Rev 0.90

Page 2 of 44

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PRELIMINARY

Table of Contents

Description................................................................................................................................................................................... 1

Features....................................................................................................................................................................................... 1

Applications ................................................................................................................................................................................. 1

Block Diagram ............................................................................................................................................................................. 1

1 Electrical Characteristics......................................................................................................................................................... 3

2 Device Configurations and Pin-outs........................................................................................................................................ 8

3 Waveform Diagrams ............................................................................................................................................................. 10

4 Termination Diagrams........................................................................................................................................................... 12

5 Test Circuit Diagrams ........................................................................................................................................................... 14

6 Architecture Overview........................................................................................................................................................... 16

7 Functional Overview ............................................................................................................................................................. 16

8 In-system Programmable Functional Description.................................................................................................................. 17

8.1. Any-frequency function ............................................................................................................................................. 17

8.2. DCO Functional Description ..................................................................................................................................... 21

8.3. Software OE Functional Description ......................................................................................................................... 25

9 I2C/SPI Control Registers...................................................................................................................................................... 26

10 I2C Operation ........................................................................................................................................................................ 32

10.1. I2C protocol ............................................................................................................................................................... 32

10.2. I2C Timing Specification............................................................................................................................................ 34

10.3. I2C Device Address Modes ....................................................................................................................................... 35

11 SPI Operation ....................................................................................................................................................................... 36

Ordering Information .................................................................................................................................................................. 43