AD1882A
High Definition Audio Codec
Data Sheet
DSH-202011C
November 2009
2Conexant DSH-202011C
12/8/09
© 2009, Conexant Systems, Inc.
All Rights Reserved.
Information in this document is provided in connection with Conexant Systems, Inc. (“Conexant”) products. These materials are provided by
Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no responsibility for errors or
omissions in these materials. Conexant may make changes to this document at any time, without notice. Conexant advises all customers to
ensure that they have the latest version of this document and to verify, before placing orders, that information being relied on is current and
complete. Conexant makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or
incompatibilities arising from future changes to its specifications and product descriptions.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in
Conexant’s Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever.
THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE
AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR
PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR
OTHER INTELLECTUAL PROPERTY RIGHT. CONEXANT FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF
THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. CONEXANT SHALL NOT BE
LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST
REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
Conexant products are not intended for use in medical, lifesaving or life sustaining applications. Conexant customers using or selling Conexant
products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from such
improper use or sale.
The following are trademarks of Conexant Systems, Inc.: Conexant® and the Conexant C symbol. Product names or services listed in this
publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their
respective owners.
For additional disclaimer information, please consult Conexant’s Legal Information posted at www.conexant.com which is incorporated by
reference.
Conexant Lead-free products are China RoHS Compliant:
Reader Response: Conexant strives to produce quality documentation and welcomes your feedback. Please send comments and suggestions
to tech.pubs@conexant.com. For technical questions, contact your local Conexant sales office or field applications engineer.
Ordering Information
Revision History
Device Set Order ID Package Type Package Operating
Temperature
AD1882AJCPZ* QFN 48-Lead QFN, 7x7 mm 0 °C to 70 °C
AD1882AJCIZ* QFN 48-Lead QFN, 7x7 mm -20 °C to 85 °C
*Lead-free (Pb Free) and RoHS compliant
Revision Date Description
A February 27, 2009 Initial release
B November 30, 2009 Revision B release
C December 8, 2009 Revision C release
DSH-202011C Conexant 3
12/8/09
AD1882A
High Definition Audio Codec
The AD1882A audio codec and software provide superior HD audio quality that
exceeds Vista Premium performance. The AD1882A has six DACs and four ADCs,
two stereo headphone ports, C/LFE swapping, digital and analog PCBeep, and S/
PDIF output, making the AD1882A the right choice for desktop and notebook PCs
where performance is the primary consideration.
The jack retasking feature on this product supports various configurations, including
platforms for 5.1 on 5 or 3 jacks, and front-panel jack retasking.
The AD1882A is available in a 48-lead Pb-free lead frame chip scale package in both
reels and trays. See the Ordering Information table on the previous page
Optional Software Features
The AD1882A audio codec also supports the following additional software features:
Voice input enhancements: Andrea Electronics best-in-class noise reduction,
beam forming, and echo cancellation
Output enhancements: Sensaura/Sonic Focus, spreading/downmixing, MP3
refinement, adaptive dynamics, compressor/limiter, speaker/graphic EQ,
Voice Clarity/X-MatrixTM, AGC, UI tuning tools
DTS®, SRS®, Virage Logic's Sonic FocusTM
Functional Block Diagram
ADC0
ADC1
DAC1
Digital
PCBeep
HP
HP
Port F
Port G
MONO OUT
Port D
Port B
Port C
PCBeep
HD
Audio
Interface
DAC0
DAC2
Σ
Σ
Port E
CD IN
Σ
Σ
Σ
Σ
Σ
Σ
Port A
Digital
Microphone
DM_CLK
DM_DATA
S/PDIF Tx S/PDIF OUT
Distinguishing Features
Six 192 kHz, 95 dB DACs
