Receiver differential pair for Lane 0 ( DIN0_t , DIN0_c ) and Lane 1 ( DIN1_t , DIN1_c ). This handles data sent from the host processor to the storage chip.
: In scenarios where desoldering the chip poses too high a thermal risk to adjacent components (like the CPU), engineers solder micro-wires directly to exposed motherboard test points matching the UFS 3.1 pinout ( TX0_P/N , RX0_P/N , REF_CLK , RST_n , VCC , VCCQ , and GND ). Conclusion
: Hardware Reset. An active-low signal utilized by the host device to completely reset the UFS controller. Critical Differences: eMMC Pinout vs. UFS 3.1 Pinout
Universal Flash Storage (UFS) 3.1 is an advanced storage standard developed by the JEDEC Solid State Technology Association to meet the high-bandwidth and low-latency demands of 5G smartphones, automotive systems, and IoT devices. By utilizing the MIPI M-PHY physical layer and UniPro link layer, UFS 3.1 achieves sequential read speeds of approximately 2100 MB/s, representing a significant performance leap over older standards like eMMC. 1. Physical Interface: The BGA153 Footprint
Universal flash storage (UFS) controller and NAND. Differential I/O pins. – 2 lanes supported. – High speed: Gear 1/2/3 supported. Mouser Electronics
The UFS 3.1 pinout is divided into several functional groups:
If you are designing a circuit board or performing chip-off data recovery/repair on a UFS 3.1 chip, observe the following rules:
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Universal Flash Storage (UFS) 3.1 is a high-performance storage standard designed for modern smartphones, tablets, and automotive systems. Offering data transfer speeds that rival solid-state drives (SSDs), UFS 3.1 relies on a sophisticated hardware interface to manage high-speed data lanes, power distribution, and control signals.
UFS 3.1 introduces new features intended to help maximize device performance while minimizing power usage. 153-Ball Automotive UFS Memory - Mouser Electronics
If C/D ball is high, device boots from logical unit 0 (normal). If low, enters pre-soldering test mode (do not use in product).
#MobileRepair #Schematics #UFS #HelpNeeded
Core power supply for the NAND flash memory array. Typically operates at 2.5V to 3.3V .
What (e.g., Samsung, Micron) are you using?
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The pinout of UFS 3.1 is the manifestation of a sophisticated and powerful data storage standard. For the engineer working on a new smartphone, the technician diagnosing a dead phone, or the hobbyist working on an embedded Linux project, this knowledge is not just abstract theory; it's practical, hands-on information that drives successful design and repair. The architecture is a testament to the engineering effort required to make our devices faster, more power-efficient, and more reliable.
The UFS 3.1 chip must be carefully desoldered using a hot-air rework station.
Universal Flash Storage (UFS) 3.1: Technical Architecture and Pinout Analysis