Information Technology Reference
In-Depth Information
The USBwiz can interface directly to MultiMediaCard/SD Cards, and the
host controller can communicate with USB drives. The USBwiz assigns
drive letter A: to a connected MultiMediaCard/SD Card and drive letters B:
to K: in sequence to a USB drive's logical units.
A quick way to experiment with the USBwiz-OEM is to attach a flash drive,
connect the board's serial port to a PC, and use a terminal program such as
Windows' Hyperterminal to send commands and receive responses. To con-
nect to a PC, connect the board's asynchronous serial-port pins to the corre-
sponding pins on a Maxim MAX3232 or similar RS-232 transceiver. If your
PC doesn't have an RS-232 port, connect the transceiver's RS-232 pins to
corresponding pins on an RS-232/USB converter. Or use an FTDI Chip to
interface the USBwiz to a PC's USB port.