FT122 Datasheet, PDF (1/47 Pages) Future Technology Devices International Ltd. – FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL BUS IC Datasheet Version 1.1

Document No.: FT_000647
FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL
BUS IC Datasheet Version 1.1
Clearance No.: FTDI# 313
Future Technology Devices
International Ltd.
FT122
(Enhanced USB Device
Controller with Parallel Bus
IC)
The FT122 is a USB generic interface
controller with the following advanced ^
features:

 USB 2.0 Full Speed compatible

 High performance USB device controller with
integrated SIE, endpoint buffer, transceiver
and voltage regulators

 Fully integrated clock generation with no
external crystal required

 Supports 8-bit parallel interface to external
microcontroller

 Supports DMA operation

 Supports up to 8 bi-directional endpoints with
total 2K bytes endpoint buffer

 Max packet size is 504 bytes for isochronous ^
endpoint and 64 bytes for control/bulk/
interrupt endpoint

 Double buffer scheme for any endpoint _
increases data transfer throughput
Dedicated clock output pin with programmable
clock frequency (4 – 24 MHz)
30 kHz output clock provided during suspend
Integrated DP pull-up resistor for USB
connection
USB connection indicator that toggles with USB
transmit and receive activities
Supports bus-powered or self-powered
applications
VCC power supply operation at 3.3V or 5V
Internal 1.8V and 3.3V LDO regulators
VCC IO level range from 1.8V to 3.3V
Integrated power-on-reset circuit
UHCI/OHCI/EHCI host controller compatible
-40°C to 85°C extended operating temperature
range
 Multiple interrupt modes to facilitate both bulk _{ Available in Pb-free TSSOP-28 and QFN-28}
and isochronous transfers
packages (RoHS compliant)
 USB Battery Charger detection allowing
optimized charging profile
Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced
in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are
supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology
Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your
statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in
which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary
information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by
the publication of this document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow
G41 1HH United Kingdom. Scotland Registered Company Number: SC136640
Copyright © 2014 Future Technology Devices International Limited
1