PEF2466(2001) Ver la hoja de datos (PDF) - Infineon Technologies

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PEF2466
(Rev.:2001)

Four Channel Codec Filter with PCM and Microcontroller Interface SICOFI®4-µC

Infineon Technologies 

PEB 2466

PEF 2466

List of Figures

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SICOFI®4-µC Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SICOFI®4-µC Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Pin Configuration of SICOFI®4-µC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SICOFI®4-µC Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SICOFI®4-µC State Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Analog and PCM Signal Levels in A-Law Mode . . . . . . . . . . . . . . . . . 15

Analog and PCM Signal Levels in µ-Law Mode . . . . . . . . . . . . . . . . . . 15

Simplified Signal Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Total Distortion Measured with Sine-Wave, Receive and Transmit . . . 20

Total Distortion Receive (Noise) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Total Distortion Transmit (Noise) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Overload Compression (µ-Law Coding, Transmit Direction) . . . . . . . . 22

Out-of-Band Discrimination in Transmit Direction . . . . . . . . . . . . . . . . 23

Analog Output: Out-of-Band Signals . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Analog Output: Out-of-Band Idle Channel Noise . . . . . . . . . . . . . . . . . 25

Analog Interface to Four Subscriber Line Interface Circuits (SLICs) . . 28

PCM Interface Example: Location of Time Slots . . . . . . . . . . . . . . . . . 31

PCM Interface Example: Detail A . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Signaling Example: Four Subscriber Lines . . . . . . . . . . . . . . . . . . . . . 33

Serial Microcontroller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Example for a Two-Byte Write Access. . . . . . . . . . . . . . . . . . . . . . . . . 36

Example for a One-Byte Read Access . . . . . . . . . . . . . . . . . . . . . . . . 37

Example for a Read Access with Byte-by-Byte Transfer . . . . . . . . . . . 37

Bi-Directional Data Signal: DIN and DOUT Strapped Together. . . . . . 38

Channel-Specific and Common Coefficients . . . . . . . . . . . . . . . . . . . . 41

Development System with STUT 2466 Evaluation Board . . . . . . . . . . 43

SICOFI®4-µC Test Circuit Configuration . . . . . . . . . . . . . . . . . . . . . . . 44

Proposal for a ground concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

PCM Interface Timing in Single Clocking Mode. . . . . . . . . . . . . . . . . . 49

PCM Interface Timing in Double Clocking Mode . . . . . . . . . . . . . . . . . 50

Timing of the Microcontroller Interface. . . . . . . . . . . . . . . . . . . . . . . . . 51

Signaling Output Timing (data downstream) . . . . . . . . . . . . . . . . . . . . 52

Analog Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Digital Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Cut-Off’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Hardware Reference Manual

2001-02-20

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