– All independent sample rates,
8 kHz through 192 kHz
– 16-, 20-, and 24-bit PCM
resolution
– Selectable stereo mixer on
outputs
Four 192 kHz, 90 dB ADCs
– Simultaneous record of up to 2
stereo channels
– All independent sample rates,
8 kHz through 192 kHz
– 16-, 20-, and 24-bit resolution
S/PDIF Output
– Supports all sample rates
44.1 kHz through 192 kHz
– 16-, 20-, and 24-bit data widths;
PCM and AC3 formats
– Digital PCM gain control
Dedicated auxiliary pins
– Stereo CD input w/GND sense
– Mono out pin for internal
speaker with EAPD support
– Analog PCBeep input pin
Stereo digital microphone
– Two 192 kHz digital microphone
channels
– Supports 1 or 2 microphones on
1 pin
– Selectable bit clock rates of
1.5 MHz, 2.0 MHz, and 3.0 MHz
All sample rates, 8 kHz through
192 kHz
– 16-, 20-, and 24-bit resolution
Microsoft Vista Premium® logo for
notebook and desktop
Impedance and presence detection
on all jack pins
2 general-purpose digital I/O
(GPIO) pins
Advanced power management
modes
EAPD control for internal speakers
3.3 V analog and digital supply
voltage
1.5 V and 3.3 V HD Audio link
signaling
Very low power consumption in D3
state
4Conexant DSH-202011C
12/8/09
DSH-202011C Conexant 5
12/8/09
Contents
Figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1 High Definition Audio Codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 Jack Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2.1 HD Audio Link Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.2.2 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.2.3 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.3 Pin Configuration and Functional Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.4 Digital Microphone Interface Timing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1.5 HD Audio Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
1.6 HD Audio Widgets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
1.7 Default Configuration Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1.8 Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
AD1882A Data Sheet
6Conexant DSH-202011C
12/8/09
DSH-202011C Conexant 7
12/8/09 Conexant Proprietary and Confidential
Figures
Figure 1. AD1882A Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 2. Uniplex Microphone Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3. Multiplex Microphone Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 4. Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figures AD1882A Data Sheet
8Conexant DSH-202011C
Conexant Proprietary and Confidential 12/8/09
DSH-202011C Conexant 9
12/8/09 Conexant Proprietary and Confidential
Tables
Table 1. Typical Desktop Configuration with Discreet Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 2. Typical Desktop Configuration with 5.1 on 3 Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 4. Typical Notebook Configuration with Digital Microphone . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 5. Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3. Typical Notebook Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 6. Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 7. General Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 8. Power-Down States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 9. Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 10. Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 11. Microphone Timing Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 12. Root and Function Node Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 13. SubSystem ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 14. HD Audio Widgets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 15. Default Configuration Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Tables AD1882A Data Sheet
10 Conexant DSH-202011C
Conexant Proprietary and Confidential 12/8/09
DSH-202011C Conexant 11
12/8/09
1
High Definition Audio Codec
This data sheet provides a general overview of the AD1882A codec’s architecture and
functionality. Additional information on the AD1882A is available in the AD1882A
Programmers Reference Manual. Please contact your local Conexant sales
representative for more information.
