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Description

The PDIUSBD12 is a cost and feature optimized USB device. 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.

Features

■ Complies with the Universal Serial Bus specification Rev. 2.0 (basic speed)

■ High performance USB interface device with integrated SIE, FIFO memory, transceiver and voltage regulator

■ Compliant with most Device Class specifications

■ High-speed (2 Mbytes/s) parallel interface to any external microcontroller or microprocessor

■ Fully autonomous DMA operation

■ Integrated 320 bytes of multi-configuration FIFO memory

■ Double buffering scheme for main endpoint increases throughput and eases real-time data transfer

■ Data transfer rates: 1 Mbytes/s achievable in Bulk mode, 1 Mbits/s achievable in Isochronous mode

■ Bus-powered capability with very good EMI performance

■ Controllable LazyClock output during suspend

■ Software controllable connection to the USB bus (SoftConnect?)

■ Good USB connection indicator that blinks with traffic (GoodLink?)

■ Programmable clock frequency output

■ Complies with the ACPI, OnNOW and USB power management requirements

■ Internal Power-on reset and low-voltage reset circuit

■ Available in SO28 and TSSOP28 pin packages

■ Full industrial grade operation from ?40 to +85 °C

■ Higher than 8 kV in-circuit ESD protection lowers cost of extra components

■ Full-scan design with high fault coverage (>99) ensures high quality

■ Operation with dual voltages: 3.3 ±0.3 V or extended 5 V supply range of 4.0 to 5.5 V

■ Multiple interrupt modes to facilitate both bulk and isochronous transfers.