RTS5264

The RTS5264 is a PCI Express revision 4.0 supporting card reader controller that integrates a PCI Express transceiver, regulators, memory card access units, and a high-speed multiplexer into a single chip. The RTS5264 can support Secure Digital ^TM, Secure Digital High Capacity ^TM (SDHC), Secure Digital eXtended Capacity ^TM (SDXC), and Secure Digital Ultra Capacity ^TM (SDUC).

The chip fully supports SD UHS-I (Ultra High Speed-I), UHS-II (Ultra High Speed-II), DDR200, DDR225, and SD Express mode. The RTS5264 only requires one PCI Express lane.

The chip integrates 3.3V-to-1.8V and 3.3V-to-1.2V regulators and MOSFET for the card power switch, which could dramatically reduce the system BOM cost.

The chip fully supports modern platform requirements for the card reader applications. It supports LTR (Latency Tolerance Reporting) and L1 substate and RTD3 (Runtime D3) functions. It supports Windows modern standby.

The chip fully supports 3.3V/1.8V/1.2V PCIe sideband signal (PERST#, CLKREQ#, WAKE#, PRSNT#).

Supports SD Express

• Supports up to PCIe Gen4x2 bus mode

Supports SDUC up to 128TB

• Supports SD Part 1 Physical Layer Specification Version 8.00 (SD8.0)
• Supports the following memory card interfaces: Secure Digital ^TM (SD), SDXC, SDHC, SDUC, Mini-SD, and Micro-SD (T-flash)
• SDUC up to 128TB
• Supports UHS-I SDR-104 (208MHz SD clock), SDR-50 (100MHz SD clock) and DDR-50 (50MHz SD clock), HS, and DS
• Supports DDR200 and DDR225
• Supports SD Express
• Supports UHS-II FD up to FD156 and HD up to HD312
• Supports hardware CRC (Cyclic Redundancy Check) function
• On-chip MOSFET/LDO for direct power control of all types of memory cards, such as SDVDD1/SDVDD2/SDVDD3
• Built-in variable sampling clock generator to determine correct sampling point for SD UHS-I, DDR200, and DDR225 cards.
• Supports Spread Spectrum Clock for SD & UHS-II to reduce EMI effect
• Supports Application Performance Class
• Supports SD Command Queue and Cache

Enhance Power Saving

• Supports PCI Express Clock Request (CLKREQ#) to save power consumption
• Supports ASPM L0s/L1 to save power consumption
• Supports Auto-Delink mode to save power consumption
• Supports PCI Express LTR (Latency Tolerance Reporting)
• Supports PCI Express L1 Sub-state (L1.snooze, L1.off)
• Supports PCI Express RTD3 (Runtime D3)
• Supports Modern Standby
• Built-in 3.3V to 1.2V regulator

Supports Latest Platform

• Supports 3.3V, 1.8V, 1.2V PCIe sideband signals (PERST#, CLKREQ#, WAKE#, and PRSNT#)
• 32-pin QFN 4x4 package
• Supports eFUSE configuration

Notebook PCs, all-In-one PCs, and other systems with SD card access requirements