Page 1
www.BDTIC.com/ADI
HD Audio SoundMAX® Codec
FEATURES
2 DAC channels: 16-, 20-, or 24-bit
2 ADC channels: 16- or 20-bit
HD audio sample rates
8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz,
44.1 kHz,
Greater than 90 dB dynamic range
S/PDIF output: 32 kHz, 44.1 kHz or 48 kHz, 16- or 24-bit
Digital beep and analog PC beep pass-through
Integrated headphone amplifiers on two ports
Port retasking
Selectable microphone and line inputs
Full analog mixer
Legacy inputs: CD and auxiliary inputs
External amplifier power-down (EAPD)
48-pin, Pb-free LQFP
48 kHz
GPIO
JACK
SENSE
HD AUDIO INTERFACE
SELECTOR
EQ
PC BEEP
GPIO
SENSE
PCM/AC3
S/PDIF TX
PCM
Σ-Δ DAC
DIGITAL
PC BEEP
FUNCTIONAL BLOCK DIAGRAM
S/PDIF_OUT
PC BEEP
G
M
SELECTOR
GA
GA GA
AD1981HD
ENHANCED FEATURES
No AFILT pins, results in BOM savings
5.0 V AV
Jack-sensing autoconfiguration options
Mute line output and monaural output (MONO_OUT)
Mute MONO_OUT when a device is in the line out jack
Selectable trip level: high/low supports all jack types
Peripheral identification/enumeration
Jack event/presence detection using SENSE or GPIO pins
Microphone to MONO_OUT for speakerphone applications
Advanced power management modes
4 software-controlled microphone bias pins
Up to 30 dB microphone boost
4 GPIOs—external control or traditional jack sense
GA
GA
M
M
Σ
M
MM
MM
GA
GA
supply, 3.3 V DVDD supply
DD
when headphones are used
AV
DD
AV
SS
PC BEEP
GAM
Σ
SELECTOR
GAM HP
SELECTOR
MIC
BOOST
MIC
BOOST
Z
HP
Z
Z
BIAS
GAM
SELECTOR
BIAS
GAM
SELECTOR
5V
RESET
MONO_OUT
PORT-A
HEADPHONE
MIC_BIAS-D
Z
PORT-D
LINE_OUT
MIC_BIAS-C
PORT-C
LINE_IN
MIC
BIAS
GAM
PCM/FLOAT32
Σ-Δ ADC
M G
SELECTOR
AUX
PORT-E
DIFF
AMP
CD_R
CD_GND
M
M
CD_L
SELECTOR
BOOST
MIC
BIAS
BOOST
Figure 1.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 © 2005 Analog Devices, Inc. All rights reserved.
Z
Z
Z
MIC_BIAS-F
PORT-F
REAR MIC
MIC_BIAS-B
PORT-B
FRONT MIC
04321-005
Page 2
AD1981HD
www.BDTIC.com/ADI
TABLE OF CONTENTS
Functional Block Diagram Details................................................. 3
Specifications..................................................................................... 4
Absolute Maximum Ratings............................................................ 7
Environmental Conditions.......................................................... 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
REVISION HISTORY
6/05—Initial Version: Revision 0
HD Audio Codec Information ..................................................... 10
Jack Presence Detection................................................................. 15
HD Audio Style Jack Presence Detection ............................... 15
Classic Jack Presence Detection............................................... 15
Outline Dimensions ....................................................................... 16
Ordering Guide .......................................................................... 16
Rev. 0 | Page 2 of 16
Page 3
AD1981HD
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FUNCTIONAL BLOCK DIAGRAM DETAILS
OUTPUT_EN
NID: 0D
MIC_BIAS-C
PORT-C
LINE_IN
NID: 09
Z
Z
BIAS_EN
–46.5dB
BIAS_SEL
MIC
BIAS
OUTPUT_EN
0dB, 10dB, 20dB, 30dB
TO +3dB
GAM
2:1
BOOST
SELECTOR
OUTPUT_EN
MIC_BIAS-F
PORT-F
REAR MIC
NID: 18
Z
Z
BIAS_EN
–46.5dB
BIAS_SEL
TO +3dB
MIC
GAM
BIAS
2:1
0dB, 10dB, 20dB, 30dB
OUTPUT_EN
BOOST
SELECTOR
OUTPUT_EN
NID: 1F
MIC_BIAS-B
PORT-B
FRONT MIC
NID: 08
Z
BIAS_EN
0dB, 10dB, 20dB, 30dB
BIAS_SEL
M
BOOST
MIC
BIAS
M
NID: 1E
Σ
NID: 0C
M
GA
NID: 12
M
M
M
M
GA
NID: 1C
GA
NID: 1D
GA
NID: 13
GA
NID: 1B
–34.5 TO +12dB
8:1
NID: 19
SELECTOR
CD
DIFF
AMP
CD_L
CD_GND
CD_R
NID: 17
AUX
PORT-E
MIC_BIAS-D
PORT-D
BIAS_EN
–46.5dB
TO +3dB
GA
Z
HP
GAM
2:1
M
M
PC BEEP
LINE_OUT
OUTPUT_EN
HP_EN
BOOST
SELECTOR
–34.5 TO +12dB
NID: 0E
M
G
2:1
0dB, 10dB, 20dB, 30dB
Σ
0dB TO –45dB
SELECTOR
MONO_OUT
NID: 07
RESET
5V
PC BEEP
SS
DD
AV
AV
–46.5dB
TO +3dB
GAM
Σ
NID: 0F
6:1
NID: 0B
SELECTOR
PORT-A
HEADPHONE
NID: 06
HP
GAM
2:1
NID: 0A
HP_EN
SELECTOR
–46.5dB TO +3dB
S/PDIF_OUT
NID: 05
Z
BIAS_SEL
MIC
BIAS
NID: 1A
GA
NID: 11
DIGITAL
PC BEEP
NID: 16
RESET
NID: 10
PC BEEP IN
HD AUDIO INTERFACE
BIT_CLK
48kHz, 24-BIT
PCM/AC3
GPIO_3
GPIO_2
GPIO_1/JS_0
GPIO_0/JS_1
SENSE_A/SRC_B
SENSE_B/SRC_A
GPIO
NID: 01
JACK
SENSE
S/PDIF TX
48kHz, 24-BIT
PCM
2:1
SELECTOR
NID: 02
Σ-Δ DAC
EQ
NID: 03
SYNC
SDATA_IN
SDATA_OUT
Figure 2.
