ALC888
Datasheet
Table of Contents
1.
2.
GENERAL DESCRIPTION ...................................................................................................................................1
FEATURES ..............................................................................................................................................................2
2.1.
2.2.
2.3.
HARDWARE FEATURES................................................................................................................................................2
ALC888-VC-GR SPECIFIC FEATURES........................................................................................................................3
SOFTWARE FEATURES .................................................................................................................................................3
3.
4.
SYSTEM APPLICATIONS ....................................................................................................................................4
BLOCK DIAGRAM................................................................................................................................................5
ANALOG INPUT/OUTPUT UNIT....................................................................................................................................6
PIN ASSIGNMENTS...............................................................................................................................................7
GREEN PACKAGE AND VERSION IDENTIFICATION .......................................................................................................7
PIN DESCRIPTIONS..............................................................................................................................................8
4.1.
5.1.
5.
6.
6.1.
6.2.
6.3.
6.4.
DIGITAL I/O PINS........................................................................................................................................................8
ANALOG I/O PINS .......................................................................................................................................................8
FILTER/REFERENCE/NC..............................................................................................................................................9
POWER/GROUND ........................................................................................................................................................9
7.
HIGH DEFINITION AUDIO LINK PROTOCOL.............................................................................................10
7.1.
LINK SIGNALS ..........................................................................................................................................................10
7.1.1. Signal Definitions.................................................................................................................................................11
7.1.2. Signaling Topology...............................................................................................................................................12
7.2.
FRAME COMPOSITION...............................................................................................................................................13
7.2.1. Outbound Frame – Single SDO............................................................................................................................13
7.2.2. Outbound Frame – Multiple SDOs.......................................................................................................................14
7.2.3. Inbound Frame – Single SDI................................................................................................................................15
7.2.4. Inbound Frame – Multiple SDIs...........................................................................................................................16
7.2.5. Variable Sample Rates..........................................................................................................................................16
7.3.
RESET AND INITIALIZATION ......................................................................................................................................19
7.3.1. Link Reset .............................................................................................................................................................19
7.3.2. Codec Reset..........................................................................................................................................................20
7.3.3. Codec Initialization Sequence ..............................................................................................................................21
7.4.
VERB AND RESPONSE FORMAT .................................................................................................................................22
7.4.1. Command Verb Format ........................................................................................................................................22
7.4.2. Response Format..................................................................................................................................................22
7.5.
POWER MANAGEMENT .............................................................................................................................................23
7.5.1. System Power State Definitions............................................................................................................................23
7.5.2. Power Controls in NID 01h..................................................................................................................................23
7.5.3. Powered Down Conditions...................................................................................................................................24
7.5.4. ALC888-VC Additional Power Features ..............................................................................................................24
8.
SUPPORTED VERBS AND PARAMETERS .....................................................................................................25
8.1.
VERB – GET PARAMETERS (VERB ID=F00H)............................................................................................................25
8.1.1. Parameter – Vendor ID (Verb ID=F00h, Parameter ID=00h).............................................................................25
8.1.2. Parameter – Revision ID (Verb ID=F00h, Parameter ID=02h) ..........................................................................25
8.1.3. Parameter – Subordinate Node Count (Verb ID=F00h, Parameter ID=04h)......................................................26
8.1.4. Parameter – Function Group Type (Verb ID=F00h, Parameter ID=05h)...........................................................26
8.1.5. Parameter – Audio Function Capabilities (Verb ID=F00h, Parameter ID=08h)................................................27
7.1+2 Channel High Definition Audio Codec
iii
Track ID: JATR-1076-21 Rev. 1.4
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