1.1 Jack Configuration
Use the guidelines shown in Tables 1 through 4 when selecting ports for particular
functions.
Table 1. Typical Desktop Configuration with Discreet Jacks
Port Function
Port A Front Panel Headphone
Port B Front Panel Microphone
Port C Rear Panel Line-In
Port D Rear Panel Line-Out/Headphone
Port E Rear Panel Microphone
Port F Rear Panel Surround
Port G Rear Panel C/LFE
Table 2. Typical Desktop Configuration with 5.1 on 3 Jacks
Port Function
Port A Front Panel Headphone
Port B Front Panel Microphone
Port C Rear Panel Line-In/Surround
Port D Rear Panel Line-Out/Headphone
Port E Rear Panel Microphone / C/LFE
12 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
1.2 Specifications
Table 3. Typical Notebook Configuration
Port Function
Port A Headphone
Port B Microphone
Port C Internal Microphone
Port D Internal Stereo Speakers
Port E Docking Station Line-In/Microphone
Table 4. Typical Notebook Configuration with Digital Microphone
Port Function
Port A Headphone
Port B Microphone
Digital Microphone Internal Microphone
Port D Internal Stereo Speakers
Port E Docking Station Line-In/Microphone
Table 5. Test Conditions
Parameter Test Condition
Temperature
Digital Supply
Analog Supply
MIC_BIAS_IN (via Low-Pass Filter)
Sample Rate fS
Input Signal (Frequency Sine Wave)
Amplitude for THD + N
Analog Output Pass Band
25°C
3.3 V
3.3 V
5.0 V
48 kHz
1008 Hz
–3.0 dB Full Scale
20 Hz to 20 kHz
DAC 10 kΩ Output Load: Line Out Tests
32 Ω Output Load: Headphone Tests
ADC 0 dB Gain
DSH-202011C Conexant 13
12/8/09
AD1882A Data Sheet High Definition Audio Codec
Table 6. Performance
Parameter Min Typ Max Unit
Line-Out Drive (10 kΩ Loads—DAC to Pin)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in Ref to fS A-Weighted)
Signal-to-Noise Ratio
–85
95
95
dB
dB
dB
Headphone Drive (32 Ω Loads—DAC to Pin)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in Ref to fS A-Weighted)
Signal-to-Noise Ratio
–83
95
95
dB
dB
dB
Input Ports (Pin to ADC, Mic Boost = 0 dB)
Total Harmonic Distortion (THD + N)
Dynamic Range (–60 dB in Ref to fS A-Weighted)
Signal-to-Noise Ratio
–81
90
90
dB
dB
dB
Table 7. General Specifications (1 of 4)
Parameter Min Typ Max Unit
Digital Decimation and Interpolation Filters—fS = 8 kHz to 96 kHz(1)
Pass Band 0 0.4 fSHz
Pass-Band Ripple ±0.005 dB
Stop Band 0.6 fSHz
Stop-Band Rejection –100 dB
Group Delay +20 1/fS
Group Delay Variation Over Pass Band 0 µs
Analog-to-Digital Converters
Resolution 24 Bits
Gain Error (Full-Scale Span Relative to Nominal Input Voltage)(2) ±10 %
Interchannel Gain Mismatch (Difference of Gain Errors) ±0.5 dB
ADC Offset Error(1) ±5mV
ADC Crosstalk(1)
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L) –85 dB
Line Inputs to Other –100 –80 dB
14 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
Digital to Analog Converters
Resolution 24 Bits
Gain Error (Full-Scale Span Relative to Nominal Input Voltage)(1) ±10 %
Interchannel Gain Mismatch (Difference of Gain Errors) ±0.5 dB
DAC Crosstalk (Input L, Zero R, Read R_OUT; Input R, Zero L, Read L_OUT)(1) –95 dB
DAC Volumes
Step Size (DAC-0, DAC-1, DAC-2) 1.5 dB
Output Gain/Attenuation Range –58.5 0 dB
Mute Attenuation of 0 dB Fundamental(1) –80 dB
ADC Volumes
Step Size (ADCSEL-0, ADCSEL-1) 1.5 dB
PGA Gain/Attenuation Range –58.5 +22.5 dB
Mute Attenuation of 0 dB Fundamental(1) –80 dB
Analog Mixer
Signal-to-Noise Ratio (SNR) Input to Output 95 dB
Step Size: All Mixer Inputs 1.5 dB
Input Gain/Attenuation Range: All Mixer Inputs –34.5 +12.0 dB
Analog Line Level Outputs
Full-Scale Output Voltage 1.0 1.0 Vrms(3)
Ports C, E, F, and G Mono Out 2.83 V p-p
Output Impedance(1) 300 Ω
External Load Impedance(1) 10 kΩ
Output Capacitance(1) 15 pF
External Load Capacitance(1) 1000 pF
Table 7. General Specifications (2 of 4)
Parameter Min Typ Max Unit
DSH-202011C Conexant 15
12/8/09
AD1882A Data Sheet High Definition Audio Codec
Analog HP Drive Outputs
Full-Scale Output Voltage 1.0 Vrms(3)
Ports A and D 2.83 V p-p
Output Impedance(1) 0.5 Ω
External Load Impedance(1) 32 Ω
Output Capacitance(1) 15 pF
External Load Capacitance(1) 1000 pF
Analog Inputs
CD, Port D (When Used as Input) 1
2.83
Vrms(3)
V p-p
