MA8621 Ver la hoja de datos (PDF) - Prolific
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MA8621 Datasheet PDF : 2 Pages
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MA8621 Product Brochure
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V0.1 15/11/2016
MA8621
USB 2.0 High Speed 3-Port Hub with SD Reader Controller
The MA8621 is a high performance solution for USB 2.0 High Speed 3-port hub with SD card
controller which is fully compliant with Universal Serial Bus Specification 2.0. The controller
inherits advanced serial interface technology to consume the least power when 3 DS (downstream)
ports function simultaneously.
The MA8621 is an innovation that integrates function to combine USB 2.0 Hub and SD card reader.
The reader complies with SD, SDHC, SDXC and MMC card specification. With single IC, MA8621
provides system solution targeting the multi-media set top box for multiple USB ports and reader
application.
MA8621 adapt Single Transaction Translator (STT) and Ganged power management to achieve cost
effective purpose. Users can also implement multiple Hub configuration options through external
EEPROM.
Features
USB 2.0 Hub
Compliant with USB Specification Revision 2.0
o Upstream Port supports high-speed (480MHz) and full-speed (12MHz) traffic
o Configurable 3/2 downstream ports support high-speed, full-speed, and low-speed
o Backward compatible to USB Specification Revision 1.1
12Mhz Oscillator clock input
Integrated upstream 1.5KΩ pull-up downstream 15KΩ pull-down resisters
Single Transaction Translator (Single TT)
Ganged Power Control and Global Over Current detection for downstream ports
Leading small power consumption USB2.0 Hub
Integrated Fast 8051 microprocessor
On chip 5V to 3.3V/1.2V regulator
Automatic re-enumeration for switching between self-powered and bus-powered modes
External EEPROM interface for customized information storage
o Customized VID, PID
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