Usb; Ide Support - Intel BOXD865GVHZ Technical Product Specification

Intel Desktop Board D865GVHZ Technical Product Specification

1.7.2 USB

The board supports up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and
EHCI-compatible drivers.
The ICH5 provides the USB controller for all ports. The port arrangement is as follows:
•
Two ports are implemented with stacked back panel connectors, adjacent to the PS/2
connectors
•
Two ports are implemented with stacked back panel connectors, adjacent to the audio
connectors
•
Four ports are routed to two separate front panel USB connectors
✏
NOTE
Computer systems that have an unshielded cable attached to a USB port may not meet FCC
Class B requirements, even if no device is attached to the cable. Use shielded cable that meets
the requirements for full-speed devices.
For information about
The location of the USB connectors on the back panel
The location of the front panel USB connectors
The EHCI, front panel, UHCI, and USB specifications

1.7.3 IDE Support

The board provides four IDE interface connectors:
•
Two Parallel ATA IDE connectors, which support a total of four devices (two per connector)
•
Two Serial ATA IDE connectors, which support one device per connector
1.7.3.1 Parallel ATA IDE Interfaces
The ICH5's Parallel ATA IDE controller has two independent bus-mastering Parallel ATA IDE
interfaces that can be independently enabled. The Parallel ATA IDE interfaces support the
following modes:
•
Programmed I/O (PIO): processor controls data transfer.
•
8237-style DMA: DMA offloads the processor, 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 ICH5's 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.
34
Refer to
Figure 14, page 61
Figure 18, page 70
Section 1.4, page 17