Microphone Boost Amplifier, Ports B, C, or E
(When Used as Inputs)
Boost = 0 dB 1
2.83
Vrms(3)
V p-p
Boost = 10 dB 0.316
0.894
Vrms(3)
V p-p
Boost = 20 dB 0.1
0.283
Vrms(3)
V p-p
Boost = 30 dB 0.032
0.089
Vrms(3)
V p-p
Input Impedance(1) 20 kΩ
Input Capacitance(1) 57.5 pF
Digital GPIO Pins: GPIO_0, GPIO_1/EAPD
Input Signal High (VIH)DVGPIO ×0.60 DVGPIO V
Input Signal Low (VIL)0DV
GIPO × 0.24 V
Input Leakage Current (Signal High, (IIH) 150 nA
Input Leakage Current (Signal Low, (IIL)50μA
Output Signal High (VOH)I
OUT = –500 μADV
IO × 0.72 DVGPIO V
Output Signal Low (VOL)I
OUT = +1500 μA0DV
GPIO ×0.10 V
DM_CLK
Output Signal High (VOH)I
OUT = –500 μADV
IO × 0.72 DVGPIO V
Output Signal Low (VOL)I
OUT = +1500 μA0DV
GPIO × 0.10 V
Table 7. General Specifications (3 of 4)
Parameter Min Typ Max Unit
16 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
DM_DATA
Input Signal High (VIH)DV
GPIO ×0.60 DVGPIO V
Input Signal Low (VIL)0DV
GIPO × 0.24 V
Input Leakage Current (Signal High, (IIH) 150 nA
Input Leakage Current (Signal Low, (IIL)50μA
S/PDIF_OUT
Output Signal High (VOH)I
OUT = –500 μADV
GPIO ×0.72 DVGPIO V
Output Signal Low (VOL)I
OUT = +1500 μA0DV
GPIO × 0.10 V
Power Supply
Analog (AVDD) 3.3 V ± 5%
Power Supply Range
Power Dissipation
Supply Current
3.13 3.30
116
35
3.46 V
mW
mA
Digital (DVDD) 3.3 V ± 10%
Power Supply Range
Power Dissipation
Supply Current
2.97 3.30
162
49
3.63 V
mW
mA
Digital I/O (DVIO) 3.3 V ± 10%
Power Supply Range
Power Dissipation
Supply Current
2.97 3.30
3.96
1.20
3.63 V
mW
mA
Digital I/O (DVIO) 1.5 V ± 5.5%
Power Supply Range
Power Dissipation
Supply Current
2.97 3.30
3.96
1.20
3.63 V
mW
mA
Digital I/O (DVGPIO) 3.3 V ± 10%
Power Supply Range
Power Dissipation
Supply Current
2.97 3.30
3.63
1.10
3.63 V
mW
mA
Power Supply Rejection (100 mV p-p Signal @ 1 kHz)(1) 80 dB
FOOTNOTES:
(1) Guaranteed but not tested.
(2) Measurements reflect ADC.
(3) RMS values assume sine wave input.
Table 7. General Specifications (4 of 4)
Parameter Min Typ Max Unit
DSH-202011C Conexant 17
12/8/09
AD1882A Data Sheet High Definition Audio Codec
1.2.1 HD Audio Link Specifications
HD Audio signals comply with the High Definition Audio specifications. Please refer to
these specifications at www.intel.com/standards/hdaudio.
Table 8. Power-Down States
Parameter IDVDD Typ IAVDD Typ Unit
Function Node In D0, All Nodes Active 49 35 mA
Function Node in D3 16 0.7 mA
Codec in RESET 33mA
Individual block power savings
DAC Pair Powered Down Saves (Each)
ADC Pair Powered Down Saves (Each)
Mixer Power Control (and Associated Amps) Saves
MIC_BIAS Powered Down Saves(1)
6
5
0
0
6
4.4
3
1.0
mA
mA
mA
mA
FOOTNOTES:
(1) Powering down the MIC_BIAS powers down all port MIC_BIAS pins. This disables all microphone bias circuits set to 100% or 50%,
setting them to the high-Z state.
18 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
1.2.2 Absolute Maximum Ratings
Stresses greater than those listed below may cause permanent damage to the device.
This is a stress rating only; functional operation of the device at these or any other
conditions above those indicated in the operational section of this specification is not
implied. Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
1.2.3 Environmental Conditions
Ambient Temperature Rating:
TAMB = TCASE – (PD × θCA)
TCASE = case temperature in °C
PD = power dissipation in W
θCA = thermal resistance (case-to-ambient)
θJA = thermal resistance (junction-to-ambient)
θJC = thermal resistance (junction-to-case)
All measurements per EIA-JESD51 with 2S2P test board per EIA-JESD51-7.
Table 9. Absolute Maximum Ratings
Power Supplies Rating
Digital (DVDD) –0.30 V to +3.65 V
Digital I/O (DVIO) –0.30 V to +3.65 V
Digital I/O (DVGPIO) –0.30 V to +3.65 V
Analog (AVDD) –0.30 V to +3.65 V
Input Current (Except Supply Pins) ±10.0 mA
Analog Input Voltage (Signal Pins) –0.30 V to AVDD + 0.3 V
Digital Input Voltage (Signal Pins) –0.30 V to DVIO + 0.3 V
Ambient Temperature (Operating)
Commercial (AD1882AJCPZ)
Extended Temperature (AD1882AJCIZ)
0 °C to +70 °C
-20°C to +85°C
Storage Temperature –65 °C to +150 °C
CAUTION
Electrostatic Discharge Device (ESD)
Charged devices and circuit boards can discharge without detection.
Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy
ESD. Therefore, proper ESD precautions should be taken to avoid
performance degradation or loss of functionality.
Package θJA θJC θCA Unit
QFN 47 15 32 °C/W
DSH-202011C Conexant 19
12/8/09
AD1882A Data Sheet High Definition Audio Codec
1.3 Pin Configuration and Functional Descriptions
Figure 1. AD1882A Pinout
1
2
3
4
5
6
7
8
9
10
11
12
34
33
36
35
25
26
27
28
29
30
31
32
AD1882AJCPZ
TOP VIEW
(Not To Scale)
SDATA_OUT
BIT_CLK
SDATA_IN
SYNC
PCBEEP
PORT-D_R
PORT-D_L
SENSE_B/SRC_A
MIC_BIAS_IN
MIC_BIAS-B
MIC_BIAS-C
MIC_BIAS-E
AVDD
AVSS
VREF_FLT
RESERVED (NC)
RESERVED (NC)
DV CORE
DVDD
DVSS
DVIO
DVGPIO
GPIO_0
13 14 15 16 17 18 19 20 21 22 23 24
SENSE_A/SRC_B
PORT-E_L
PORT-E_R
PORT-F_R
PORT-F_L
CD_L
CD_GND
CD_R
PORT-B_L
PORT-B_R
PORT-C_R
PORT-C_L
PORT-G_L
PORT-G_R
PORT-A_L
PORT-A_R
AVDD
AVSS
DM_CLK
DM_DATA
S/PDIF-OUT
GPIO_1/EAPD
RESERVED (NC)
MONO_OUT
48 47 46 45 44 43 42 41 40 39 38 37
RESET
20 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
Table 10. Pin Descriptions (1 of 2)
Mnemonic Pin No. Function Description
Digital Interface
SDATA_OUT 5 I Link Serial Data Output. AD1882A input stream. Clocked on both edges of the
BIT_CLK.
BIT_CLK 6 I Link Bit Clock. 24.000 MHz serial data clock.
SDATA_IN 8 I/O Link Serial Data Input. AD1882A output stream Clocked only on one edge of
BIT_CLK.
SYNC 10 I Link Frame Sync.
RESET 11 I Link Reset. AD1882A master hardware reset.
Digital I/O
GPIO_0
GPIO_1/EAPD
SPDIF_OUT
2
47
48
I/O
I/O
O
General-Purpose Input/Output Pin. Digital signal used to control external circuitry.
General-Purpose Input/Output Pin/EAPD Pin. Digital signal used to control external
circuitry. Defaults to high-Z. When used as EAPD: high-Z = amp-on, DVSS = amp off.
S/PDIF_OUT. Supports S/PDIF output.
DM_DATA 45 I Digital Microphone Data Input Support for two digital microphones.
DM-CLK 46 O Digital Microphone Clock Output.
JACK SENSE and EAPD
SENSE_A/SRC_B
SENSE_B/SRC_A
13
34
I/O
I/O
JACK SENSE A-D Input/Sense B Drive.
JACK SENSE E-H Input/Sense A Drive.
Analog I/O
PCBEEP 12 LI Monaural Input from System for Analog PCBeep.
PORT-E_L 14 LI, MIC, LO,
SWAP
Auxiliary Input/Output Left Channel.
PORT-E_R 15 LI, MIC, LO,
SWAP
Auxiliary Input/Output Right Channel.
PORT-F_L 16 I/O Auxiliary Input/Output Left Channel.
PORT-F_R 17 I/O Auxiliary Input/Output Right Channel.
CD_L 18 LI CD Audio Left Channel.
CD_GND 19 LI CD Audio Analog Ground Reference (for Differential CD Input). Must be connected
to AGND via 0.1 mF capacitor if not in use as CD_GND.
CD_R 20 LI CD Audio Right Channel.
PORT-B_L 21 LI, MIC, HP, LO Front Panel Stereo MIC/Line-In.
PORT-B_R 22 LI, MIC, HP, LO Front Panel Stereo MIC/Line-In.
