USB2642 Datasheet, PDF (1/56 Pages) Microchip Technology – USB 2.0 Hub and Flash Media Card Controller Combo

USB2642
USB 2.0 Hub and Flash Media Card Controller Combo
General Description
The USB2642 is a USB 2.0 compliant, hi-speed hub
and card reader combo solution. This fully-integrated,
single chip solution provides USB expansion and flash
media reader/writer integration. The Microchip
USB2642 provides an ultra fast interface between a
USB host and today’s popular flash media formats. The
controller allows read/write capability to flash media
including the following:
• Secure Digital^TM (SD)
• SD High Capacity^TM (SDHC)
• SD Extended Capacity^TM (SDXC)
• MultiMediaCard^TM(MMC)
• Embedded MultiMediaCard^TM (eMMC)
The USB2642 offers a versatile, cost-effective and
energy-efficient hub controller with 2 downstream USB
2.0 ports and a flash media interface. The flash media
interface can support sustained transfer rates exceed-
ing 35 MB/s.
Additionally, the USB2642 provides an I²C^TM over USB
bridge and an SD over USB bridge. The I²C bridge
allows for control of any I²C slave device operating at
50KHz serial clock.
Highlights
• PortMap
- Flexible port mapping and port disable
sequencing supports multiple platform
designs
• PortSwap
- Programmable USB differential-pair pin loca-
tions eases PCB design by aligning USB sig-
nal traces directly to connectors
• PHYBoost
- Programmable USB transceiver drive
strength recovers signal integrity
Features
• Single-chip USB 2.0 hub controller with 2
exposed hi-speed downstream ports
• The dedicated flash media reader is internally
attached to a 3rd downstream port of the hub as a
USB compound device
• Hub and flash media reader/writer configuration
from a single source:
- Configures internal code using an external
SPI ROM
- Supports execution of external code from SPI
Flash EEPROM
- Supports custom vendor, product, and lan-
guage ID when using an external EEPROM
• Supports full power management with individual
or ganged power control of each downstream port
• Transaction Translator (TT) in the hub supports
operation of FS and LS peripherals
• Single 24 MHz crystal support
• Control of peripheral I²C devices by USB host.
• Supports internally or externally regulated 1.8 V
core voltage operation
• Supports storage addressability of up to 2TB
• RoHS compliant package
- USB2642: 48-pin (7x7 mm²) QFN
• Temperature ranges:
- Commercial Range (0 ºC to +70 ºC)
- Industrial Range (-40 ºC to +85 ºC)
Target Applications
• Desktop and mobile PCs
• Monitors and televisions
• Mobile PC docking
• Consumer A/V
• Media players/viewers
• Printers
• Flash media card readers/writers
 2014-2015 Microchip Technology Inc.
DS00001578C-page 1