W6811 Datasheet, PDF (4/37 Pages) Winbond – SINGLE-CHANNEL VOICEBAND CODEC

W6811
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............................................................................................................ 9
7.1. Transmit Path............................................................................................................................. 9
7.2. Receive Path............................................................................................................................ 10
7.3. Power Management................................................................................................................. 11
7.3.1. Analog Supply ................................................................................................................ 11
7.3.2. Digital Supply ................................................................................................................. 11
7.3.3. Analog Ground Reference Bypass................................................................................. 11
7.3.4. Analog Ground Reference Voltage Output .................................................................... 11
7.4. PCM Interface .......................................................................................................................... 11
7.4.1. Long Frame Sync ........................................................................................................... 12
7.4.2. Short Frame Sync .......................................................................................................... 12
7.4.3. GCI Interface .................................................................................................................. 12
7.4.4. IDL Interface................................................................................................................... 13
7.4.5. System Timing................................................................................................................ 13
8. TIMING DIAGRAMS.......................................................................................................................... 14
9. ABSOLUTE MAXIMUM RATINGS.................................................................................................... 21
9.1. Absolute Maximum Ratings ................................................................................................... 21
9.2. Operating Conditions ............................................................................................................. 21
10. ELECTRICAL CHARACTERISTICS ............................................................................................... 22
10.1. General Parameters .............................................................................................................. 22
10.2. Analog Signal Level and Gain Parameters............................................................................ 23
10.3. Analog Distortion and Noise Parameters .............................................................................. 24
10.4. Analog Input and Output Amplifier Parameters ..................................................................... 25
10.5. Digital I/O ............................................................................................................................... 27
10.5.1. µ-Law Encode Decode Characteristics........................................................................ 27
10.5.2. A-Law Encode Decode Characteristics ....................................................................... 28
10.5.3. PCM Codes for Zero and Full Scale ............................................................................ 29
10.5.4. PCM Codes for 0dBm0 Output .................................................................................... 29
11. TYPICAL APPLICATION CIRCUIT ................................................................................................. 30
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