PORT-C_L 23 LI, MIC, LO Rear Panel Stereo MIC/Line-In.
PORT-C_R 24 LI, MIC, LO Rear Panel Stereo MIC/Line-In.
PORT-D_L 35 LI, HP, LO Rear Panel Headphone/Line-Out.
PORT-D_R 36 LI, HP, LO Rear Panel Headphone/Line-Out.
DSH-202011C Conexant 21
12/8/09
AD1882A Data Sheet High Definition Audio Codec
Analog I/O (continued)
PORT-A_L 39 LI, MIC, HP, LO Front Panel Headphone/Line-Out.
MONO_OUT 40 LO Monaural Output to Internal Speaker or Telephony Subsystem Speakerphone.
PORT-A_R 41 LI, MIC, HP, LO Front Panel Headphone/Line-Out.
PORT-G_L 43 LO, SWAP Rear Panel C/LFE Output.
PORT-G_R 44 LO, SWAP Rear Panel C/LFE Output.
Filter/Reference
MIC_BIAS-B
MIC_BIAS-C
MIC_BIAS-E
28
29
31
O
O
O
Switchable Microphone Bias. For use with Port B (Pins 21, 22).
Switchable Microphone Bias. For use with Port C (Pins 23, 24).
Switchable Microphone Bias. For use with Port E (Pins 14, 15).
DVCORE 1O CAUTION: DO NOT APPLY 3.3 V TO THIS PIN!
Filter connection for internal core voltage regulator. This pin must be
connected to filter caps: 10 μF, 1.0 μF, and 0.1 μF connected in parallel
between Pin 1 and DVSS (Pin 4).D
VREF_FLT 27 O Voltage Reference Filter. This pin must be connected to filter caps: 1.0 μF and
0.1 μF connected in parallel between Pin 27 and AVSS (Pins 26, 42).
Power and Ground
DVIO 3.3 V + 10% or
DVIO 1.5 V + 5.5%
4 I Connect to the I/O Voltage Used for the HD Audio Controller Signals.
DVGPIO 3 I Connect to 3.3 V digital supply to power the GPIO and S/PDIF pins.
DVSS 7 I Digital Supply Return (Ground).
DVDD (3.3 V) 9 I Digital Supply Voltage 3.3 V. This is regulated down to DVCORE on Pin 1 to supply
the internal digital core internal to the AD1882A.
AVDD (3.3 V) 25, 38 I CAUTION: DO NOT APPLY 5.0 V TO THESE PINS!
Analog supply voltage 3.3 V ONLY.
Note: AVDD supplies should be well regulated and filtered as supply noise degrades
audio performance.
MIC_BIAS_IN 33 I Source Power for Microphone Bias Boost Circuitry. Connect this pin to 5.0 V via a
low-pass filter. When connected this way, the AD1882A is capable of providing 3.9 V
as a microphone bias to all of the MIC_BIAS pins. If 5 V is not available, connect this
pin to 3.3 V (AVDD) via a low-pass filter.
AVSS 26, 42 I Analog Supply Return (Ground). AVSS should be connected to DVSS using a
conductive trace under, or close to, the AD1882A.
GENERAL NOTES:
1. The symbols used in this table are defined as follows:
I = Input
O = Output
LI = Line level input
LO = Line level output
HP = Output capable of driving headphone load
MIC = Input supports microphones with MIC bias and boost amplifier
SWAP = Outputs can swap L/R channels (typically used to support C/LFE or shared C/LFE function).
Table 10. Pin Descriptions (2 of 2)
Mnemonic Pin No. Function Description
22 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
1.4 Digital Microphone Interface Timing Specifications
The digital microphone interface can support one or two digital microphones using two
or three codec pins. Both uniplex (one microphone per data pin) and multiplex (two
microphones sharing the same data pin) are supported. The timing for these
configurations are shown in Figures 2 and 3. The interface can generate a microphone
clock at 1.5 MHz, 2.0 MHz, or 3.0 MHz to suit quality and power requirements.
