USB2660/USB2660i
Ultra Fast USB 2.0 Hub and Multi-Format Flash Media Controller
with Dual SD Interfaces
General Description
Features
The Microchip USB2660/USB2660i is a USB 2.0 com-
pliant, Hi-Speed hub, card reader, and protocol con-
verter combo solution. This fully integrated single chip
solution provides USB expansion and flash card media
reader/writer integration. The Microchip USB2660/
USB2660i 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
from the following families:
• Compliance with the following flash media card
specifications SD 2.0 / MMC 4.2 / MS 1.43 / MS-
Pro 1.02 / MS-Pro-HG 1.01 / MS-Duo 1.10 / xD
1.2
• Supports a single external 3.3 V supply source;
internal regulators provide 1.8 V internal core volt-
age for additional bill of materials and power sav-
ings
• The transaction translator (TT) in the hub sup-
ports operation of Full-Speed and Low-Speed
peripherals
- Secure DigitalTM (SD)
- MultiMediaCardTM (MMC)
- Memory Stick® (MS)
• 9 K RAM | 64 K on-chip ROM
- xD-Picture CardTM (xD)1
• Enhanced EMI rejection and ESD protection per-
formance
The USB2660/USB2660i offers a versatile, cost-effec-
tive, and energy-efficient hub controller with 2 down-
stream USB 2.0 ports. This combo solution leverages
Microchip’s innovative technology that delivers indus-
try-leading data throughput in mixed-speed USB envi-
ronments. Average sustained transfer rates exceeding
35 MB/s are possible2.
• Hub and flash media reader/writer configuration
from a single source: External I2C® ROM or exter-
nal SPI ROM
- Configures internal code using an external
I2C EEPROM
- Supports external code using an SPI Flash
EEPROM
- Customizable vendor ID, product ID, and lan-
guage ID if using an external EEPROM
Highlights
• 2 exposed Hi-Speed USB 2.0 downstream ports
for external peripheral expansion
• Additional SD port for card reader
• The dedicated flash media reader is internally
attached to a 3rd downstream port of the hub as a
USB Compound Device
• The USB2660i supports the industrial tempera-
ture range of -40°C to +85°C
• 64-pin QFN RoHS compliant package (9 x 9 mm)
- a single or multiplexed flash media reader
interface
- a non-multiplexed SD interface (slot) for SD
card reader
Applications
• Desktop and mobile PCs
• Printers
• PortMap - Flexible port mapping and port disable
sequencing supports multiple platform designs
• GPS navigation systems
• Media players/viewers
• Consumer A/V
• PortSwap - Programmable USB differential-pair
pin locations eases PCB design by aligning USB
signal traces directly to connectors
• Set-top boxes
• PHYBoost - Programmable USB transceiver
• Industrial products
drive strength recovers signal integrity
1.For xD-Picture CardTM support, please obtain a user
license from the xD-Picture Card License Office.
2.Host and media dependent.
2010-2019 Microchip Technology Inc.
DS00001931B-page 1
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