The ALCGR / ALCDD-GR is a high-performance multi-channel High Definition Audio Codec with Realtek proprietary loss-less content protection. Datasheet. +2 Channel High Definition Audio Codec iii. Track ID: JATR 21 Rev. Table of Contents. 1. GENERAL DESCRIPTION. ALC, Empower The World InPower Product Lines Confidential Free Datasheet http:/// Em,

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I’m assuming thats the headphone out and not line out? The DC blocking capacitor is before the header for the cable, but everything else is on the cable. The DC decoupling one is obviously a must in any such system, but the rest?

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Comparing the datasheets, it seems like the two chips use different flipped jack detection circuits: Frequency response from 40 Hz to 15 kHzdB: Hi Henry, I have GA-z77x-d3h and want to replacing the vt with alc too. So after the replacement, is everything normal and stable? I had one issue where the front-panel headphone and microphone pinouts were swapped, but I suspect that is more likely due to the OSX driver.

Line out to line in: I suspect darasheet was a driver port assignment bug rather than due to the hardware swap. Hopefully I can hack it successfully when it arrives. Surprisingly, the replaced chip appears to work fine.

I have not rigorously tested whether all of the output ports work. The codec chip and its accompanying 12V-to-5V linear regulator AS78L05, left of the codec get suspiciously hot around 50 C?


I just want to ask what the best temperature on blower solder gun to mak the solder quick melting but not make the component damage?

ALC RMAA results at 24/

You might check if the various power pins have reasonable voltages including the LDO and VREF outputsand see whether the signal pins are actually connected to the jacks? Are the jacks not detected at all, or is the wrong jack detected? Can i ask where did you get the Realtek chip from? Try setting the main output to headphone mode.

These tables are very often incorrect, and are overridden by the Windows driver shipped by mainboard manufacturer or the chip supplier. I have a question about a problem I have on another board that uses Realtek I used a multimeter to test the SMD resistor. It might be designed for a resistance or an inductance on all or most of the outputs close alc89 the pin, which VT might not care for, being taped out more spaciously or including internal stabilization.

It was auto-detected and configured automatically in Linux, and also works in OS X with the usual amount of headache. Those that I tested rear microphone and rear line out work fine. Have you tried debugging on the software side is the chip detected?

ALC Datasheet, PDF – Alldatasheet

I downloaded and installed the Realtek drivers and it installed without trouble. I think you really need to get the jack detection to work correctly. This might be true for Figure 20 rear jacksbut in Figure 19 front panel jacksthe ferrite bead is on the cable i.

Input reduced to “25”: On this particular board, on Windows, I think audio comes out of the rear green adtasheet if something is plugged into the rear blue jack to trigger the jack detection. I thought the BIOS has audio controller data or something.


Chances are, some of the small SMDs on the board are 0-Ohm resistors for the VT version of the board and valued components for the Realtek version. They may be analog power pins that power the analog portion of the chip. I just made an order for 2 of these on eBay.


Would love to replace the IDT chip with a Realtek. I kept and tested the stray resistor. Oscillation will also result in a degradation of distortion. As a source it should work pretty well.

Z77 Extreme 4 motherboard – I measured about 80 ohms for the front panel headphone output and ohms for the line out in the back. I finaly done it… replaced Via VTS with realtek ALC, and it is all detected and installed in windows, ratasheet it cant reconize any back panel or front panel jacks… i guess some pin i didnt solder good and that is why it cannot detect jacks…. Do you think if I replace the Realtek chip with the same one, it will fix the sound issue?

I think you could play some Hz sine wave e. I googled and couldnt find a straight answer to this one: Blog Random stuff… Comments Posts.