eMMC has four commands: BC: Broadcast command, no return value; BCR: Broadcast command, requires a return value; AC: Point-to-point addressing command, no data transfer on the DAT line; ADTC: Point-to-point addressing command, data is transferred on the DAT line. All commands and return values are completed on the CMD line. All commands are 48 bits … Read more
Introduction: In actual work, we often encounter situations where hardware materials are replaced, among which eMCP is quite common. This includes the selection of materials at the beginning of a project, comparing multiple materials for testing, or during project iterations when old materials are no longer produced, verifying whether new materials can meet requirements. Here, … Read more
Click the above Computer Enthusiast to follow us Recently, the mobile phone industry has been buzzing with the Samsung Galaxy Fold, the first commercially available foldable smartphone. The Galaxy Fold’s power is unquestionable, featuring a 4.6-inch + 7.3-inch dual-screen, Snapdragon 855 mobile platform, and six cameras. Aside from its high price, it is indeed impressive. … Read more
Click the above Computer Enthusiasts to follow us Just like the new PCs have fully transitioned to SSDs, today’s smartphones have also undergone a significant iteration, transitioning from eMMC flash to UFS flash. So, who influences the performance of UFS flash? Difference Between RAM and ROM Even now, many friends are unclear about the differences … Read more
Introduction to Trusted Platform Module (TPM) 1 RPMB (Replay Protected Memory Block) Partition is a secure partition in eMMC. When writing data to RPMB, eMMC verifies the legality of the data; only designated Hosts can write to it. During data reading, it also provides a signature mechanism to ensure that the data read by the … Read more
Introduction to EMMC Circuits EMMC (Embedded Multi Media Card) is a standard specification for embedded storage primarily aimed at products like mobile phones or tablets, established by the MMC Association. EMMC integrates a controller within the package, providing a standard interface and managing flash memory.The schematic for the 8-bit data signal is shown in Figure … Read more
A smartphone is composed of many components, and besides the processor, RAM, and graphics processor, flash memory is also a crucial indicator affecting performance and read speeds. Recently, there has been much discussion on social networks about terms like UFS 2.0, eMMC 5.1, and LPDDR4. Most users are still unclear about what these terms mean … Read more
Recently, the eMMC of the product encountered some issues. In response to these issues, I read the relevant sections of the Embedded Multi-Media Card (eMMC) Electrical Standard (5.1) JESD84-B51 and recorded the eMMC boot process as follows. The above figure shows the eMMC power-on process, with the following steps: 1. Power on VCC and VCCQ, … Read more
Original article address: https://item.szlcsc.com/97263.html iFix eMMC UDA Tool modified based on this document, special thanks! If the following images are unclear, you can click to enlarge. If you don’t understand the above image, no worries, keep reading: Open the RT809H programmer software, in the EMMC chip settings, there are 5 eMMC partitions, but only 4 … Read more
First, let’s take a look at the data file format of the RT809H’s eMMC chip as follows: The part circled in red is variable, and users can name it themselves. .BIN, .BIN.part1, .BIN.BOOT1, .BIN.BOOT2, .BIN.EXT_CSD and other file extensions are fixed; if they are not, the programmer will not recognize them or the software will … Read more