Rev. 0 | Page 3 of 16
M G
NID: 15
NID: 04
3.3V
SS
DD
DV
DV
0dB TO 22.5dB
Σ-Δ ADC
48kHz, 20-BIT
PCM/FLOAT32
04321-001
Page 4
AD1981HD
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SPECIFICATIONS
Test conditions, unless otherwise noted.
Table 1. Test Conditions
Parameter Typ Unit
TEMPERATURE 25 °C
DIGITAL SUPPLY (DVDD) 3.3 ±10% V
ANALOG SUPPLY (AVDD) 5.0 ±10% V
SAMPLE RATE (FS) 48 kHz
INPUT SIGNAL 1.0 kHz
ANALOG OUTPUT PASS BAND 20 to 20,000 Hz
V
IH
V
IL
V
IH
V
IL
2.0 V
0.8 V
2.4 V
0.6 V
DAC Test Con diti ons
rated
Calib
Output −3 dB relative to full scale
10 kΩ output load, Ports C, D, F, and mono
32 Ω output load, Port A
ADC Test Conditions
Calib
rated
0 dB PGA gain
Input −3.0 dB relative to full scale
Input sourced on Port B, 0 dB boost
Table 2. Analog Input
Parameter Min Typ Max Unit
PORTS B, C, D, E: 0 dB 1 V rms
2.83 V p-p
PORTS B, C, D, E: 30 dB 0.032 V rms
0.089 V p-p
PORTS B, C, D, E: 20 dB 0.1 V rms
0.283 V p-p
PORTS B, C, D, E: 10 dB 0.316 V rms
0.894 V p-p
PORT F, CD IN 1 V rms
2.83 V p-p
INPUT IMPEDANCE
INPUT CAPACITANCE 5 7.5 pF
1
RMS values assume sine wave input.
2
Guaranteed by design; not production tested.
2
20 kΩ
1
Table 3. Master Volume
Parameter Min Typ Max Unit
STEP SIZE (Ports A, B, C, D, E, MONO_OUT) 1.5 dB
OUTPUT GAIN RANGE –46.5 +3 dB
MUTE ATTENUATION OF 0 dB FUNDAMENTAL 80 dB
1
Guaranteed by design; not production tested.
Rev. 0 | Page 4 of 16
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AD1981HD
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Table 4. Programmable Gain Amplifier—ADC
Parameter Min Typ Max Unit
STEP SIZE 1.5 dB
PGA GAIN RANGE SPAN 0.0 22.5 dB
Table 5. Analog Mixer—Input Gain/Amplifiers/Attenuators
Parameter Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
Line In to Line Out 85 dB
Microphone In to Line Out
STEP SIZE: ALL MIXER INPUTS (Except PC BEEP) 1.5 dB
STEP SIZE: PC BEEP 3.0 dB
INPUT GAIN RANGE: ALL MIXER INPUTS (Except PC BEEP) −34.5 +12.0 dB
DIGITAL PC BEEP −45.0 0.0 dB
1
Guaranteed by design; not production tested.
Table 6. Digital Decimation and Interpolation Filters
Parameter Min Typ Max Unit
PASS BAND 0 0.4 × F
PASS-BAND RIPPLE ±0.09 dB
TRANSITION BAND 0.4 × F
STOP BAND 0.6 × F
STOP-BAND REJECTION −74 dB
GROUP DELAY 16/F
GROUP DELAY VARIATION OVER PASS BAND 0 μs
1
Guaranteed by design; not production tested.
