AC97 SoundPort Codec
Description
a
AC’97 FEATURES Fully Compliant AC’97 Analog I/O Component 48-Terminal LQFP Package Multibit ⌺⌬ Converter Architecture for Improved S/N Ratio >90 dB 16-Bit Stereo Full-Duplex Codec Four Analog Line-Level Stereo Inputs for Connection from LINE, CD, VIDEO, and AUX Two Analog Line-Level Mono Inputs for Speakerphone and PC BEEP Mono MIC Input Switchable from Two External Sources High Quality CD Input with Ground Sense Stereo Line Level Output Mono Output for Speakerphone Power Management Support
AC’97 SoundPort® Codec AD1819B
ENHANCED FEATURES Support for Multiple Codec Communications DSP 16-Bit Serial Port Format Variable 7 kHz to 48 kHz Sampling Rate with 1 Hz Resolution Supports Modem Sample Rates and Filtering Phat™ Stereo 3D Stereo Enhancement VHDL and Verilog Models of Serial Port Available
FUNCTIONAL BLOCK DIAGRAM
CS0 CS1 CHAIN_IN CHAIN_CLK
AD1819B
MIC1 MIC2 LINE_IN AUX CD VIDEO PHONE_IN SYNC
AC LINK
0dB/ 20dB
MASTER/SLAVE SYNCHRONIZER
PGA
SELECTOR
16-BIT ⌺⌬ A/D CONVERTER
PGA
16-BIT ⌺⌬ A/D CONVERTER
RESET
⌺
G A M
G A M
G A M
G A M
G A M
G A M G A M
SAMPLE RATE GENERATORS
BIT_CLK
SDATA_OUT LINE_OUT_L MONO_OUT LINE_OUT_R
MV
MV MV
⌺
⌺
PHAT STEREO
⌺
⌺
⌺
⌺
⌺
16-BIT ⌺⌬ D/A CONVERTER
SDATA_IN
⌺
⌺
A M
⌺
PHAT STEREO
⌺
⌺
⌺
⌺
⌺
G A M
16-BIT ⌺⌬ D/A CONVERTER
PC_BEEP
G = GAIN A = ATTENUATE M = MUTE MV = MASTER VOLUME
OSCILLATORS
XTALO
XTALI
SoundPort is a registered trademark of Analog Devices, Inc.
Phat is a trademark of Analog Devices, Inc.
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 which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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