Figure 2. Uniplex Microphone Timing
Figure 3. Multiplex Microphone Timing
Table 11. Microphone Timing Parameters
Parameter Min Typ Max Unit
Timing Requirements
t0DM_CLK (1.5 MHz) Period
Duty Cycle
667
50/50
ns
%
t0DM_CLK (2.0 MHz) Period
Duty Cycle
500
50/50
ns
%
t0DM_CLK (3.0 MHz) Period
Duty Cycle
333
50/50
ns
%
t1DM_CLK Rise Time 5 ns
t2DM_CLK Fall Time 5 ns
t3Data Setup to DM_CLK Edge 100 ns
t4Data Hold from DM_CLK Edge 5 ns
DM_CLK
DM_1/2
t0
t1t2
DATA VALID
t3t4
DM_CLK
t1t2
t3
DM_DATA
t0
LEFT DATA VALID RIGHT DATA VALID LEFT DATA VALID
t4t3t4
DSH-202011C Conexant 23
12/8/09
AD1882A Data Sheet High Definition Audio Codec
1.5 HD Audio Parameters
The SSID value is set on codec power-up only. SSID is not reset by link or soft reset in
order to preserve modifications by BIOS control.
Table 12. Root and Function Node Parameters
Node ID Name Vendor ID
00 01
Revision
ID
02(1)
03
Sub Node
Count
04
Func.
Group
Type
05
Audio F.G.
Caps
08
GPIO
Caps
11
00 ROOT 11D4 882A 0010 0100 0001 0001
01 FUNCTION 0002 003B 0000 0001 0001 0C0C 4000 0002
FOOTNOTES:
(1) Subject to change with silicon stepping.
Table 13. SubSystem ID
Node ID Name Value 31:16
SSID
15:8
SKU
7:0
Asm ID
01 FUNCTION BFD20000 BFD2 00 00
GENERAL NOTES:
1. The default SSID is overwritten by platform BIOS after power on. It is preserved across HD Audio link reset and verb reset.
24 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
1.6 HD Audio Widgets
In Table 14 below, node IDs that are not shown are reserved for future use.
Table 14. HD Audio Widgets (1 of 2)
Node ID Name Type ID Type Description
00 ROOT x Root Device Identification
01 FUNCTION x Function Designates this Device as an Audio Codec
02 S/PDIF DAC 0 Audio Output S/PDIF Digital Stream Output Interface
03 DAC_0 0 Audio Output Headphone/Surround Side (7.1) Channel Digital/Audio Converters
04 DAC_1 0 Audio Output Stereo Front Channel Digital/Audio Converters
05 DAC_2 0 Audio Output Stereo C/LFE Channel Digital/Audio Converters
08 ADC_0 1 Audio Input Stereo Record Channel 1 Audio/Digital Converters
09 ADC_1 1 Audio Input Stereo Record Channel 2 Audio/Digital Converters
0C ADC Selector 0 3 Audio Selector Selects and Amplifies/Attenuates the Input to ADC0
0D ADC Selector 1 3 Audio Selector Selects and Amplifies/Attenuates the Input to ADC1
10 Digital Beep 7 Beep Generator Internal Digital PCBeep Signal
11 Port A (Headphone) 4 Pin Complex Front Panel Headphone/Microphone Jack
12 Port D (Front L/R) 4 Pin Complex Rear Panel Front/Headphone Jack
13 Mono Out 4 Pin Complex Monaural Output Pin (Internal Speakers or Telephony System)
14 Port B (Front Mic) 4 Pin Complex Front Panel Microphone/Headphone Jack
15 Port C (Line In) 4 Pin Complex Rear Panel Line-In Jack
16 Port F (Surr Back) 4 Pin Complex Rear Panel Surround-Rear (5.1) Jack
17 Port E (Rear Mic) 4 Pin Complex Rear Panel Mic Jack
18 CD In 4 Pin Complex Analog CD Input
19 Mixer Power Down 5 Power Widget Powers Down the Analog Mixer and Associated Amps
1A Analog PCBeep 4 Pin Complex External Analog PCBeep Signal Input
1B S/PDIF Out 4 Pin Complex S/PDIF Output Pin
1E Mono Out Mixer 2 Audio Mixer Selects Which Source Drives the Mono Out Signal
1F Digital Microphone 4 Pin Complex Digital Microphone Interface
20 Analog Mixer 2 Audio Mixer Mixes Individually Gainable Analog Inputs
DSH-202011C Conexant 25
12/8/09
AD1882A Data Sheet High Definition Audio Codec
