PDIUSBD12
USB peripheral controller with parallel bus
Rev. 12 — 8 April 2010
Product data sheet
1. General description
The PDIUSBD12 is a cost- and feature-optimized USB peripheral controller. It is normally
used in microcontroller-based systems and communicates with the system microcontroller
over the high-speed general-purpose parallel interface. It also supports local DMA
transfer.
This modular approach to implementing a USB interface allows the designer to choose
the optimum system microcontroller from the wide variety available. This flexibility cuts
down development time, risks and costs, by allowing the use of the existing architecture,
minimizing firmware investments. This results in the fastest way to develop the most
cost-effective USB peripheral solution.
The PDIUSBD12 fully conforms to Universal Serial Bus Specification Rev. 2.0, supporting
data transfer at full-speed (12 Mbit/s). It is also designed to be compliant with most device
class specifications: imaging class, mass storage devices, communication devices,
printing devices and human interface devices. The PDIUSBD12 is ideally suited for many
peripherals, such as printer, scanner, external mass storage (Zip drive) and digital still
camera. It offers an immediate cost reduction for applications that currently use SCSI
implementations.
The PDIUSBD12 low suspend power consumption along with the LazyClock output allows
for easy implementation of equipment that is compliant to the ACPI, OnNow and USB
power management requirements. The low operating power allows the implementation of
bus powered peripherals.
It also incorporates features, such as SoftConnect1, GoodLink2, programmable clock
output, low frequency crystal oscillator, and integration of termination resistors. All of
these features contribute to significant cost savings in the system implementation and at
the same time ease the implementation of advanced USB functionality into peripherals.
2. Features
Complies with Universal Serial Bus specification Rev. 2.0
Supports data transfer at full-speed (12 Mbit/s)
High performance USB peripheral controller with integrated SIE, FIFO memory,
transceiver and voltage regulator
Compliant with most device class specifications
High-speed (2 MB/s) parallel interface to any external microcontroller or
microprocessor
1.
SoftConnect is a trademark of ST-Ericsson.
2.
GoodLink is a trademark of ST-Ericsson.
