Intel ECB-862 - Manual (Page 20)

ECB-862/862L
ECB-862/862L User’s Manual 9
„ Integrated PCI-mastering dual full-duplex direct-sound AC97-link-compatible
sound system. Hardware soundblaster-pro and hardware-assisted FM blocks are
included for Windows DOS box and real-mode DOS compatibility. Loopback
capability is also implemented for directing mixed audio streams into USB and
1394 speakers for high quality digital audio.
„ Two game ports and one MIDI port
„ ECP/EPP-capable parallel port
„ Standard floppy disk drive interface
„ Distributed DMA capability for support of ISA legacy DMA over the PCI bus.
Serial IRQ is also supported for docking and non-docking applications.
„ Plug and Play controller that allows complete steerability of all PCI interrupts and
internal interrupts / DMA channels to any interrupt channel. One additional
steerable interrupt channel is provided to allow plug and play and reconfigurability
of on-board peripherals for Windows family compliance.
„ Internal I/O APIC (Advanced Programmable Interrupt Controller)
2.3.4 Current PCI Bus Controller
„ PCI bus is synchronous / pseudo-synchronous to host CPU bus
„ 33 MHz operation on the primary PCI bus
„ Supports up to five PCI masters
„ Peer concurrency
„ Concurrent multiple PCI master transactions; i.e., allow PCI masters from both PCI
buses active at the same time
„ Zero wait state PCI master and slave burst transfer rate
„ PCI to system memory data streaming up to 132Mbyte/sec
„ PCI master snoop ahead and snoop filtering
„ Six levels (double-words) of CPU to PCI posted write buffers
„ Byte merging in the write buffers to reduce the number of PCI cycles and to create
further PCI bursting possibilities
„ Enhanced PCI command optimization (MRL, MRM, MWI, etc.)
„ Forty-eight levels (double-words) of post write buffers from PCI masters to DRAM
„ Sixteen levels (double-words) of prefetch buffers from DRAM for access by PCI
masters
„ Supports L1/L2 write-back forward to PCI master read to minimize PCI read latency