Ide Interfaces; Usb - Intel D815EGEWLU - P3 Socket 370 MicroATX Motherboard Specification

1.7.1 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.
•
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 Ultra DMA and is device driver compatible.
•
ATA-100: DMA protocol on IDE bus allows host and target throttling. The ICH2 ATA-100
logic can achieve read transfer rates up to 100 MB/sec and write transfer rates up to
88 MB/sec.
✏
NOTE
ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections,
noise, and inductive coupling.
The IDE interfaces also support ATAPI devices (such as CD-ROM drives) and ATA devices using
the transfer modes listed in Table 64 on page 95.
The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS)
translation modes. The drive reports the transfer rate and translation mode to the BIOS.
The D815EGEW board supports Laser Servo (LS-120) diskette technology through its IDE
interfaces. The LS-120 drive can be configured as a boot device by setting the BIOS Setup
program's Boot menu to one of the following:
•
ARMD-FDD (ATAPI removable media device – floppy disk drive)
•
ARMD-HDD (ATAPI removable media device – hard disk drive)
For information about
The location of the IDE connectors
The signal names of the IDE connectors
BIOS Setup program's Boot menu

1.7.2 USB

The D815EGEW board has two USB ports; one USB peripheral can be connected to each port.
For more than two USB devices, an external hub can be connected to any of the ports. The
D815EGEW board's two USB ports are implemented with stacked back panel connectors, routed
through the ICH2. The board contains a jumper block for enabling/disabling the Wake from USB
feature.
The D815EGEW board fully supports the Universal Hub Controller Interface (UHCI).
Product Description
Refer to
Figure 9, page 54
Table 37, page 56
Table 71, page 103
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