1
1
80 dB
Hz
S
S
S
0.6 × F
∞ Hz
S
sec
Hz
S
Table 7. Analog-to-Digital Converters
Parameter Min Typ Max Unit
RESOLUTION 20 Bits
TOTAL HARMONIC DISTORTION (THD) −95 dB
DYNAMIC RANGE (−60 dB Input, THD + N Referenced to Full Scale, A-Weighted) −85 dB
CROSSTALK: LINE INPUTS (Input L, Ground R, Read R; Input R, Ground L, Read L) −80 dB
CROSSTALK: LINE INPUTS AND OTHER INPUTS −100 −80 dB
GAIN ERROR (Full-Scale Span Relative to Nominal Input Voltage) ±10 %
INTERCHANNEL GAIN MISMATCH (Difference of Gain Errors) ±0.5 dB
ADC OFFSET ERROR ±5 mV
Table 8. Digital-to-Analog Converters
Parameter Min Typ Max Unit
RESOLUTION 24 Bits
TOTAL HARMONIC DISTORTION (Line Out) −92 dB
TOTAL HARMONIC DISTORTION (Headphone Out) −75 dB
DYNAMIC RANGE (−60 dB Input, THD + N Referenced to Full Scale, A-Weighted) 90 dB
GAIN ERROR (Full-Scale Span Relative to Nominal Input Voltage) ±10 %
INTERCHANNEL GAIN MISMATCH (Difference of Gain Errors) ±0.7 dB
DAC CROSSTALK1 (Input L, Zero R, Read R Out; Input R, Zero L, Read L Out) −80 dB
1
Guaranteed by design; not production tested.
Rev. 0 | Page 5 of 16
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AD1981HD
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Table 9. Analog Output
Parameter Min Typ Max Unit
FULL-SCALE OUTPUT VOLTAGE (Headphone Disabled) 1 V rms
2.83 V p-p
Output Impedance
External Load Impedance 10 kΩ
Output Capacitance 15 pF
External Load Capacitance 1000 pF
FULL-SCALE OUTPUT VOLTAGE (Headphone Out) 1 V rms
2.83 V p-p
Output Impedance 1 Ω
External Load Impedance 32 Ω
Output Capacitance 15 pF
External Load Capacitance 1000 pF
VREF_FILT 2.050 2.250 2.450 V
MIC_BIAS (Ports B, C, D) 2.250 V
(xVREF [2:0] = 100, A
(xVREF [2:0] = 010) 0.0 V
Current Drive 5 mA
MUTE CLICK (MUTED OUTPUT, UNMUTED MIDSCALE DAC OUTPUT) ±5 mV
1
Guaranteed by design; not production tested.
1
= 5.0 V) 3.700 V
VDD
300 Ω
Table 10. Static Digital Specifications
Parameter Min Typ Max Unit
HIGH LEVEL INPUT VOLTAGE (VIH), DIGITAL INPUTS 0.65 × DV
LOW LEVEL INPUT VOLTAGE (VIL) 0.35 × DV
HIGH LEVEL OUTPUT VOLTAGE (VOH), IOH = 2 mA 0.90 × DV
LOW LEVEL OUTPUT VOLTAGE (VOL), IOL = 2 mA 0.10 × DV
INPUT LEAKAGE CURRENT −10 +10 μA
OUTPUT LEAKAGE CURRENT −10 +10 μA
INPUT/OUTPUT PIN CAPACITANCE 7.5 pF
DD
DD
V
V
DD
V
V
DD
Table 11. Power Supply
Parameter Min Typ Max Unit
POWER SUPPLY RANGE—ANALOG (AVDD) ±10% 4.5 5.5 V
POWER SUPPLY RANGE—DIGITAL (DVDD) ±10% 2.97 3.63 V
POWER DISSIPATION—ANALOG (AVDD)/DIGITAL (DVDD) 275/132 mW
ANALOG SUPPLY CURRENT—ANALOG (AVDD) 43 mA
DIGITAL SUPPLY CURRENT—DIGITAL (DVDD) 40 mA
POWER SUPPLY REJECTION (100 mV p-p Signal @ 1 kHz) 40 dB
Table 12. D3 Power-Down Savings
Parameter DV
FUNCTION NODE 0.5 0.0 mA
DAC 6.2 9.0 mA
ADC 8.0 8.0 mA
MIXER 0.0 15 mA
DD
AV
DD
Unit
Rev. 0 | Page 6 of 16
Page 7
AD1981HD
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ABSOLUTE MAXIMUM RATINGS
Table 13.
Power Supply Min Max Unit
Digital (DVDD) −0.3 +3.6 V
Analog (AVDD) −0.3 +6.0 V
Input Current (Except Supply Pins) ±10.0 mA
Analog Input Voltage (Signal Pins) −0.3 AVDD + 0.3 V
Digital Input Voltage (Signal Pins) −0.3 DVDD + 0.3 V
Ambient Temperature (Operating)
Commercial 0°C 70°C °C
Industrial –40°C +85°C °C
Storage Temperature −65°C +150°C °C
Stresses greater than those listed under Absolute Maximum
Ratings 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.
ENVIRONMENTAL CONDITIONS
Ambient Temperature Rating
T
= T
AMB
where:
is the case temperature in °C
T
CASE
PD is the power dissipation in W
θ
is the thermal resistance (case-to-ambient)
CA
Table 14. Thermal Resistance
Package θ
LQFP 76.2°C/W 17°C/W 59.2°C/W
1
θJA is the thermal resistance (junction-to-ambient).