21 Mixer Output Atten 3 Audio Selector Attenuates the Mixer Output to Drive the Port Mixers
22 Port A Mixer 2 Audio Mixer Mixes the Port A Selected DAC and Mixer Output Amps to Drive Port A
23 VREF Power Down F Vendor Defined Powers Down the Internal and External VREF Circuitry
24 Port G (C/LFE) 4 Pin Complex Rear Panel C/LFE Jack
26 Port E Mixer 2 Audio Mixer Mixes DAC1 and Mixer Output Amps to Drive Port E
27 Port G Mixer 2 Audio Mixer Mixes DAC1 and Mixer Output Amps to Drive Port G
29 Port D Mixer 2 Audio Mixer Mixes DAC0 and Mixer Output Amps to Drive Port D
2A Port F Mixer 2 Audio Mixer Mixes DAC2 and Mixer Output Amps to Drive Port F
2C Port C Mixer 2 Audio Mixer Mixes the Port C Selected DAC and Mixer Output Amps to Drive Port C
2D Stereo Mix Down 2 Audio Mixer Mixes the Stereo L/R Channels to Drive Mono Output
2F BIAS Power Down F Vendor Defined Powers Down the Internal MIC_BIAS_IN and all MIC_BIAS Pins
37 Port A Out Selector 3 Audio Selector Selects the Port A DAC (0, 1)
39 Port B Boost 3 Audio Selector Microphone Boost Amp for Port B
3A Port C Boost 3 Audio Selector Microphone Boost Amp for Port C
3C Port E Boost 3 Audio Selector Microphone Boost Amp for Port E
Table 14. HD Audio Widgets (2 of 2)
Node ID Name Type ID Type Description
26 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
1.7 Default Configuration Bytes
In Table 15, default configuration values are set on codec power-up only. Default
configuration values are not reset by link or soft reset to preserve modifications by
BIOS control.
Table 15. Default Configuration Bytes
Name Value
31:30 29:28 27:24 23:20 19:16 15:12 87:4 3:0
Connectivity
Location
Def. Device Conn Type Color
Misc.
Def Assn Sequence
Chasis Position JD Over
Ride
Port A (Headphone) 0x0221 401F Jack External Front HP Out 1/8” Jack Green 0 1 F
Port D (Front L/R) 0x0101 4010 Jack External Rear Line Out 1/8” Jack Green 0 1 0
Mono Out 0x9017 01F0 Fixed Internal N/A Speaker Other
Analog
Unknown 1 F 0
Port B (Front Mic) 0x02A1 90F0 Jack External Front Mic In 1/8” Jack Pink 0 F 0
Port C (Line In) 0x0181 3021 Jack External Rear Line In 1/8” Jack Blue 0 2 1
Port F (Surr Back) 0x0101 1012 Jack External Rear Line Out 1/8” Jack Black 0 1 2
Port E (Rear Mic) 0x01A1 9020 Jack External Rear Mic In 1/8” Jack Pink 0 2 0
CD IN 0x9933 012E Fixed Internal Special 3 CD ATAPI Unknown 1 2 E
Analog PCBeep 0x90F7 01F0 Fixed Internal N/A Other Other
Analog
Unknown 1 F 0
S/PDIF Out 0x0145 11F0 Jack External Rear SPDIF Out Optical Black 1 F 0
Digital Microphone 0x97A6 09F0 Fixed Internal Special 1 Mic In Other Digital Unknown 1 F 0
Port G (C/LFE) 0x0101 6011 Jack External Rear Line Out 1/8” Jack Orange 0 1 1
DSH-202011C Conexant 27
12/8/09
AD1882A Data Sheet High Definition Audio Codec
1.8 Package Dimensions
Figure 4 provides the package dimensions, shown in millimeters
Figure 4. Package Dimensions
PIN 1
INDICATOR
TOP
VIEW 6.75
BSC SQ
7.00
BSC SQ
1
48
12
13
37
36
24
25
5.25
5.10 SQ
4.95
0.50
0.40
0.30
0.30
0.23
0.18
0.50 BSC
12° MAX
0.20 REF
0.80 MAX
0.65 TYP
1.00
0.85
0.80
5.50
REF
0.05 MAX
0.02 NOM
0.60 MAX
0.60 MAX PIN 1
INDICATOR
COPLANARITY
0.08
SEATING
PLANE
0.25 MIN
EXPOSED
PAD
(BOTTOM VIEW)
COMPLIANT TO JEDEC STANDARDS MO-220-VKKD-2
48-Lead QFN Package
7 x 7 mm
Dimensions shown in millimeters
28 Conexant DSH-202011C
12/8/09
High Definition Audio Codec AD1882A Data Sheet
