Transmitter
10
Introduction
11
Receiver Overview
11
Transmitter Overview
11
Mechanical Specifications
12
208-Pin Sqfp Package
12
Electrical Specifications
17
Receiver
19
Overview
19
Functional Blocks
20
Adc
20
Microcontroller Interface
20
Master Receive Clock Generator
21
QAM Demodulator Blocks
22
FEC Decoder Blocks
23
Demapper
23
De-I Nterleaver
25
Derandomizer
28
De-I Nterleaver
28
Receive and Universal Register Descriptions
29
Programming the 2176 Receive Functions
29
Register Descriptions
29
Bank 0 - Universal Registers (Group 1)
29
Bank 0 - QAM Demodulator Registers Universal Registers (Group 2)
31
Bank 1 - FEC Registers (Group 3)
39
Timing
44
No Gap, Parallel Mode
44
No Gap, Serial Mode
44
Gaps, Parallel Mode
44
Gaps, Serial Mode
44
Downstream Output Timing (Serial Output)
45
Downstream Output Timing (Parallel Data Output)
46
De-Interleaver External Sram Timing
47
Transmitter
48
Introduction
48
Functional Block Diagram Descriptions
48
Data Path Description
48
Bit SYNC Block
48
Bit Encoder Block
50
Symbol Mapper Block
54
Gray Coded Constellation
58
Left Coded Constellation
58
Nyquist FIR Filter
59
Interpolating Filter
59
Modulator
60
Interpolation Filter Block Diagram
60
10-Bit DAC
61
Control Unit Description
61
Bus Interface Unit
61
Master Transmit Clock Generator
61
Clock Generator
62
Nco
62
Master Clock Generation
62
Transmit Register Descriptions
63
Programming the 2176 Transmit and Receive Functions
63
Block 2, Upstream Registers (Group 4)
63
Timing Diagrams
66
Burst Timing Examples
74
Recommended Interface Circuits
79

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Intel STEL-2176 User Manual (80 pages)

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