VT6435 PCI-Express Card Reader

VT6435Designed for mobile PC and embedded system platforms where low profile is essential, the VT6435 PCI Express Card Reader is highly interoperable with a range of flash media, providing card vendors with the utmost flexibility to design versatile, ultra-compact systems that enable customers to read and transfer data from any of seven flash card formats. The chip is a 5-in-1 flash card reader controller that supports SecureDigital (SD), MultiMediaCard (MMC), MemoryStick (MS), MemoryStick Pro (MS Pro), xD PictureCard (XD), SmartMedia (SM), and SDIO host interfaces.

For card reader function the VT6435 PCI Express Card Reader provides VIA’s highly compatible combo card reader drivers to the most popular operating systems, that includes Windows® 2000, XP, Server2003, Vista, and Linux 2.4.x/2.6.x. Furthermore, the Windows drivers of VIA card reader have certificated by Microsoft® DTM and got Windows® XP/Vista logo, including x86 and x64 platforms, and includes an enable/disable function allowing specific cards to be switched on or off, providing the most flexibility for system requirement.


PCI-Express BUS and Basic Function Specification

  • Full compliance to PCI Express Revision 1.1
  • Supports Advanced Error Reporting capability
  • Active State Power Management (ASPM) to L0s and L1
  • Flexible programmable Bus master burst sizes and advanced internal arbitration control to optimize the bus utilization
  • Compliance with PCI bus power management specification v1.1 and ACPI v2.0.
  • Supports I2C EEPROM
  • EEPROM contains other hardware configuration
  • Supports Shadow EEPROM mechanism for EEPROM-less application
  • Function enable/disable among xD/MMC/MS/SDIO

Card Reader Function Specification

  • Secure DigitalTM (SD)
  • Compliance with SD memory card Spec Rev 1.0/1.1
  • Support to SD-HC
  • SDIO Host Controller
  • Compliance with SDIO card Spec Rev 1.1.
  • Compliance with SD Host controller standard card Spec Rev 1.0
  • Multi Media Card (MMC)
  • High speed Multi Media Card Plus support – Compliance with Multi Media Card Specification Version 4.1/4.2
  • Support High Speed Multi Media Card features 8-bit parallel data transfer
  • Support to MMC-HC
  • Memory Stick Card/ Memory Stick Pro Card (MS PRO)
  • Compliance with Memory Stick standard format specification Ver:1.3/1.4/1.42
  • Compliance with Memory Stick Pro format Specification Ver:1.0/1.02
  • Support to MS PRO-HG
  • xD Picture Card
  • Compliance with xD Picture card specification Ver:1.2 / v1.2b
  • Compliance with xD Picture card host guideline specification Ver:1.2
  • Dedicated LED Indicators for Card Reader

Power and Clock Specification

  • Supports CLKREQ# to enhance power management for mobile PC
  • 3.3V and 1.2V I/O Power
  • Operates at 3.3V power supply
  • 5V tolerant input for inputs
  • Built-in 3.3V to 1.2V regulator
  • Built-in dedicated power switch for xD, MMC, MS, and SD (low voltage)
  • 2KV ESD protection
  • Crystal Oscillator: 24.576 MHz for card reader

Package Type

  • 9mm x 9mm. 64 pin QFN
VIA Technologies Japan株式会社