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	SDP5250 SD4.0 / SDIO 3.0 to PCIe Adapter

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First Impression

The SDP5250 is a PCI Express revision 2.1 compliant card reader controller that integrates PCI Express Transceiver, regulators and memory card access units into adapter.

The RTS5250S can support Secure Digital High Capacity^TM(SDHC),Secure Digital eXtended Capacity^TM(SDXC).
The SDP5250 fully supports SD UHS-I(Ultra High Speed-I) and SD UHS-II (Ultra High Speed-II) FD/HD mode.
The SDP5250 integrates 3.3V to 1.8V and 3.3V to 1.2V regulators and MOSFET for card power switch and, could dramatically reduce the system BOM cost.
The SDP5250 is fully compliant to Intel’s ULT platform requirement for the card reader application, not only supports the LTR (Latency Tolerance Reporting) and OBFF (Optimized Buffer Flush/Fill), but also has L1 substate and RTD3 (Runtime D3) function.
The SDP5250 is fully compliant to Intel Skylake 1.8V PCIe sideband signal (PERST#, CLK_REQ#,WAKE#).

Support Realtek wifi sdio module.
* Note: Qualcomm / Marvell sdio module Cannot support.

Features

Compliant with PCI Express Base Specification Revision 2.1
Support 1-Lane 5.0Gbps PCI Express Bus
Bus/Device/Function: 1-Lane, 1-Device, 1-Function
Compliant with SD Part 1 Physical Layer Specification Version 4.00
Support the following memory card interfaces:
-Secure Digital^TM (SD), SDXC, SDHC,SDIO
-SDXC up to 2TB
-Support SD4.0 UHS-II FD/HD mode, up to 312MB/sec
-Support SD3.0 UHS-I SDR-104 (208MHz SD clock), SDR-50 (100MHz SDclock)and DDR 50(50MHz SD clock)
Support hardware CRC (Cyclic Redundancy Check) function
On chip 800ma MOSFET for direct power control of all types memory cards
Support SD CPRM function and Memory Stick Pro MagicGate function
Support PCI Express Clock Request(CLK_REQ#) to save power consumption
Built-in variable sampling clock generator to determine correct sampling point for SD3.0 UHS card.
Support ASPM L0s/L1 to save power consumption
Support Auto-Delink mode to save power consumption
Support Spread Spectrum Clock for SD/MMC to reduce EMI effect
Support PCI Express LTR(Latency Tolerance Reporting)
Support PCI Express OBFF (Optimized Buffer Flush/Fill)
Support PCI Express L1 Sub-state (L1.snooze, L1.off)
Support PCI Express RTD3 (Runtime D3)
Support 1.8V PCIe sideband signal (PERST#, CLK_REQ#, WAKE#)
Support Realtek wifi sdio module.
* Note: Qualcomm / Marvell sdio module Cannot support.