CS4812

2

DS291PP3

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 4

2. TYPICAL CONNECTION DIAGRAMS ................................................................................... 14

3. FUNCTIONAL DESCRIPTION ............................................................................................... 17

3.1 Overview .......................................................................................................................... 17

3.2 Analog Inputs ................................................................................................................... 17

3.2.1 Line Level Inputs ................................................................................................. 17

3.2.2 Digital High Pass Filter ........................................................................................ 18

3.3 Analog Outputs ................................................................................................................ 18

3.3.1 Line Level Outputs .............................................................................................. 18

3.4 Clock Generation ............................................................................................................. 19

3.4.1 Clock Source ....................................................................................................... 19

3.5 Serial Control Port ............................................................................................................ 19

3.5.1 SPI Bus ............................................................................................................... 19

3.5.1.1 SPI Master Mode ................................................................................ 20

3.5.1.2 SPI Slave Mode .................................................................................. 20

3.6 Boot Modes ...................................................................................................................... 26

3.6.1 AutoBoot ............................................................................................................. 26

3.6.2 HostBoot ............................................................................................................. 26

3.7 Resets ............................................................................................................................. 27

4. POWER SUPPLY AND GROUNDING ................................................................................... 28

5. PIN DESCRIPTIONS .............................................................................................................. 29

6. PARAMETER DEFINITIONS .................................................................................................. 33

7. PACKAGE DIMENSIONS ...................................................................................................... 34

LIST OF FIGURES

Figure 1. SPI Control Port Slave Mode Timing .......................................................... 8

Figure 2. SPI Control Port Master Mode (AutoBoot) Timing ..................................... 9

Figure 5. Typical Connection Diagram, Control Port Slave Mode ........................... 14

Figure 6. Typical Connection Diagram, Control Port I2C Master Mode ................... 15

Figure 7. Typical Connection Diagram, Control Port SPI Master Mode .................. 15

Figure 8. Typical Connection Diagram, Control Port I2C Slave Mode ..................... 16

Figure 9. Typical Connection Diagram, Control Port SPI Slave Mode .................... 16

Figure 10.Recommended Line Input Buffer .............................................................. 17

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