ALC221 Datasheet PDF - Realtek Microelectronics


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ALC221
Realtek Microelectronics

Part Number ALC221
Description HIGH DEFINITION AUDIO CODEC
Page 30 Pages

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ALC221
(P/N: ALC221-GR)
HIGH DEFINITION AUDIO CODEC WITH
MONO CLASS-D SPEAKER AMPLIFIER
DATASHEET
Version 0.65
25th May 2011
Realtek Semiconductor Corp.
No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
Tel.: +886-3-578-0211. Fax: +886-3-577-6047
www.realtek.com



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ALC221
Datasheet
COPYRIGHT
©2011 Realtek Semiconductor Corp. All rights reserved. No part of this document may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means without the written permission of Realtek Semiconductor Corp.
DISCLAIMER
Realtek provides this document “as is”, without warranty of any kind, neither expressed nor implied,
including, but not limited to the particular purpose. Realtek may make improvements and/or changes in
this document or in the product described in this document at any time. This document could include
technical inaccuracies or typographical errors.
TRADEMARKS
Realtek is a trademark of Realtek Semiconductor Corporation. Other names mentioned in this document
are trademarks/registered trademarks of their respective owners.
USING THIS DOCUMENT
This document is intended for the hardware and software engineer’s general information on the Realtek
ALC221 HD Audio Codec IC.
Though every effort has been made to ensure that this document is current and accurate, more
information may have become available subsequent to the production of this guide. In that event, please
contact your Realtek representative for additional information that may help in the development process.
REVISION HISTORY
Revision Release Date
0.10 2010/10/01
0.50 2010/10/25
0.60 2011/03/03
0.65 2011/05/25
Summary
Preliminary release
Update features list and block diagram.
1. Update hardware features list
2. Update pin description
3. Add application circuits
1. Change package information
High Definition Audio Codec with Embedded
Mono Class-D Speaker Amplifier
ii
Rev. 0.65



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ALC221
Datasheet
Table of Contents
1.  GENERAL DESCRIPTION ..............................................................................................................................................1 
2.  FEATURES .........................................................................................................................................................................2 
2.1.  HARDWARE FEATURES .................................................................................................................................................2 
2.2.  SOFTWARE FEATURES ..................................................................................................................................................4 
3.  SYSTEM APPLICATIONS ...............................................................................................................................................4 
4.  BLOCK DIAGRAM ...........................................................................................................................................................5 
4.1.  ANALOG INPUT/OUTPUT UNIT .....................................................................................................................................6 
5.  PIN ASSIGNMENTS..........................................................................................................................................................7 
5.1.  GREEN PACKAGE AND VERSION IDENTIFICATION .........................................................................................................7 
6.  PIN DESCRIPTIONS.........................................................................................................................................................8 
6.1.  DIGITAL I/O PINS .........................................................................................................................................................8 
6.2.  ANALOG I/O PINS ........................................................................................................................................................8 
6.3.  FILTER/REFERENCE......................................................................................................................................................9 
6.4.  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.  Inbound Frame – Single SDI ................................................................................................................................14 
7.2.3.  Variable Sample Rates..........................................................................................................................................15 
7.3.  RESET AND INITIALIZATION........................................................................................................................................18 
7.3.1.  Link Reset .............................................................................................................................................................18 
7.3.2.  Codec Reset ..........................................................................................................................................................19 
7.3.3.  Codec Initialization Sequence ..............................................................................................................................20 
7.4.  VERB AND RESPONSE FORMAT...................................................................................................................................21 
7.4.1.  Command Verb Format ........................................................................................................................................21 
7.4.2.  Response Format..................................................................................................................................................21 
7.4.3.  Double Function Reset .........................................................................................................................................22 
7.5.  POWER MANAGEMENT...............................................................................................................................................22 
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)................................................26 
8.1.6.  Parameter – Audio Widget Capabilities (Verb ID=F00h, Parameter ID=09h) ...................................................27 
8.1.7.  Parameter – Supported PCM Size, Rates (Verb ID=F00h, Parameter ID=0Ah).................................................28 
8.1.8.  Parameter – Supported Stream Formats (Verb ID=F00h, Parameter ID=0Bh)..................................................29 
8.1.9.  Parameter – Pin Capabilities (Verb ID=F00h, Parameter ID=0Ch) ..................................................................29 
8.1.10.  Parameter – Amplifier Capabilities (Verb ID=F00h, Input Amplifier Parameter ID=0Dh)...........................30 
High Definition Audio Codec with Embedded
Mono Class-D Speaker Amplifier
iii
Rev. 0.65



