EMMC Socket Usage: Enter “EMMC” under “Input Chip Marking” to see the following three options: EMMC_AUTO: Speed 8BIT (default), automatically recognized when EMMC. EMMC_AUTO_4BIT: 4BIT, recommended for most chips for stability. EMMC_AUTO_1BIT: 1BIT, can be selected when the above two cannot read; slower speed but may recover data in the chip. Additionally, the chip model … Read more
Today, I am repairing a backlogged board sent by a Taobao user, the Changhong ZLS47HIS-V1 motherboard, some small capacitors are missing. The main chip is MSD6A818, powered by 12V+24V, with a Nor Flash+EMMC combination. The symptom is that the power light is on but it won’t boot. Connecting to the programmer, the printed information is … Read more
Before the open-source flashing tool, there is something that must be kindly reminded: 1. Thanks to the support of many students, all 100ASK_IMX6ULL development boards produced before the New Year have been sold out. Stock is expected around March 15. The quality of the 100ASK_IMX6ULL development board is excellent, with no hardware bugs. Production has … Read more
Recently, some users have reported errors while using the RT809H to read and write EMMC via flying wires. The causes of these errors are numerous and sensitive to external interference. We simulated various environments and conducted comprehensive tests using different computers. The test results are as follows: 1. Testing with a Laptop for VCCQ at … Read more
Open the RT809H operation interface, click [Smart Identification], select TYPE as EMMC, and Volt as 3.3V. Click settings, check EMMC Area in front of User/boot1/boot2/EXT_CSD, select VCCQ as 3.3V, then click write, choose the backup file, and select any one to start writing. RT809H Programmer Taobao Link: https://item.taobao.com/item.htm?id=551805435687 eMMC Programming Socket Taobao Link: https://item.taobao.com/item.htm?id=560967621649 Copy … Read more
1.Definition and Uses of eMMC eMMC stands for “Embedded MultiMediaCard”, which is an embedded storage solution that integrates storage chips, controllers, and interfaces. It is commonly used in embedded systems, mobile devices, and other applications requiring compact, integrated storage. Here are some key features and uses of eMMC: 1.Integration: eMMC integrates storage chips, controllers, and … Read more
Overview of EMMC Protocol Whether EMMC V4.5 or V5.1, the protocol can be quite extensive, making it difficult for newcomers to grasp the key points or analyze effectively. This article mainly summarizes some important and commonly used aspects of the EMMC protocol. 1. Basic Understanding of EMMC 1.1 Physical Lines: Card Concept (eMMC) Physical Interface … Read more
This is a multi-functional online writer board that integrates EMMC flying wire, UART serial port, and JTAG functionality for variable frequency air conditioners, compatible with the RT809H programmer. EMMC Flying Wire Interface: It can directly provide the required 3.3V and 1.8V voltage to the motherboard, making it convenient to power the EMMC during board repairs, … Read more
The Konka LCD TV uses the RTD2995D main chip for its 4K network LCD TVs. This type of motherboard often has faulty EMMC chips. After replacing the EMMC, you need to use a programmer to write the boot program and then upgrade it using a USB drive. Some TVs that fail to upgrade via USB … Read more
Using mmc_test Tool on Linux Many friends have questions about how to test emmc/sd modules on Linux. Of course, mmc core provides mmc_test.c as a test file for the mmc driver. How to use the mmc_test.c test file to test the mmc driver? 1. Compile mmc_test.c into the Kernel By default, mmc_test.c is an independent … Read more