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High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller
Datasheet
Revision 1.0 (06-01-09) 8 SMSC USB4640/USB4640i
DATASHEET
Hardware Features
Single chip HSIC hub and flash media controller combo
USB4640 supports the commercial temperature range of 0°C to +70°C
USB4640i supports the industrial temperature range of -40°C to +85°C
Transaction translator (TT) in the hub supports operation of FS and LS peripherals
Full power management with individual or ganged power control of each downstream port
Optional support for external firmware access via SPI interface
Code execution via SPI ROM which must meet
- 30 MHz or 60 MHz operation support
- Single bit or dual bit mode support
- Mode 0 or mode 3 SPI support
Compliance with the following flash media card specifications:
Secure Digital 2.0 / MultiMediaCard 4.2
- SD 2.0, SD-HS, SD-HC
- TransFlash™ and reduced form factor media
- 1/4/8 bit MMC 4.2
Memory Stick 1.43
Memory Stick Pro Format 1.02
Memory Stick Pro-HG Duo Format 1.01
- Memory Stick, MS Duo, MS-HS, MS Pro-HG, MS Pro
Memory Stick Duo 1.10
xD-Picture Card 1.2
Up to 9 GPIOs: Configuration and polarity for special function use
- The number of actual GPIOs depends on the implementation configuration used
- One GPIO available with up to 200 mA drive and protected “fold-back” short circuit current
8051 8-bit microprocessor
- 60 MHz - single cycle execution
- 64 KB ROM | 9 KB RAM
Integrated regulator for 1.8 V core operation
Software Features
Hub and flash media reader/writer configuration from a single source:
External I
2
C ROM or external SPI ROM
If the OEM is using an external EEPROM or an external SPI ROM, the following features are
available:
- Customizable vendor ID, product ID, and device ID
- 12-hex digits maximum for the serial number string
- 28-character manufacturer ID and product strings for the flash media reader/writer