Intel D815EEA User Manual

Product Description
23
1.6.1 Intel
®
82815E Graphics and Memory Controller Hub (GMCH)
The GMCH provides the following:
• An integrated Synchronous DRAM memory controller with autodetection of SDRAM
• An interface for a single AGP device or a Graphics Performance Accelerator (GPA) card
• An interface for a digital video output (DVO) connector for a flat panel, digital CRT, or
TV-out
• Support for ACPI Rev 1.0 and APM Rev 1.2 compliant power management
1.6.2 Intel
®
82801BA I/O Controller Hub (ICH2)
The ICH2 provides the following:
• 33 MHz PCI bus interface
• Support for up to six PCI master devices
• Low Pin Count (LPC) interface that supports an LPC-compatible I/O controller
• Support for two Master/DMA devices
• Integrated IDE controller that supports Ultra DMA (33 MB/sec) and ATA-66/100 mode
(66 MB/sec, 100 MB/sec)
• Integrated LAN Media Access Controller
• Universal Serial Bus interface with two USB controllers providing four ports in a
UHCI Implementation
• Power management logic for ACPI Rev 1.0b compliance
• System Management Bus (SMBus clock and data lines also routed to PCI bus connector 2)
• Real-Time Clock with 256-byte battery-backed CMOS RAM
• AC’97 digital link for Audio and telephony codecs, including:
 AC’97 2.1 compliance
 Logic for PCM in, PCM out, Mic input, Modem in, and Modem out
 Separate PCI functions for audio and modem
 Communications Network Riser (CNR) interface
1.6.2.1 IDE Interfaces
The ICH2’s IDE controller has two independent bus-mastering IDE interfaces that can be
independently enabled. The IDE interfaces support the following modes:
• Programmed I/O (PIO): CPU controls data transfer
• 8237-style DMA: DMA offloads the CPU, supporting transfer rates of up to 16 MB/sec
• Ultra DMA: DMA protocol on IDE bus supporting host and target throttling and transfer rates
of up to 33 MB/sec.
• Ultra ATA-66: DMA protocol on IDE bus supporting host and target throttling and transfer
rates of up to 66 MB/sec. ATA-66 protocol is similar to ATA-33 and is device driver
compatible. ATA-66 uses faster timings and requires a specialized cable to reduce reflections,
noise, and inductive coupling.
• Ultra ATA-100: DMA protocol on IDE bus allows host and target throttling. The ICH2 Ultra
ATA-100 logic can achieve read transfer rates up to 100 MB/sec and write transfer rates up to
88 MB/sec. The higher quality cable used for ATA-66 DMA support is adequate to reduce
reflections, noise, and inductive coupling for ATA-100 operation.

Intel D815EEA Specifications

General

Brand	Intel
Model	D815EEA
Category	Motherboard
Language	English