ad1882a Analog Devices, Inc., ad1882a Datasheet - Page 9

• Manufacturer Part Number: ad1882a
• Description: High Definition Audio Soundmax Codec
• Manufacturer: Analog Devices, Inc.

Table 6. AD1882A 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
DM_DATA
DM_CLK
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
45
46
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
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 20 | August 2008
Description
Link Serial Data Output. AD1882A input stream. Clocked on both edges of the
BIT_CLK.
Link Bit Clock. 24.000 MHz serial data clock.
Link Serial Data Input. AD1882A output stream clocked only on one edge of BIT_CLK.
Link Frame Sync.
Link Reset. AD1882A master hardware reset
General-Purpose Input/Output. Supports S/PDIF output as primary function.
General-Purpose Input/Output Pin/EAPD Pin. Digital signal used to control external
circuitry. By default pin is in a high-Z state. When used as EAPD: high-Z = amp-on,
DV
S/PDIF output.
Digital Microphone Data Input. Support for 2 digital microphones
Digital Microphone Clock 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 μF 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
= amp off.
SS
(Pin 4).
SS
(Pins 26, 42).
AD1882A