2
θJC is the thermal resistance (junction-to-case).
− (PD × θCA)
CASE
1
JA
2
θ
JC
θ
CA
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. 0 | Page 7 of 16
Page 8
AD1981HD
0
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
DV
DD
2
GPIO_2
3
GPIO_3
4
DV
SS
DV
DV
SYNC
RESET
5
6
7
SS
8
9
DD
10
11
12
SDATA_OUT
BIT_CLK
SDATA_IN
PC BEEP
NC = NO CONNECT
S/PDIF_OUT47EAPD46NC45NC44GPIO_1/JS_
48
PIN 1
13
14
15
PORT-E_L
SENSE_A/SRC_B
AD1981HD
TOP VIEW
(Not to Scale)
16
17
PORT-F_L
PORT-E_R
GPIO_0/JS_1
43
18
CD_L
PORT-F_R
SS
AV
42
41
19
20
CD_GND
PORT-A_R40NC39PORT-A_L38AV
CD_R
DD
MONO_OUT
37
36
PORT-D_R
35
PORT-D_L
34
SENSE_B/SRC_A
33
NC
32
MIC_BIAS-D
31
NC
30
MIC_BIAS-F
29
MIC_BIAS-C
28
MIC_BIAS-B
27
VREF_FILT
26
AV
SS
25
AV
DD
21
22
23
24
PORT-B_L
PORT-C_L
PORT-B_R
PORT-C_R
Figure 3. Pin Configuration
Table 15. Pin Function Descriptions
Mnemonic Pin No. I/O Description
SDATA_OUT 5 I HD Audio Link Serial Data Output. Codec input stream.
BIT_CLK 6 I HD Audio Link Bit Clock Input. 24 MHz.
SDATA_IN 8 I/O HD Audio Link Serial Data Input. Codec output stream.
SYNC 10 I HD Audio Link Frame Sync.
RESET#
11 I HD Audio Link Reset. Master hardware reset.
04321-002
Table 16. Digital Input/Output Pin Function Descriptions
Mnemonic Pin No. I/O Description
GPIO_2 2 I/O General-Purpose Input/Output. Digital signal used to sense/control external circuits.
GPIO_3 3 I/O General-Purpose Input/Output. Digital signal used to sense/control external circuits.
GPIO_0/JS_1 43 I/O GPIO_0—General-Purpose Input/Output. Digital signal used to sense/control external circuits.
JS_1—Classic (DC) Jack Sense for Headphone Out Pins. Low indicates that nothing is plugged
into the jack; high indicates that a peripheral is plugged into the jack.
GPIO_1/JS_0 44 I/O GPIO_1—General-Purpose Input/Output. Digital signal used to sense/control external circuits
JS_0—Classic (DC) Jack Sense for Line Out Pins. Low indicates that nothing is plugged into the
jack; high indicates that a peripheral is plugged into the jack.
SENSE_A/SRC_B 13 I/O SENSE_A—Jack Sense A–D Input. For use with isolated switches on audio jacks.
SENSE_B/SRC_A 34 I/O SENSE_B—Jack Sense E–F Input. For use with isolated switches on audio jacks.
1
1
EAPD 47 O External Amplifier Power-Down Output.
S/PDIF_OUT 48 O S/PDIF Output.
1
To reduce SENSE_A/B static current draw, connect a single 2.69 kΩ resistor between Pins 13 and 34. Remove the resistors from Pins 33 and 13 to AVDD.
Rev. 0 | Page 8 of 16
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AD1981HD
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Table 17. Analog Input/Output Pin Function Descriptions
Mnemonic Pin No. I/O Channel Description Function
PC Beep 12 I N/A Analog Input for PC Beep Pass-Through, Even While in Reset. LI
PORT-E_L 14 I Left Line Input (Typically Auxiliary Input).
PORT-E_R 15 I Right Line Input (Typically Auxiliary Input). LI
PORT-F_L 16 I/O Left Multifunction Analog I/O Jack (Typically Rear Microphone). MIC, LI, LO
PORT-F_R 17 I/O Right Multifunction Analog I/O Jack (Typically Rear Microphone). MIC, LI, LO
CD_L 18 I Left CD Input, Left Channel. LI
CD_GND 19 I Ground CD Input, Ground. LI
CD_R 20 I Right CD Input, Right Channel. LI
PORT-B _L 21 I Left Multifunction Analog I/O Jack (Typically Front Microphone). MIC, LI
PORT-B_R 22 I Right Multifunction Analog I/O Jack (Typically Front Microphone). MIC, LI
PORT-C_L 23 I/O Left Multifunction Analog I/O Jack (Typically Rear Line Input). MIC, LI, LO
PORT-C_R 24 I/O Right Multifunction Analog I/O Jack (Typically Rear Line Input). MIC, LI, LO
PORT-D_L 35 I/O Left Multifunction Analog I/O Jack (Typically Rear Line Output). MIC, LI, LO
PORT-D_R 36 I/O Right Multifunction Analog I/O Jack (Typically Rear Line Output). MIC, LI, LO
MONO_OUT 37 O - Monaural Output to Telephony Subsystem Speakerphone. LO
PORT-A_L 39 O Left Headphone Output, Left Channel. LO, HP
PORT-A_R 41 O Right Headphone Output, Right Channel. LO, HP
1
MIC—Microphone capable, includes programmable MIC_BIAS pins and integrated boost amplifier; LI—line level analog inputs; LO— line level analog outputs;
HP—headphone support, includes integrated headphone amplifier.
