Cirrus Logic CS485 manuály

Cirrus logic CS485 Uživatelský manuál (102 strany)

Značka: Cirrus-logic | Kategorie: Zvukové karty | Velikost: 1.69 MB |

Angličtina

Tabulka s obsahem

CS485xx

1

Contents

3

Chapter 1

9

1.1 Overview

9

Overview

10

1.2 Code Overlays

13

1.3.1 DSP Core

14

1.3.2 Debug Controller (DBC)

14

1.3.10 Internal Timers

16

1.3.11 Watchdog Timer

16

1.3.12 Clock Manager and PLL

16

1.3.9 DMA Controller

16

Introduction

19

2.3 Slave Boot Procedures

20

2.3.1 Slave Boot

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Slave Boot Procedures

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2.3.2.1 Slave Boot Procedure

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2.3.3 Boot Messages

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2.5 Softboot

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2.5.2.1 Softboot Steps

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2.5.2.2 Softboot Example

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Softboot

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CS485xx to begin

28

Mnemonic Value

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Send .uld from Table 2

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Chapter 3

33

Serial Control Port

33

3.1 Introduction

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3.2.1 I

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3.2.2 I

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C System Bus Description

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3.2.2.1 I

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C Bus Dynamics

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Figure 3-4. I

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C Address with ACK and NACK

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3.2.2.2.1 SCP_BSY Behavior

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3.2.2.3.1 I

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C Write Protocol Procedure

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Figure 3-9. I

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C Read Flow Diagram

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3.2.2.4.1 I

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C Read Protocol Procedure

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3.2.2.4.2 SCP_IRQ Behavior

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M S S M S M S M S M M

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3.3 SPI Port

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3.3.1.1 SPI Bus Dynamics

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3.3.1.1.1 SCP_BSY Behavior

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3.3.1.2 SPI Messaging

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SPI Port

50

4.2.1 DAI Pin Description

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DAI1_DATA0

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DMA to Peripheral Bus

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DAI1_DATA1

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DAI2_DATA0

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DAI1_DATA2

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4.2.3 Digital Audio Formats

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A - Data Format

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B - SCLK Polarity

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C - LRCLK Polarity

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D - DAI Mode (Unsupported)

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E - DAI2_DATA Clock Source

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F - DAI1_DATA Clock Source

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G - Chip Version

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H - Chip Version

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DAI Hardware Configuration

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Chapter 5

65

Chapter 6

67

6.1 Introduction

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DAO1_DATA3, XMTA

68

DAO_MCLK

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DAO_SCLK

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DAO_LRCLK

68

6.2.3 DAO Interface Formats

70

6.2.5 S/PDIF Transmitter

75

0x8100001e

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0x00005080

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Chapter 7

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7.1 System Clocking Controls

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XTAL_OUT Divide-by-2

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Chapter 8

79

8.1 Introduction

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8.2 GPIO Description

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Watchdog Timer Description

80

Typical Connection Diagrams

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Figure 9-2. I

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Figure 9-3. I

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Figure 9-4. I

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9.2 Pin Description

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9.2.2 PLL Filter

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9.3 Clocking

92

9.4 Control

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9.4.1 Operational Mode

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48-Pin LQFP Pin Assigments

94

Pin Assignments

100

Revision Date Changes

101

Revision History

102

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