| Signal Group | Pin (Lane 0) | Pin (Lane 1) | Description | Differential Impedance | | :--- | :--- | :--- | :--- | :--- | | | R1 (DOUT_T0_P) R2 (DOUT_T0_M) | M1 (DOUT_T1_P) M2 (DOUT_T1_M) | Device Transmit to Host. Positive (P) and Negative (M) diff pair. | 100Ω ±10% | | RX (Host to Device) | T2 (DIN_T0_P) T3 (DIN_T0_M) | P1 (DIN_T1_P) P2 (DIN_T1_M) | Device Receive from Host. Positive and Negative diff pair. | 100Ω ±10% | | REF_CLK | K1 (REF_CLK_P) K2 (REF_CLK_N) | N/A | Differential reference clock (19.2 MHz, 26 MHz, or 38.4 MHz) from host. | 100Ω |
The UFS 3.1 pinout is not just a random arrangement of balls—it is a carefully engineered high-speed serial interface that demands respect for differential signaling, multiple power domains, and vendor-specific strapping. Whether you are designing a PCB, repairing a flagship device, or attempting forensic data extraction, understanding the key pins (REF_CLK, RST_n, RX/TX pairs, and power rails) will save you hours of troubleshooting and prevent costly chip damage. Always verify your pinout against the component datasheet before applying power, and remember: in the world of UFS, assumptions are the mother of all failures. ufs 3.1 pinout
UFS 3.1 typically supports a 2-lane configuration (2 TX and 2 RX pairs), doubling the bandwidth compared to single-lane setups. Power Supply Pins | Signal Group | Pin (Lane 0) |
In the context of hardware repair and data forensics, the most "helpful feature" of a UFS 3.1 pinout is its support for In-System Programming (ISP) Positive and Negative diff pair
for a specific package size, such as the 11.5mm x 13mm variant?