W681310

- 4 -

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....................................................................................................................... 9

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

7.3.2. Analog Ground Reference Bypass .......................................................................................10

7.3.3. Analog Ground Reference Voltage Outpt .............................................................................10

7.4. PCM INTERFACE .......................................................................................................................10

7.4.1. Long Frame Sync..................................................................................................................11

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 RATINGS.................................................................................................... 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 CIRCUIT................................................................................................. 29

12. PACKAGE SPECIFICATION .......................................................................................................... 31