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109059790 Datasheet PDF : 50 Pages
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T8535B/T8536B Quad Programmable Codec
Preliminary Data Sheet
September 2001
Table of Contents
Contents
Page
Features .................................................................................................................................................................... 1
Description................................................................................................................................................................. 1
General Description................................................................................................................................................... 4
Pin Information ..........................................................................................................................................................5
Functional Description .............................................................................................................................................13
Clocking Considerations .......................................................................................................................................13
The Control Interface ............................................................................................................................................13
Modes ................................................................................................................................................................13
Protocol ..............................................................................................................................................................14
Write Command .................................................................................................................................................16
Read Command .................................................................................................................................................18
Fast Scan Mode .................................................................................................................................................20
Write All Channels..............................................................................................................................................23
Reset Functionality ...............................................................................................................................................23
Memory Control Mapping ...................................................................................................................................24
Standby Mode.......................................................................................................................................................24
Test Capabilities ...................................................................................................................................................24
SLIC Control Capabilities ......................................................................................................................................24
Suggested Initialization Procedures......................................................................................................................25
Signal Processing .................................................................................................................................................25
Absolute Maximum Ratings.....................................................................................................................................26
Operating Ranges ...................................................................................................................................................26
Handling Precautions ..............................................................................................................................................26
Electrical Characteristics .........................................................................................................................................27
dc Characteristics .................................................................................................................................................27
Analog Interface....................................................................................................................................................28
Gain and Dynamic Range .....................................................................................................................................29
Noise Characteristics ............................................................................................................................................31
Distortion and Group Delay...................................................................................................................................32
Crosstalk ...............................................................................................................................................................33
Timing Characteristics .............................................................................................................................................34
Control Interface Timing........................................................................................................................................34
Serial Control Port Timing ..................................................................................................................................34
Normal Mode......................................................................................................................................................35
Byte-by-Byte Mode.............................................................................................................................................35
PCM Interface Timing ...........................................................................................................................................36
Single-Clocking Mode ........................................................................................................................................36
Double-Clocking Mode.......................................................................................................................................38
Software Interface ...................................................................................................................................................40
Applications .............................................................................................................................................................44
Outline Diagrams.....................................................................................................................................................45
100-Pin TQFP .......................................................................................................................................................45
68-Pin PLCC .........................................................................................................................................................46
64-Pin TQFP .........................................................................................................................................................47
44-Pin PLCC .........................................................................................................................................................48
Ordering Information................................................................................................................................................49
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Agere Systems Inc.
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