CM6327A
USB Single-Chip Audio Solution for Mono Microphone
TABLE OF CONTENTS
1
2
3
Description and Overview ................................................................................................ 4
Features ..................................................................................................................... 4
Pin Descriptions ............................................................................................................ 6
3.1
3.2
3.3
Pin Assignment by Pin Number................................................................................. 6
Pin-Out Diagram.................................................................................................. 6
Pin Signal Descriptions .......................................................................................... 7
4
5
6
Block Diagram .............................................................................................................. 9
Ordering Information.....................................................................................................10
USB Audio Topology and Descriptions..................................................................................11
6.1
6.2
6.3
6.4
USB Audio Topology .............................................................................................11
Device Descriptors ..............................................................................................11
Configuration Descriptors......................................................................................12
Standard HID Interface Descriptors..........................................................................13
7
Function Block Descriptions:............................................................................................14
7.1 I2C Interface: ....................................................................................................14
7.1.1
Master Mode: ..........................................................................................14
Slave Mode: ............................................................................................15
EEPROM Data Format.................................................................................19
7.1.2
7.1.3
8
Electrical Characteristics:...............................................................................................21
8.1 Absolute Maximum Rating ...............................................................................................21
8.2 Operation Conditions.....................................................................................................21
8.3 Electrical Parameters ....................................................................................................22
9
Analog Performance ......................................................................................................23
9.1
9.2
ADC Frequency Response ......................................................................................23
ADC THD + N .....................................................................................................23
Reference .........................................................................................................................24
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