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ALC221
Datasheet
8.1.11.  Parameter – Amplifier Capabilities (Verb ID=F00h, Output Amplifier Parameter ID=12h) .........................30 
8.1.12.  Parameter – Connect List Length (Verb ID=F00h, Parameter ID=0Eh)........................................................31 
8.1.13.  Parameter – Supported Power States (Verb ID=F00h, Parameter ID=0Fh)..................................................31 
8.1.14.  Parameter – Processing Capabilities (Verb ID=F00h, Parameter ID=10h) ..................................................31 
8.1.15.  Parameter – GPIO Capabilities (Verb ID=F00h, Parameter ID=11h)...........................................................32 
8.1.16.  Parameter – Volume Knob Capabilities (Verb ID=F00h, Parameter ID=13h)...............................................32 
8.2.  VERB – GET CONNECTION SELECT CONTROL (VERB ID=F01H) ................................................................................33 
8.3.  VERB – SET CONNECTION SELECT (VERB ID=701H) .................................................................................................33 
8.4.  VERB – GET CONNECTION LIST ENTRY (VERB ID=F02H)..........................................................................................34 
8.5.  VERB – GET PROCESSING STATE (VERB ID=F03H) ....................................................................................................36 
8.6.  VERB – SET PROCESSING STATE (VERB ID=703H).....................................................................................................37 
8.7.  VERB – GET COEFFICIENT INDEX (VERB ID=DH) ......................................................................................................37 
8.8.  VERB – SET COEFFICIENT INDEX (VERB ID=5H) .......................................................................................................38 
8.9.  VERB – GET PROCESSING COEFFICIENT (VERB ID=CH) ............................................................................................38 
8.10.  VERB – SET PROCESSING COEFFICIENT (VERB ID=4H)..............................................................................................38 
8.11.  VERB – GET AMPLIFIER GAIN (VERB ID=BH) ...........................................................................................................39 
8.12.  VERB – SET AMPLIFIER GAIN (VERB ID=3H).............................................................................................................42 
8.13.  VERB – GET CONVERTER FORMAT (VERB ID=AH) ....................................................................................................43 
8.14.  VERB – SET CONVERTER FORMAT (VERB ID=2H)......................................................................................................44 
8.15.  VERB – GET POWER STATE (VERB ID=F05H) ............................................................................................................44 
8.16.  VERB – SET POWER STATE (VERB ID=705H) .............................................................................................................46 
8.17.  VERB – GET CONVERTER STREAM, CHANNEL (VERB ID=F06H) ...............................................................................46 
8.18.  VERB – SET CONVERTER STREAM, CHANNEL (VERB ID=706H) ................................................................................47 
8.19.  VERB – GET PIN WIDGET CONTROL (VERB ID=F07H)...............................................................................................47 
8.20.  VERB – SET PIN WIDGET CONTROL (VERB ID=707H)................................................................................................48 
8.21.  VERB – GET UNSOLICITED RESPONSE CONTROL (VERB ID=F08H) ...........................................................................48 
8.22.  VERB – SET UNSOLICITED RESPONSE CONTROL (VERB ID=708H) ............................................................................49 
8.23.  VERB – GET PIN SENSE (VERB ID=F09H)..................................................................................................................49 
8.24.  VERB – EXECUTE PIN SENSE (VERB ID=709H)..........................................................................................................50 
8.25.  VERB – GET CONFIGURATION DEFAULT (VERB ID=F1CH) ........................................................................................51 
8.26.  VERB – SET CONFIGURATION DEFAULT BYTES 0, 1, 2, 3 (VERB ID=71CH/71DH/71EH/71FH FOR BYTES 0, 1, 2, 3) .52 
8.27.  VERB – GET BEEP GENERATOR (VERB ID=F0AH)....................................................................................................52 
8.28.  VERB – SET BEEP GENERATOR (VERB ID=70AH).....................................................................................................53 
8.29.  VERB – GET GPIO DATA (VERB ID=F15H)................................................................................................................53 
8.30.  VERB – SET GPIO DATA (VERB ID=715H).................................................................................................................54 
8.31.  VERB – GET GPIO ENABLE MASK (VERB ID=F16H).................................................................................................54 
8.32.  VERB – SET GPIO ENABLE MASK (VERB ID=716H)..................................................................................................55 
8.33.  VERB – GET GPIO DIRECTION (VERB ID=F17H).......................................................................................................55 
8.34.  VERB – SET GPIO DIRECTION (VERB ID=717H)........................................................................................................56 
8.35.  VERB – GET GPIO WAKE ENABLE MASK(VERB ID=F18H).......................................................................................56 
8.36.  VERB – SET GPIO WAKE ENABLE MASK (VERB ID=718H).......................................................................................57 
8.37.  VERB – GET GPIO UNSOLICITED RESPONSE ENABLE MASK (VERB ID=F19H).........................................................57 
8.38.  VERB – SET GPIO UNSOLICITED RESPONSE ENABLE MASK (VERB ID=719H)..........................................................58 
8.39.  VERB – FUNCTION RESET (VERB ID=7FFH) ..............................................................................................................58 
8.40.  VERB – GET DIGITAL CONVERTER CONTROL 1 & CONTROL 2 (VERB ID=F0DH, F0EH) ...........................................59 
8.41.  VERB – SET DIGITAL CONVERTER CONTROL 1 & CONTROL 2 (VERB ID=70DH, 70EH).............................................59 
8.42.  VERB – GET SUBSYSTEM ID [31:0] (VERB ID=F20H/F21H/F22H/F23H) ...................................................................60 
8.43.  VERB – SET SUBSYSTEM ID [31:0] (VERB ID=723H FOR [31:24], 722H FOR [23:16], 721H FOR [15:8], 720H FOR [7:0])
61 
8.44.  VERB – GET EAPD CONTROL (VERB ID=F0CH FOR GET).........................................................................................61 
8.45.  VERB – SET EAPD CONTROL (VERB ID=70CH FOR SET) ..........................................................................................62 
9.  ELECTRICAL CHARACTERISTICS...........................................................................................................................63 
9.1.  DC CHARACTERISTICS...............................................................................................................................................63 
9.1.1.  Absolute Maximum Ratings ..................................................................................................................................63 
High Definition Audio Codec with Embedded
Mono Class-D Speaker Amplifier
iv
Rev. 0.65




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