W681513_05 Datasheet, PDF (4/35 Pages) Winbond – 5V SINGLE-CHANNEL VOICEBAND CODEC FOR USB APPLICATIONS

W681513
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)..................................................................................................... 12
7.4.5. System Timing ...................................................................................................................... 12
8. TIMING DIAGRAMS.......................................................................................................................... 13
9. ABSOLUTE MAXIMUM RATIINGS................................................................................................... 20
9.1. Absolute Maximum Ratings ......................................................................................................... 20
9.2. Operating Conditions ................................................................................................................... 20
10. ELECTRICAL CHARACTERISTICS ............................................................................................... 21
10.1. General Parameters .................................................................................................................. 21
10.2. Analog Signal Level and Gain Parameters ............................................................................... 22
10.3. Analog Distortion and Noise Parameters .................................................................................. 23
10.4. Analog Input and Output Amplifier Parameters......................................................................... 24
10.5. Digital I/O ................................................................................................................................... 26
10.5.1. μ-Law Encode Decode Characteristics............................................................................... 26
10.5.2. A-Law Encode Decode Characteristics .............................................................................. 27
10.5.3. PCM Codes for Zero and Full Scale ................................................................................... 28
10.5.4. PCM Codes for 0dBm0 Output ........................................................................................... 28
11. TYPICAL APPLICATION CIRCUITS .............................................................................................. 29
12. PACKAGE SPECIFICATION .......................................................................................................... 32
12.2. 20L SOP (SOG)-300mil ............................................................................................................. 32
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