| In
this section, we've highlighted the questions
that are most commonly asked about Elexol's USB
Module devices. If your question isn't addressed
here, or if you simply want more information,
please don't hesitate to contact
us.
| Q: Can
I use the USBMod to communicate with another
USB device without a PC? |
 |
A: No. The USBMods
are slave devices which must be connected
to a host PC |
|
| Q: What are the differences
between USBMods 1,2,3 & 4? |
|
A:
USBMod1 is a module based on the FTDI 232
chip (FT8U232AM) and transfers TTL level
serial data to the PC via USB.
USBMod2 is a module based on the FTDI 245
chip (FT8U245AM) and transfers
8bit parallel data to the PC via USB.
USBMod3 is a module based on the second
generation FTDI 232 chip
(FT232BM) and transfers TTL level serial
data to the PC via USB. It has an
on-board external eeprom that is used for
USB enumeration data.
USBMod4 is a module
based on the second generation FTDI 245
chip
(FT245BM) and transfers 8bit parallel data
to the PC via USB. It has an
on-board external eeprom that is used for
USB enumeration data.
|
|
| Q: Can I use the USBIO24
to communicate with another USB device without
a PC? |
|
A: No. the USBIO24
is a slave input/output module that must
be connected to a
Host PC. |
Q:
USBMOD3 doesn't seem to be working. I connected
it to my work
computer (Windows XX)USB port and the 'Found New
Hardware Wizard' doesn't detect it.
A:
In order to make the USBMOD3 to detect under any
operating system you
will need to connect some module pins to each
other as mentioned in
the datasheet. Otherwise the module will appear
dead, this is because
of the different powering options which can be
used.
The pins which you need to connect to each other
on the module are as
follows.
1.Tie EP (Pin 9) to RSTO (pin 10)
This will allow the USB MOD3 to power up and enumerate
on the USB.
2. Tie VIO (Pin 12) to V+(Pin 13)
This will allow the data pins to drive out at
5V levels
3.Tie PCTL to low to operate in bus powered mode.
The device will detect after these pins are connected
and the FTDI
drivers can be installed. |
