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
Compared to desktop computers, the speed of mobile phone storage chips has rapidly developed in the past two years. The once mainstream eMMC 4.5 has quickly evolved to the latest UFS 2.1. Currently, the highest speed of UFS 2.1 flash memory can reach 1166MB/s, while the theoretical maximum speed of mid-range eMMC 5.0 is 400MB/s; … Read more
Due to certain models of eMMC from a specific brand【such as: H26M62002JPR, H26M51002KPR, etc.】 requiring 1.8V for read and write operations, improvements must be made for these chips in the original V2.3 and lower versions: 1. A 3.3V to 1.8V LDO, package: SOT-23 2. Two 1uF-4.7uF surface mount capacitors, package: 0603 The installation effect is … Read more
EMMC online reading and writing ISP dedicated line: https://item.taobao.com/item.htm?id=557709148652 Here we share a batch of EMMC chip flying wire reading and writing point maps for LCD TVs, making it easier for everyone to use ISP online reading and writing dedicated lines without disassembling the chip to read EMMC data. Follow our public account for more … Read more
RT809H Programmer Tutorial: Introduction to the Direct Write Function for EMMC Chip on TV Mainboards EMMC Direct Write Boot Program Operation Demonstration Video: Smart TVs are very common in the market today, and the repair of TV mainboards often involves data copying. Using the RT809H programmer allows for easy reading of normal machine data for … Read more
Method 1 (Applicable to Most Chipsets): After the system starts, check the EMMC write cycles by inputting the following command in the serial print information: tclsu (or su)cat /sys/kernel/debug/mmc0/mmc0:0001/ext_csd After executing the command, a long string of numbers will appear. Copy these numbers into a text document, open it with a text editing tool like … Read more
RT809H Programmer Tutorial: LeEco X3(928) EMMC Flashing Guide and USB Upgrade Program. Boot Burning Mboot Burning LeEco X3(928) board number MS6A928_MBD_C_H5100 wire connection method: First, solder the CLK, CMD, D0, GND on the motherboard according to the point diagram, disconnect the resistor at the wire connection and short the main chip oscillator. After powering on … Read more
Flash memory is a type of electronic non-volatile memory that can be electrically erased and reprogrammed. This technology is mainly used for general data storage and for transferring data between computers and other digital products, such as storage cards and USB drives. Flash memory is non-volatile, meaning it does not require power to retain data. … Read more
RT809H Programmer Tutorial: Fly Line Read/Write EMMC Boot and Erase Methods Solder CLK, CMD, D0, and GND according to the points, and short the two ends of the crystal oscillator. Insert the soldered ISP cable into the ISP port of the RT809H programmer and power on the motherboard. Open the RT809H programmer interface, click on … Read more
Overview of the EMMC Protocol Whether it’s EMMC V4.5 or V5.1, the protocol can seem overwhelming for newcomers who may struggle to grasp the key points or analyze it properly. This article summarizes some important and commonly used aspects of the EMMC protocol. 1. Basic Understanding of EMMC 1.1 Physical Connections: Card Concept (eMMC) image-20220215110840519 … Read more