ad1989a Conexant Systems, Inc., ad1989a Datasheet - Page 18

• Manufacturer Part Number: ad1989a
• Description: Ad1989a High Definition Audio Soundmax Codec
• Manufacturer: Conexant Systems, Inc.

High Definition Audio SoundMAX Codec
Table 10.
18
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/EAPD-B
MIC_BIAS-C/EAPD-C
MIC_BIAS-E/EAPD-E
MIC_BIAS-D/EAPD-D
MIC_BIAS-A/EAPD-A
VREF_FILT
DV
CORE
Mnemonic
Pin Descriptions (2 of 3)
Pin No.
22
23
24
35
36
39
40
41
43
44
28
29
31
32
37
27
1
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
O
O
Function
Analog I/O (continued)
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).
Switchable Microphone Bias. For use with Port D (Pins 35, 36)
Switchable Microphone Bias. For use with Port A (Pins 39, 41)
All MIC_BIAS pins are capable of:
Voltage Reference Filter.
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
High-Z, 0 V, 1.65 V, 3.78 V, and 3.95 V (with 5.0 V on Pin 33)
High-Z, 0 V, 1.65 V, 2.86 V, and 3.00 V (with 3.3 V on Pin 33).
Filter/Reference
Conexant
SS
(Pin 4).
Description
AD1989A Data Sheet
DSH-202088A
3/2/09