AD1882 Analog Devices, AD1882 Datasheet - Page 9

• Manufacturer Part Number: AD1882
• Description: High Definition Audio SoundMAX Codec
• Manufacturer: Analog Devices

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Table 8. AD1882 Pin Descriptions
Mnemonic
DIGITAL INTERFACE
DIGITAL I/O
JACK SENSE AND EAPD
ANALOG I/O
FILTER/REFERENCE
The symbols used in this table are defined as: 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).
SDATA_OUT
BIT_CLK
SDATA_IN
SYNC
RESET
GPIO_0
GPIO_1/EAPD
S/PDIF_OUT
SENSE_A/SRC_B
SENSE_B/SRC_A
PCBEEP
PORT-E_L
PORT-E_R
PORT-F_L
PORT-F_R
CD_L
CD_GND
CD_R
PORT-B_L
PORT-B_R
PORT-C_L
PORT-C_R
PORT-D_L
PORT-D_R
PORT-A_L
MONO_OUT
PORT-A_R
PORT-G_L
PORT-G_R
MIC_BIAS-B
MIC_BIAS-C
MIC_BIAS-E
DV
VREF_FLT
CORE
Pin No.
5
6
8
10
11
2
47
48
13
34
12
14
15
16
17
18
19
20
21
22
23
24
35
36
39
40
41
43
44
28
29
31
1
27
Function
I
I
I/O
I
I
I/O
I/O
O
I/O
I/O
LI
LI, MIC, LO, SWAP
LI, MIC, LO, SWAP
I/O
I/O
LI
LI
LI
LI, MIC, HP, LO
LI, MIC, HP, LO
LI, MIC, LO
LI, MIC, LO
LI, HP, LO
LI, HP, LO
LI, MIC, HP, LO
LO
LI, MIC, HP, LO
LO, SWAP
LO, SWAP
O
O
O
O
O
Rev. 0 | Page 9 of 16 | July 2007
Description
Link Serial Data Output. AD1882 input stream. Clocked on both edges of the
BIT_CLK.
Link Bit Clock. 24.000 MHz serial data clock.
Link Serial Data Input. AD1882 output stream Clocked only on one edge of BIT_CLK.
Link Frame Sync.
Link Reset. AD1882 master hardware reset
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 Hi-Z. When used as EAPD: Hi-Z = amp-on, DV
S/PDIF_OUT. Supports S/PDIF output.
JACK SENSE A-D Input/Sense B Drive.
JACK SENSE E-H Input/Sense A Drive.
Monaural Input from System for Analog PCBeep.
Auxiliary Input/Output Left Channel.
Auxiliary Input/Output Right Channel.
Auxiliary Input/Output Left Channel.
Auxiliary Input/Output Right Channel.
CD Audio Left Channel.
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 Audio Right Channel.
Front Panel Stereo MIC/Line-In.
Front Panel Stereo MIC/Line-In.
Rear Panel Stereo MIC/Line-In.
Rear Panel Stereo MIC/Line-In.
Rear Panel Headphone/Line-Out.
Rear Panel Headphone/Line-Out.
Front Panel Headphone/Line-Out.
Monaural Output to Internal Speaker or Telephony Subsystem Speakerphone.
Front Panel Headphone/Line-Out.
Rear Panel C/LFE Output.
Rear Panel C/LFE Output.
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).
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 DV
Voltage Reference Filter. This pin must be connected to filter caps: 1.0 μF and 0.1μF
connected in parallel between Pin 27 and AV
SS
(Pin 4).
SS
(Pins 26, 42).
SS
= amp off.
AD1882