Document
Data Sheet
VT1708S High Definition Audio Codec January 6, 2009
(Released under Creative Commons License)
Preliminary Revision 1.0
Data Sheet VT1708S High Definition Audio Codec
i
Table of Contents
Table of Contents ...................................................................................................................... i List of Figures.......................................................................................................................... ii List of Tables ........................................................................................................................... ii 1 Product Features ................................................................................................................... 1 2 Overview.............................................................................................................................. 2 3 Pinout .................................................................................................................................. 3 4 Pin List................................................................................................................................. 4 5 Pin Description...................................................................................................................... 5 Digital I/O Pins................................................................................................................... 5 Analog I/O Pins .................................................................................................................. 6 Power and Ground .............................................................................................................. 6 6 High Definition Audio Link Protocol .......................................................................................... 7 6.1 Link Signaling............................................................................................................... 7 6.2 Signal Definitions .......................................................................................................... 7 6.3 Signaling Topology ........................................................................................................ 9 6.4 Frame Composition ....................................................................................................... 9 6.5 Output Frame ............................................................................................................. 11 6.6 Input Frame ............................................................................................................... 12 6.7 Reset and Initialization ................................................................................................ 13 6.8 Handling Stream Independent Sample Rates .................................................................. 17 6.9 Power Management ..................................................................................................... 18 6.10 Unsolicited Response Behavior Description ................................................................... 18 7 Widget Description .............................................................................................................. 19 7.1 Node ID List ............................................................................................................... 19 7.2 Root Node (Node ID = 00) ........................................................................................... 20 7.3 Audio Function Group (Node ID = 01) ........................................................................... 21 7.4 Audio Analog Output Converter Widget (Node ID = 10h, 11h, 24h, 25h)............................ 25 7.5 Audio Digital Output Converter (S/PDIF TX) Widget (Node ID = 12h, 15h) ......................... 29 7.6 Audio Analog Input Converter Widget (Node ID = 13h, 14h) ............................................ 32 7.7 Mixer Widget (Node ID = 16h)...................................................................................... 36 7.8 Selector Widget SW0 (Node ID = 17h) .......................................................................... 39 7.9 Selector Widget SW1-SW3 (Node ID = 18h, 26h, 27h) .................................................... 41 7.10 Pin Widget PW0 (Node ID = 19h) ................................................................................ 44 7.11 Pin Widget PW3 (Node ID =1Ch)................................................................................. 47 7.12 Pin Widget PW4 (Node ID =1Dh)................................................................................. 51 7.13 Pin Widget PW6, PW7 (Node ID = 22h, 23h)................................................................. 56 7.14 Pin Widget PW1, PW2 (Node ID = 1Ah, 1Bh) ................................................................ 59 7.15 Pin Widget PW5 (Node ID = 1Eh) HDMI Audio Output Pin............................................... 64 7.16 Pin W.