Description:

• The PCI0646U is an advanced version of the PCI0646, adding Ultra DMA support for enhanced performance.
• Offers high-speed PIO and bus master data transfers.
• Achieves up to 20 MB/Sec transfer rates in DMA mode and up to 16.8 MB/Sec in PIO mode.
• Two IDE channels supporting up to 4 IDE drives.
• Surpasses and supports Enhanced IDE and Fast PIO timing modes 3, 4, and beyond.
• Supports multi-word and single-word DMA timing modes 0, 1, 2, and beyond.
• Compatible with CMD's IDE Tape Commander, WinRAID, and Advanced WinRAID software products.
• Fully supports PCI-IDE and Plug-and-Play (PnP) specifications.
• Efficient data transfer between PCI and IDE bus, ideal for multi-tasking operating systems.
• To prevent bus contention and system hang, a procedure involving reading the Bus Master IDE Status Register (BMIDESRx) is recommended.
• Maintains compatibility with all existing IDE drives and software drivers for optimal performance and data transfer reliability.