1
Table 18. Filter/Reference Pin Function Descriptions
Mnemonic Pin No. I/O Description
VREF_FILT 27 O Voltage Reference Filter.
MIC_BIAS-B 28 O Programmable Microphone Bias Output. Intended for connection to Port B.
MIC_BIAS-C 29 O Programmable Microphone Bias Output. Intended for connection to Port C.
MIC_BIAS-F 30 O Programmable Microphone Bias Output. Intended for connection to Port F.
MIC_BIAS-D 32 O Programmable Microphone Bias Output. Intended for connection to Port D.
Table 19. Power and Ground Pin Function Descriptions
Mnemonic Pin No. I/O Description
DV
DV
AV
AV
SS
DD
SS
DD
4, 7 I Digital Supply Return (Ground).
1, 9 I Digital Supply Voltage (3.3 V).
26, 42 I Analog Supply Return (Ground).
25, 38 I Analog Supply Voltage (5.0 V).
AV
supplies should be well filtered because supply noise degrades audio performance.
DD
Rev. 0 | Page 9 of 16
Page 10
AD1981HD
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HD AUDIO CODEC INFORMATION
Table 20. Widget List and Descriptions
NID 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 0 Audio output Designates the codec S/PDIF digital stream output interface.
03 Front DAC 0 Audio output Designates the playback channel digital/audio converters.
04 Record ADC 1 Audio input Designates the record channel audio/digital converters.
05 Port-D (Line Out) 4 Pin complex Port-D pin drivers. Typically used as rear panel line output.
06 Port-A (Headphone Out) 4 Pin complex Port-A pin drivers. Typically used as front panel headphone output.
07 MONO_OUT 4 Pin complex
08 Port-B (Front Microphone) 4 Pin complex Port-B pin drivers. Typically used as front panel microphone.
09 Port-C (Line In) 4 Pin complex Port-C pin drivers. Typically used as rear panel line input.
0A S/PDIF_OUT 4 Pin complex S/PDIF output digital interface.
0B Monaural Selector 3 Audio selector Chooses which signals drive the monaural output mixer and pin.
0C Microphone Mixer 2 Audio mixer
0D PC Beep Selector 3 Audio selector
0E Analog Mixer 2 Audio mixer Selectively mixes analog input signals into a single signal.
0F Monaural Mixer 2 Audio mixer Stereo-to-monaural mixer for MONO_OUT.
10 Digital PC Beep 7 Beep generator Digital PC beep generator.
11 Front Mix Amp 3 Audio selector Individual gain control for the DAC (front) input to the Analog Mixer.
12 Port-B Mix Amp 3 Audio selector
13 Port-C Mix Amp 3 Audio selector
14 Analog Power-Down 5 Power widget Power control on the analog mixer and associated amplifiers.
15 Record Selector 3 Audio selector
16 PC Beep In 4 Pin complex
17 Port-E (Aux In) 4 Pin complex Port-E pin drivers. Typically used as auxiliary input.
18 Port-F (Rear Microphone) 4 Pin complex Port-F pin drivers. Typically used as rear panel microphone.
19 CD In 4 Pin complex CD in pin drivers.
1A Port-D Mix Amp 3 Audio selector
1B Port-E Mix Amp 3 Audio selector Individual gain control for the Port E (aux) input to the analog mixer.
1C Port-F Mix Amp 3 Audio selector
1D CD Mix Amp 3 Audio selector Individual gain control for the CD input to the analog mixer.
1E Front Microphone Mute 3 Audio selector Mute control for Port B (front microphone) into microphone mixer.
1F Rear Microphone Mute 3 Audio selector Mute control for Port F (rear microphone) into the microphone mixer.
Monaural output pin driver. Typically used to drive an internal
speaker or as a
Allows selective mixing of the front/rear microphone sources to a
single co
Selects between the digital beep generator and the analog PC BEEP pin
as the source for the analog mixer.
Individual gain control for the Port-B (front microphone) input to the
analog mixer.
Individual gain control for the Port-C (line in) input to the analog
mixer.
Chooses which signal is recorded by the record ADC. Also contains
the record gain controls.
Analog PC Beep in pin drivers. This signal
while the codec is held in reset. This may be selected as an input to
the analog mixer after reset has been released.
Individual gain control for the Port D (front) input to the analog
mixer.
Individual gain control for the Port F (rear microphone) input to the
analog mixer.
microphone selector on a telephony system.
mbined signal.
is coupled to the outputs
Rev. 0 | Page 10 of 16
Page 11
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AD1981HD
Table 21. Root and Function Node Parameters
NID Name
Type
ID
Vendor ID
1
PID 00
Revision ID
PID 02
Sub Node Count
PID 04
Function Group Type
PID 05
Audio F.G. Caps
PID 08
GPIO Caps
PID 11
00 ROOT X 11D41981 00100200 00010001
01 FUNCTION X 0002001E 00000001 00010C0C 40000004
1
PID = parameter ID.
