User`s guide

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Unlike traditional PIO/DMA mode, which only uses the rising edge of IDE command signal to
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ransfer data. UDMA/33 uses both rising edge and falling edge, the data transfer rate is double of
the PIO mode 4 or DMA mode 2
16.6MB/s x2 = 33MB/s
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USB is a 4-pin serial peripheral bus that is capable of cascading low/medium speed peripherals
(less than 10Mbit/s) such as keyboard, mouse, joystick, scanner, printer and modem. With USB, the
traditional complex cables from back panel of your PC can be eliminated.
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NEC’s Virtual Channel Memory (VCM) is a new DRAM core architecture that dramatically improves
the memory system’s ability to service multimedia requirements. VCM increases memory bus
efficiency and performance of any DRAM technology by providing a set of fast static registers
between the memory core and I/O pins. Using VCM technology results in reduced data access
latency and reduced power consumption.