Service Manuals, User Guides, Schematic Diagrams or docs for : Western Digital _dataBooks 1992_SystemLogic_Imaging_Storage 09_ICS90C61A

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                                                        ICS90C61A

                                  TABLE OF CONTENTS
Section   Title                                              Page
          PREFACE                                             9-1

1.0       INTRODUCTION                                        9-1
          1.1  Description                                    9-1
          1.2  Features                                       9-2

2.0       ICS90C61 A VGA INTERFACE                            9-3
          2.1  System Bus Inputs                              9-4
          2.2   Inputs from VGA Controller                    9-4
          2.3  Outputs to VGA Controller                      9-4
          2.4  Analog Filters                                 9-4
          2.5  User Definable Inputs                          9-4
          2.6  Power Considerations                           9-5

3.0       PIN DESCRIPTIONS        . . .                       9-8

4.0       ABSOLUTE MAXIMUM RATINGS                            9-9
          4.1 Standard Test Conditions                        9-9
          4.2 D.C. Characteristics                            9-9

5.0       AC Timing Characteristics                          9-10

6.0       Packaging Information                              9-12




                                             11115/91          9-i
ICS90C61A

                                 LIST OF ILLUSTRATIONS
Figure      Title                                         Page
2-1         ICS90C61A Interface                            9-3
2-2         ICS90C61 A Functional Block Diagram            9-7
5-1         ICS90C61 A Timings    ...... .                9-11
6-1         ICS90C61A 20-Pin PLCC Package Dimensions      9-12
6-2         Other ICS Package Dimensions    . . . . . .   9-13


                                        LIST OF TABLES
Table       Title                                         Page
1-1         VCLK Selection                                 9-6
1-2         MCLK Selection                                 9-6
3-1         Pin Descriptions                               9-8
4-1         D.C. Characteristics                           9-9
5-1         AC Timing Characteristics                     9-10




9-ii                                        11/15/91
PREFACE                                                                                                                                  ICS90C61A

          PREFACE
The Integrated Circuit Systems ICS90C61A dual
video/memory clock generator was designed ex-                                                                    ::.:::
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graphics chips.                                                                                          ()      W
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Because you get optimum video subsystem perfor-
mance when you use this video/memory clock gen-
erator with Western Digital video graphics chips, we
have included the ICS90C61 A in our databook.
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