Table 22. Widget Parameters
Input
NID Name PID 091PID 0A PID 0B PID 0C PID 0D PID 0E PID 0F PID 10
00 ROOT
01 FUNCTION 000E007F 00000001 00270300 00000009
02 S/PDIF 00030311 00020060 00000005 00000002
03 Front DAC 00000441 000E007F 00000001 00000000 00000009 00004601
04 Record ADC 00100511 0006007F 00000001 00000001 00000009
05 Port-D (Line Out) 00400187 0001173F 00270300 00000002
Port-A (Headphone Out)
06
07 MONO_OUT 00400104 00000010 00000001
Port-B (Front Microphone)
08
09 Port-C (Line In) 00400187 00001737 00270300 00000002
0A S/PDIF_OUT 00400301 00000010 00000001
0B Monaural Selector 00300101 00000006
0C Microphone Mixer 00200101 00000002
0D PC Beep Selector 0030010C 00000002
0E Analog Mixer 00200101 00000008
0F Monaural Mixer 00200100 00000001
10 Digital PC Beep 00700000 00000000
11 Front Mix Amp 0030010D 00000001
12 Port-B Mix Amp 0030010D 00000001
13 Port-C Mix Amp 0030010D 00000001
14 Analog Power-Down 00500500 00000006 00000009
15 Record Selector 0030010D 00000008
16 PC Beep In 00400000 00000020 00000000
17 Port-E (Aux In) 00400081 00000027 00000000
Port-F (Rear Microphone)
18
19 CD In 00400001 00000020 00000000
1A Port-D Mix Amp 0030010D 00000001
1B Port-E Mix Amp 0030010D 00000001
1C Port-F Mix Amp 0030010D 00000001
1D CD Mix Amp 0030010D 00000001
Front Microphone Mute
1E
Rear Microphone Mute
1F
1
PID = parameter ID.
Widget
Caps
00400185 0000001F 00000002
00400083 00001727 00270300 00000000
00400187 00001737 00270300 00000002
0030010D 00000001
0030010D 00000001
PC
M Size,
Rate
Stream
Format
Pin
Caps
Amp
Caps
Con. L
Len
ist
Power
States
Processing
Caps
Output
Amp Caps
PID 12
80053F3D
80053F3D
80053F3D
80053F3D
80053F3D
800B0F0F
80051F17
80051F17
80051F17
80050F00
80053F3D
80051F17
80051F17
80051F17
80051F17
80000000
80000000
VendorSpecific
PID F0
00000004
00000010
00000008
00000008
00000008
00000008
00000008
00000008
Default SSID: BFD10000
Rev. 0 | Page 11 of 16
Page 12
AD1981HD
www.BDTIC.com/ADI
Table 23. Default Configuration Parameters
31 29 27 23 19 15 8 7 3
30 28 24 20 16 12 8 4 0
Location Misc.
Node ID Name Value
05 Port-D (Line Out) 01014010 Jack External Rear Line Out 1/8" Jack Green 0 1 0
06 Port-A (HP Out) 0221401F Jack External Front HP Out 1/8" Jack Green 0 1 F
07 Mono Out 90130130 Fixed Internal N/A Speaker ATAPI unknown 1 3 0
08 Port-B (Front MIC) 02A19040 Jack External Front Mic In 1/8" Jack Pink 0 4 0
09 Port-C (Line In) 01813041 Jack External Rear Line In 1/8" Jack Blue 0 4 1
0A S/PDIF Out 01451020 Jack External Rear SPDIF Out Optical Black 0 2 0
16 PC Beep In 90F30150 Fixed Internal N/A other ATAPI unknown 1 5 0
17 Port-E (Aux In) 99930144 Fixed Internal Special 3 AUX ATAPI unknown 1 4 4
18 Port-F (Rear MIC) 01A19043 Jack External Rear Mic In 1/8" Jack Pink 0 4 3
19 CD In 99330142 Fixed Internal Special 3 CD ATAPI unknown 1 4 2
Table 24. Widget Connection List
Index
0 1 2 3 4 5 6 7 8 9
NID Name NID NID NID NID NID NID NID NID NID NID
2 S/PDIF 01 04
3 Front DAC
4 Record ADC 15
5 Port-D (Line Out) 03 0E
6 Port-A (Headphone Out) 03 0E
7 MONO_OUT 0F
8 Port-B (Front Microphone)
9 Port-C (Line In) 03 0E
0A S/PDIF_OUT 02
0B Monaural Selector 03 0C 09 0E 05 18
0C Microphone Mixer 1E 1F
0D PC Beep Selector 10 16
0E Analog Mixer 0D 11 12 13 1A 1B 1C 1D
0F Monaural Mixer 0B
10 Digital PC Beep
11 Front Mix Amp 03
12 Port-B Mix Amp 08
13 Port-C Mix Amp 09
14 Analog Power-Down 0D 0E 10 11 12 13 1A 1B 1C 1D
15 Record Selector 0C 09 0E 0F 19 05 18 17
16 PC Beep In
17 Port-E (Aux In)
18 Port-F (Rear Microphone) 03 0E
19 CD In
1A Port-D Mix Amp 05
1B Port-E Mix Amp 17
1C Port-F Mix Amp 18
1D CD Mix Amp 19
1E Front Microphone Mute 08
1F Rear Microphone Mute 18
Connector
Chassis Position Def. Device Conn. Type Color Ovrrd. Def. Assn.
