W681511SG Просмотр технического описания (PDF) - Nuvoton Technology

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W681511SG

SINGLE-CHANNEL VOICEBAND CODEC

Nuvoton Technology 

W681511

4. TABLE OF CONTENTS

1. GENERAL DESCRIPTION.................................................................................................................. 2

2. FEATURES ......................................................................................................................................... 2

3. BLOCK DIAGRAM .............................................................................................................................. 3

4. TABLE OF CONTENTS ...................................................................................................................... 4

5. PIN CONFIGURATION ....................................................................................................................... 6

6. PIN DESCRIPTION ............................................................................................................................. 7

7. FUNCTIONAL DESCRIPTION............................................................................................................ 8

7.1. Transmit Path ................................................................................................................................ 8

7.2. Receive Path ................................................................................................................................. 9

7.3. Power Management..................................................................................................................... 10

7.3.1. Analog and Digital Supply ..................................................................................................... 10

7.3.2. Analog Ground Reference Voltage Outpt ............................................................................. 10

7.4. PCM Interface .......................................................................................................................... 10

7.4.1. Long Frame Sync .................................................................................................................. 10

7.4.2. Short Frame Sync ................................................................................................................. 11

7.4.3. General Circuit Interface (GCI) ............................................................................................. 11

7.4.4. Interchip Digital Link (IDL)..................................................................................................... 11

7.4.5. System Timing ...................................................................................................................... 11

8. TIMING DIAGRAMS.......................................................................................................................... 12

9. Absolute Maximum Ratings............................................................................................................... 19

9.1. Absolute Maximum Ratings ......................................................................................................... 19

9.2. Operating Conditions ................................................................................................................... 19

10. ELECTRICAL CHARACTERISTICS ............................................................................................... 20

10.1. General Parameters .................................................................................................................. 20

10.2. Analog Signal Level and Gain Parameters ............................................................................... 21

10.3. Analog Distortion and Noise Parameters .................................................................................. 22

10.4. Analog Input and Output Amplifier Parameters ......................................................................... 23

10.5. Digital I/O ................................................................................................................................... 25

10.5.1. μ-Law Encode Decode Characteristics............................................................................... 25

10.5.2. A-Law Encode Decode Characteristics .............................................................................. 26

10.5.3. PCM Codes for Zero and Full Scale ................................................................................... 27

Publication Release Date: January 2009

-4-

Revision A11

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