Symmetricom, Inc.
bc620/627AT Time and Frequency Processor
i
bc620/627AT
TIME AND FREQUENCY PROCESSOR
TABLE OF CONTENTS
SECTION
PAGE
CHAPTER ONE
INTRODUCTION
1.0 General.................................................................................................................................. 1-1
1.1 Key Features ......................................................................................................................... 1-1
1.2 Physical and Functional Overview ....................................................................................... 1-2
1.3 Performance Specifications .................................................................................................. 1-4
1.3.1 Time Code Reader ................................................................................................. 1-4
1.3.2
Time Code Generator............................................................................................. 1-4
1.3.3 Bus Characteristics ................................................................................................ 1-4
1.3.4 Digital Inputs ......................................................................................................... 1-4
1.3.5 Digital Outputs....................................................................................................... 1-5
1.3.6 External 10 MHz Input .......................................................................................... 1-5
1.3.7 Environmental Specifications ................................................................................ 1-5
1.3.8 Digital Synchronization Signals ............................................................................ 1-5
CHAPTER TWO
INSTALLATION AND SETUP
2.0 General.................................................................................................................................. 2-1
2.1 Base Address Selection......................................................................................................... 2-1
2.2 Installation Procedure ........................................................................................................... 2-4
2.3 Demonstration Programs ...................................................................................................... 2-5
2.4 MS-DOS Device Driver........................................................................................................ 2-5
CHAPTER THREE
SOFTWARE INTERFACE
3.0 General.................................................................................................................................. 3-1
3.0.1 Glossary of Key Terms .......................................................................................... 3-1
3.1 Registers................................................................................................................................ 3-2
3.1.1 PAGE Select Register............................................................................................ 3-2
3.1.2 TIMEREQ and TIME0-TIME7 Registers ............................................................. 3-2
3.1.3 CR0 Control Register 0 ......................................................................................... 3-8
3.1.4 EVENT0-EVENT8 Time Capture Registers ......................................................... 3-8
3.1.5 UNLOCK Register................................................................................................. 3-8
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