Sequence
Rev. 0 | Page 12 of 16
Page 13
www.BDTIC.com/ADI
Table 25. Widget Verb Support
CONVERTER 2
DIGITAL
CONVERTER 1
DIGITAL
ENABLE
EAPD/BTL
BEEP GENERATOR
PIN SENSE
ENABLE
UNSOLICITED
CONTROL
PIN WIDGET
STREAM ID
CHANNEL/
POWER STATE
SELECT
SDATA_IN
STATE
PROCESSING
ENTRY
CONNECTION LIST
SELECT
CONNECTION
PARAMETER
COFFICIENT INDEX
Y
Y
Y
Y
1
Y
Y
Y
YY
YY
1
1
AD1981HD
COEFFICIENT
PROCESSING
GAIN/MUTE
AMPLIFIER
STREAM FORMAT
GET 0xAxx 0xBXX 0xCxx 0xDxx 0xF00 0xF01 0xF02 0xF03 0xF04 0xF05 0xF06 0xF07 0xF08 0xF09 0xF0A 0xF0C 0xF0D
SET 0x2xx 0x3xx 0x4xx 0x5xx --- 0x701 --- 0x703 0x704 0x705 0x706 0x707 0x708 0x709 0x70A 0x70C 0x70D 0x70E
TYPE
ID
NAME
NID
00 OT X YRO
22
01 FUNCTION X
02 S/PDIF 0 Y Y103 FRONT DAC 0 Y Y Y Y Y
04 RECORD ADC 1 Y Y Y
4 Y YYY YYY Y
PORT-D (LINE OUT)
MONO_OUT
PORT-A
(HEADPHONE OUT)
PORT-B
(FRONT MICROPHONE)
05
06 4 Y YYY YYY
07 4 Y Y Y Y
08 4 Y Y YYY
09 PORT-C (LINE IN) 4 Y Y Y Y Y Y Y
2YY
MICROPHONE MIXER
MONAURAL
0A S/PDIF_OUT 4 Y Y Y
SELECTOR
0B 3 Y Y Y
0C
MONAURAL MIXER
0D PC BEEP SELECTOR 3 Y Y Y Y
0E ER 2 Y YANALOG MIX
0F 2 Y Y
10 DIGITAL PC BEEP 7 Y Y
11 FRONT MIX AMP 3 Y Y Y
12 PORT-B MIX AMP 3 Y Y Y
13 PORT-C MIX AMP 3 Y Y Y
DOWN 5 Y Y Y
ANALOG POWER-
14
Rev. 0 | Page 13 of 16
4 Y YYY
PORT-E (AUX IN)
PORT-F
(REAR MICROPHONE)
15 RECORD SELECTOR 3 Y Y Y Y
16 PC BEEP IN 4 Y Y
17
18 4 Y YYY YYY
3Y YY
3Y YY
FRONT
MICROPHONE MUTE
REAR
MICROPHONE MUTE
CD MIX AMP
19 CD IN 4 Y Y
1A PORT-D MIX AMP 3 Y Y Y
1B PORT-E MIX AMP 3 Y Y Y
1C PORT-F MIX AMP 3 Y Y Y
1D 3 Y Y Y
1E
1F
UNSUPPORTED IN THE AD1981HD. GET VERB ALWAYS RETURNS 0; SET VERBS IGNORED.2SUPPORTS ADI SPECIFIC FUNCTIONALITY. REFER TO THE AD1981HD PROGRAMMER'S MANUAL FOR MORE INFORMATION.
