The ALC is an bit, full duplex AC’97 compatible stereo audio CODEC designed for PC multimedia systems, including host/soft audio and AMR/CNR. Description, AC’97 Audio Codec. Company, Realtek Semiconductor Corporation. Datasheet, Download ALC datasheet. Quote. Find where to buy. Quote. Avance Logic, Inc. ALC AVANCE LOGIC, INC. SINGLE CHIP SIX CHANNEL AC’97 AUDIO CODEC ALC 1. Features.
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The ALC CODEC provides two pairs of stereo outputs with independent volume controls, a mono output, and multiple stereo and mono inputs, along with flexible mixing, gain and mute functions to provide a complete integrated audio solution for PCs. Bit 9 allows selection of mono output. Cold, Warm and Register reset which listed below: The ALC will return any uninstalled bits or registers with 0 for the read operation.
Bit Type Function Below is an example of differential CD input. Set GPIO0 as input pin. Bit 2 is used to select the clock source for the ALC Bit 13 enables or disables 3D control.
Drive GPIO0 as low. Writing 1xxxxx will be interpreted as x and read as x Not yet Analog Mixer Status 1: Intel Pentium 4 Proces The fourth code is a Realtek assigned code identifying the ALC When this register is written, the bit values that come in on AC-Link will have no effect on read only bits and bit Power down Mixer Vref still on PR1 0: Vref is up to normal level 0: The written data is ignored.
Reading unimplemented registers will also return a 0. Locked by hardware 0: Mono output with 5-bit volume control. Register Write register indexed 00h Reset all registers to their default values. Power down Mixer Vref off PR2 0: And there is no gain for MX GPIO1 is driven low by external device input.
Mono output is the same data sent on all output channels.
(Datasheet) ALC pdf – ALC REALTEK SEMICONDUCTOR SIX CHANNEL AC’97 Audio Codec (1-page)
Each step in bit 6 corresponds to a magnification of 20dB increase in volume. Finally, internal PLL circuits generate required timing signals, eliminating the need for external clocking devices.
Bit Type Function 15 Reserved External amplifier power down capability. The 6th bit implementation is optional. Bit 8 controls the mic selector.
GPIO0 is driven high by external device input. This register used to control the master volume of LFE and center output.
Analog Performance Characteristics Standard test condition: Combined rise or fall plus flight times are provided for worst case scenario modeling purpose. The 3D stereo enhancement function provides for a deeper and dwtasheet sound experience with a potential 6-speaker arrangement. Set GPIO1 as input pin. See table under Section 6.
ALC650 Datasheet PDF
Low to high transition default 1: Reading this register returns the ID code of the specific part. Stereo output with 5-bit volume control.
Each step in bits Not yet DAC Status 1: