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VT82C596B
• UltraDMA-33/66 Master Mode PCI EIDE Controller
− Dual channel master mode PCI supporting four Enhanced IDE devices
− Transfer rate up to 22MB/sec to cover PIO mode 4, multi-word DMA mode 2 drives, and beyond
− Extension to UltraDMA-33 interface for transfer rates to 33MB/sec
− Extension to UltraDMA-66 interface for transfer rates to 66MB/sec
− Thirty-two levels (doublewords) of prefetch and write buffers
− Dual DMA engine for concurrent dual channel operation
− Bus master programming interface for SFF-8038i rev.1.0 and Windows-95 compliant
− Full scatter gather capability
− Support ATAPI compliant devices including DVD devices
− Support PCI native and ATA compatibility modes
− Complete software driver support
− Supports glue-less “Swap-Bay” option with full electrical isolation
• System Management Bus Interface
− Host interface for processor communications
− Slave interface for external SMBus masters
• Sophisticated PC98-Compatible Mobile Power Management
− Supports both ACPI (Advanced Configuration and Power Interface) and legacy (APM) power management
− ACPI v1.0 Compliant
− APM v1.2 Compliant
− CPU clock throttling and clock stop control for complete ACPI C0 to C3 state support
− PCI bus clock run and PCI/CPU clock generator stop control
− Supports multiple system suspend types: power-on suspends with flexible CPU/PCI bus reset options,
suspend to DRAM, and suspend to disk (soft-off), all with hardware automatic wake-up
− Multiple suspend power plane controls and suspend status indicators
− One idle timer, one peripheral timer and one general purpose timer, plus 24/32-bit ACPI compliant timer
− Normal, doze, sleep, suspend and conserve modes
− Global and local device power control
− System event monitoring with two event classes
− Primary and secondary interrupt differentiation for individual channels
− Dedicated input pins for power and sleep buttons, external modem ring indicator, and notebook lid open/close for
system wake-up
− Up to 22 general purpose input ports and 31 output ports
− Multiple internal and external SMI sources for flexible power management models
− Two programmable chip selects and one microcontroller chip select
− Enhanced integrated real time clock (RTC) with date alarm, month alarm, and century field
− Thermal alarm support
− Cache SRAM power-down control
− Hot docking support
− I/O pad leakage control
• Plug and Play Controller
− PCI interrupts steerable to any interrupt channel
− Dual interrupt and DMA signal steering for on-board plug and play devices
− Microsoft Windows 95TM and plug and play BIOS compliant
• Built-in NAND-tree pin scan test capability
• 0.5u, 3.3V, low power CMOS process
• Single chip 324 pin BGA
Revision 0.3 June 17, 1999
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Features