AD6636
TABLE OF CONTENTS
Product Description......................................................................... 3
FIR Half-Band Block.................................................................. 29
Intermediate Data Router ......................................................... 32
Mono-Rate RAM Coefficient Filter (MRCF)......................... 32
Decimating RAM Coefficient Filter (DRCF) ........................ 33
Channel RAM Coefficient Filter (CRCF)............................... 35
Interpolating Half-Band Filter.................................................. 36
Output Data Router ................................................................... 37
Automatic Gain Control............................................................ 39
Parallel Port Output ................................................................... 43
User-Configurable Built-In Self-Test (BIST).......................... 47
Chip Synchronization................................................................ 47
Serial Port Control ..................................................................... 48
Microport .................................................................................... 52
JTAG Boundary Scan................................................................. 53
Memory Map .................................................................................. 54
Reading the Memory Map Table.............................................. 54
Global Register Map .................................................................. 56
Input Port Register Map............................................................ 59
Channel Register Map ............................................................... 62
Output Port Register Map......................................................... 67
Design Notes ................................................................................... 70
Outline Dimensions....................................................................... 72
Ordering Guide .......................................................................... 72
Product Highlights....................................................................... 4
Specifications..................................................................................... 5
Electrical Characteristics............................................................. 5
General Timing Characteristics ................................................. 6
Microport Timing Characteristics ............................................. 7
Serial Port Timing Characteristics............................................. 8
Explanation of Test Levels for Specifications............................ 8
Absolute Maximum Ratings............................................................ 9
Thermal Characteristics .............................................................. 9
ESD Caution.................................................................................. 9
Pin Configuration and Function Descriptions........................... 10
Pin Listing for Power, Ground, Data and Address Buses ...... 12
Timing Diagrams............................................................................ 13
Theory of Operation ...................................................................... 19
ADC Input Port .......................................................................... 19
PLL Clock Multiplier ................................................................. 20
ADC Gain Control..................................................................... 21
ADC Input Port Monitor Function.......................................... 22
Quadrature I/Q Correction Block............................................ 24
Input Crossbar Matrix ............................................................... 26
Numerically Controlled Oscillator (NCO)............................. 26
Fifth-Order CIC Filter ............................................................... 28
REVISION HISTORY
8/04—Revision 0: Initial Version
Rev. 0 | Page 2 of 72
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