VT1620A Datasheet PDF - VIA

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VT1620A
VIA

Part Number VT1620A
Description VinylUSB USB2.0 FS Audio Codec
Page 27 Pages


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Data Sheet
VT1620A
VinylUSB USB2.0 FS Audio Codec
April 22, 2010
Revision 1.01



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Data Sheet
VT1620A VinylUSB USB2.0 FS Audio Codec
Revision History
Rev
1.0
1.01
Date
Dec. 8, 09
Apr. 22, 10
Initial
TL
TL
Note
Initial external release
Corrected typo in functional block diagram
Updated legal page
i



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Data Sheet
VT1620A VinylUSB USB2.0 FS Audio Codec
ii
Table of Contents
Revision History ........................................................................................................................ i
Table of Contents ..................................................................................................................... ii
List of Figures..........................................................................................................................iii
List of Tables ...........................................................................................................................iii
1 Product Features ................................................................................................................... 1
2 Overview.............................................................................................................................. 2
3 Pinout .................................................................................................................................. 3
4 Pin List................................................................................................................................. 4
5 Pin Description...................................................................................................................... 5
5.1 USB Interface ............................................................................................................... 5
5.2 I2C Interface ................................................................................................................ 5
5.3 Button & LED Interface .................................................................................................. 5
5.4 S/PDIF Interface ........................................................................................................... 5
5.5 Clock Interface ............................................................................................................. 5
5.6 SPI Interface ................................................................................................................ 5
5.7 Codec Interface ............................................................................................................ 6
5.8 Power & Ground............................................................................................................ 6
5.9 GPIO (General Purpose Input/Output) Interface................................................................ 6
5.10 Test Mode Interface ..................................................................................................... 6
6 Memory Map......................................................................................................................... 7
6.1 Program Memory Space ................................................................................................. 7
6.2 Data Memory Space ...................................................................................................... 7
6.3 MCU Internal Registers .................................................................................................. 7
6.4 Configuration Registers and Data Memory ........................................................................ 8
7 Audio Capabilities .................................................................................................................. 9
7.1 Multiple Audio Configuration Support ............................................................................... 9
7.2 Audio Topologies ......................................................................................................... 10
7.3 Default Microphone Array Geometry Descriptor............................................................... 12
7.4 Default Manufacturer String ......................................................................................... 14
7.5 Default Product String ................................................................................................. 14
7.6 User Customization ..................................................................................................... 14
8 Clock and Crystal Networks .................................................................................................. 17
8.1 External Clock Source or Crystal Networks ..................................................................... 17
8.2 Internal Clock Generation ............................................................................................ 18
8.3 Clock Divisor Settings.................................................................................................. 19
9 Electrical Specification ......................................................................................................... 20
9.1 Absolute Maximum Ratings .......................................................................................... 20
9.2 Recommended Operating Conditions ............................................................................. 20
9.3 Electrical Parameters ................................................................................................... 20
10 Mechanical Specification ..................................................................................................... 22



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Data Sheet
VT1620A VinylUSB USB2.0 FS Audio Codec
iii
List of Figures
Figure 1 – VT1620A Functional Block Diagram ............................................................................. 2
Figure 2 – VT1620A Pin Diagram for LQFP-48 (Top View) .............................................................. 3
Figure 3 – Audio Topology of USB Dongle .................................................................................. 10
Figure 4 – Audio Topology of USB Headset ................................................................................ 10
Figure 5 – Audio Topology of USB Speaker ................................................................................ 11
Figure 6 – Audio Topology of USB Microphone............................................................................ 11
Figure 7 – Audio Topology of USB Mic-Array .............................................................................. 11
Figure 8 – Microphone Array Coordinate System ........................................................................ 13
Figure 9 – VT1620A Clock and Crystal Networks ........................................................................ 17
Figure 10 – VT1620A Clock Generator ...................................................................................... 18
Figure 11 – VT1620A LQFP-48 Package (7 mm×7 mm)............................................................... 22
List of Tables
Table 1 – VT1620A Pin List ........................................................................................................ 4
Table 2 – Program Memory Space of VT1620A ............................................................................. 7
Table 3 – Memory Map of MCU Internal Registers ......................................................................... 7
Table 4 – Memory Map of Configuration Registers and Data Memory............................................... 8
Table 5 – Settings of CONFIG [2:0] for VT1620A .......................................................................... 9
Table 6 – VT1620A Configuration Options.................................................................................... 9
Table 7 – Microphone Array Information.................................................................................... 12
Table 8 – Settings of FSEL [1:0] for VT1620A versus EEPROM Types............................................. 14
Table 9 – EEPROM Data Structure ............................................................................................ 15
Table 10 – Clock Divisor Settings ............................................................................................. 19



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