1
04321-003
Page 14
AD1981HD
www.BDTIC.com/ADI
Table 26. Widget Extended Verb Support
RESET
---
BYTE 4 (31:24)
SUBSYSTEM ID
BYTE 3 (23:16)
SUBSYSTEM ID
BYTE 2 (15:08)
SUBSYSTEM ID
BYTE 1 (07:00)
SUBSYSTEM ID
BYTE 4 (31:24)
CONFIG DEF
BYTE 3 (23:16)
CONFIG DEF
BYTE 2 (15:08
CONFIG DEF
BYTE 1 (07:00)
CONFIG DEF
MASK
GPIO STICKY
MASK
GPIO UNSOLICITED
GPIO WAKE MASK
GPIO DIRECTI ON
1
1
YYYYY
Y
GPIO ENABLE
GPIO DATA
GPO DATA
GPI STICKY MASK
MASK
GPI UNSOLICITED
ENABLE
GPI WAKE
GPI DATA
GET 0xF10 0xF11 0xF12 0xF13 0xF14 0xF15 0xF16 0xF17 0xF18 0xF19 0xF1A 0xF1C 0xF20
SET 0x710 0x711 0x712 0x713 0x714 0x715 0x716 0x717 0x718 0x719 0x71A 0x71C 0x71D 0x71E 0x71F 0x720 0x721 0x722 0x723 0x7FF
TYPE
ID
NAME
NID
09 PORT-C (LINE IN) 4 YYYY
S/PDIF_OUT
0A 4 YYYY
MONO_OUT
PORT-B
07 4 YYYY
(FRONTMICROPHONE)
08 4 YYYY
PORT-A
(HEADPHONE OUT)
01 FUNCTION X Y Y Y
05 PORT-D (LINE OUT) 4 YYYY
06 4 YYYY
16 PC BEEP IN 4 YYYY
PORT-F
17 PORT-E (AUX IN) 4 YYYY
(REAR MICROPHONE)
18 4 YYYY
UNSUPPORTED IN THE AD1981HD. GET VERB ALWAYS RETURNS 0; SET VERBS IGNORED.
19 CD IN 4 YYYY
1
04321-004
Rev. 0 | Page 14 of 16
Page 15
www.BDTIC.com/ADI
JACK PRESENCE DETECTION
HD AUDIO STYLE JACK PRESENCE DETECTION
The AD1981HD uses two jack sense lines for jack presence
detection. Combined with the peripheral enumeration engines,
this enables software to determine if there is a device plugged
into the circuit and what type of device it is. Software can also
reconfigure jacks and amplifiers as necessary, ensuring proper
audio operation and providing jack retasking.
Jack presence is detected using a resistor tree arrangement
ou
tlined in the HD audio specification. Up to four jacks can be
sensed on a single sense line by using different value resistors
for each jack between the sense line and ground (AV
must normally have open, isolated switches to use this method
of jack presence detection.
Jack presence is reflected in the HD audio pin widget pin sense
verb
. The MSB (Bit 31) indicates the current plugged state of the
connected jack. Jack change interrupts can be enabled using the
unsolicited response verb on each of these nodes. Each jack can
be set to generate a different value to provide event
identification within the software interrupt.
). Jacks
SS
AD1981HD
There are two methods to connect the codec to the jack
pr
esence detection pins. In the first method, use a single
2.69 kΩ 1% resistor between the SENSE_A and SENSE_B lines,
but no capacitor. In the second method use a single 2.69 kΩ
resister between SENSE_A and AV
and AV
1 μF of capacitance on each sense line. Designers should offer
both methods for maximum flexibility.
The specific resistor value for each jack is shown in Ta b le 2 7 .
Us
accurate detection.
. In the second method, the designer can add up to
DD
e 1% resistors for all jack presence detect circuitry to ensure
CLASSIC JACK PRESENCE DETECTION
The AD1981HD GPIO pins can be used as classic jack sense
pins in JS_0- and JS_1-style operation (similar to AD1981B
operation). Only two jacks, typically line out and headphone
out, are supported in this configuration. The GPIO pins can be
connected to the left channel wrap-back switch on the jack via a
2.2 kΩ (typical) resistor. The left channel needs a 20 kΩ (typical)
resistor-to-analog ground to complete the circuit. This configuration allows autoconfiguration when other devices are plugged
in; for example, when headphones are plugged in, the external
speakers are disabled for private listening.
and between SENSE_B
DD
Table 27. Jack Sense Mapping
SENSE_A SENSE_B
Resistor
(1% tolerance) Name Port HD Audio Node ID
5.1 kΩ Line Out D 0x05 N/A N/A N/A
10.0 kΩ Line In C 0x09 N/A N/A N/A
20.0 kΩ Front Microphone B 0x08 Rear Microphone F 0x18
39.2 kΩ Headphone Out A 0x06 Aux In E 0x17
Name Port HD Audio Node ID
Rev. 0 | Page 15 of 16
Page 16
AD1981HD
www.BDTIC.com/ADI
OUTLINE DIMENSIONS
1.45
1.40
1.35
0.15
SEATING
0.05
PLANE
VIEW A
ROTATED 90° CCW
Figure 4. 48-Lead Low Profile Quad Flat Package [LQFP]
0.75
0.60
0.45
0.20
0.09
7°
3.5°
0°
0.08 MAX
COPLANARITY
COMPLIANT TO JEDEC STANDARDS MS-026BBC
(ST-
1.60
MAX
48)
VIEW A
48
1
12
13
0.50
BSC
LEAD PITCH
PIN 1
(PINS DOWN)
Dimensions shown in millimeters
9.00 BSC
SQ
TOP VIEW
37
24
0.27
0.22
0.17
36
25
7.00
BSC SQ
ORDERING GUIDE
Model Temperature Range Package Description Package Option
AD1981HDJSTZ
1
AD1981HDJSTZ-REEL
1
Z = Pb-free part.
0°C to +70°C
0°C to +70°C
48-Lead LQFP, Tray Version
48-Lead LQFP, Reel Version
ST-48
ST-48
© 2005 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04321–0–6/05(0)
Rev. 0 | Page 16 of 16
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