USB-2COM-BB Dual RS-232/USB/Micro SD Cape for BeagleBone Black & BeagleBone
2
Introduction & Features of USB-2COM-BB
Introduction of USB-2COM-BB
The USB-2COM-BB is a plug-in RS-232 cape designed for the developers and users of BeagleBone
and BeagleBone Black. The USB-2COM-BB BeagleBone RS-232 cape provides two high-speed
RS-232 serial interfaces, two high-efficient USB 2.0 ports and one Micro SD card reader. The two
RS-232 ports are located to the side of the cape with two 90-degree 10-pin connectors. Two IDC
flat ribbon cables with D-Sub 9-pin male serial connectors are provided with the cape to connect
the two 10-pin serial connectors. The flat ribbon cable provides the convenience for extended
connection of serial devices. This dual RS-232 cape is designed to allow any other capes to be
stacked above it without interference mechanically. When there is a need to add four serial ports,
user can just stack two USB-2COM-BB modules over BeagleBone and BeagleBone Black.
When the USB-2COM-BB plugged to the USB port of BeagleBone or BeagleBone Black, the two
serial ports, two USB ports and the Micro SD card reader are automatically detected and installed.
The USB-2COM-BB board is designed with GL852G USB2.0 MTT Hub controller to expand the
single USB port on BeagleBone Black and BeagleBone to two USB 2.0 ports for USB connection.
The USB-2COM-BB cape is a high-speed dual RS-232 ports/ dual USB ports /Micro SD reader cape
that provides to BeagleBone Black and BeagleBone’s developers a cost-economical expansion I/O
module to add two serial ports, two USB ports and one MicroSD card reader for their
development.
Features of USB-2COM-BB
Fully compatible with BeagleBone Black or BeagleBone platform
Adds two high speed RS-232 serial ports via USB connection
Each serial port provided 384 bytes receive buffer and 128 bytes transmit buffer for high
speed data throughput
Each serial port communication data rates up to 1 Mbps.
Connector: two DB9 Male connectors via IDC flat ribbon cable
RS-232 data signals: DCD, RxD, TxD, DTR, GND, DSR, RTS, CTS, RI
Two downstream USB 2.0 ports with over-current detection and protection
Each downstream USB port supports 5V 500 mA power for external high power USB
devices
Individual port power management
Supports USB 1.1 and USB 2.0 transfer speeds from 1.5 Mbps to 480 Mbps, automatic
link and speed detection
Plug-and-Play; no software or drivers required
Supports SD specification v1.0 / v1.1 / v2.0 / SDHC, up to 32GB
Compatible with SDXC, Up to 2TB
Micro SD card reader with 480 Mbps USB 2.0 transfer speed
CE, FCC approval
