Premio Computer Apollo/Shadowhawk - Manual (Page 48)

Product Description
25
1.8.1 AGP
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NOTE
The AGP connector is keyed for 1.5 V AGP cards only. Do not attempt to install a legacy 3.3 V
AGP card. The AGP connector is not mechanically compatible with legacy 3.3 V AGP cards.
The AGP connector supports AGP add-in cards with 1.5 V Switching Voltage Level (SVL).
Legacy 3.3 V AGP cards are not supported.
For information about Refer to
The location of the AGP connector Figure 1, page 14
The signal names of the AGP connector Table 37, page 67
AGP is a high-performance interface for graphics-intensive applications, such as 3D applications.
While based on the PCI Local Bus Specification, Rev. 2.1, AGP is independent of the PCI bus and
is intended for exclusive use with graphical display devices. AGP overcomes certain limitations of
the PCI bus related to handling large amounts of graphics data with the following features:
• Pipelined memory read and write operations that hide memory access latency
• Demultiplexing of address and data on the bus for nearly 100 percent efficiency
For information about Refer to
Obtaining the Accelerated Graphics Port Interface Specification Section 1.5, page 18
1.8.2 USB
There are two USB configurations, depending on which I/O controller is used on the board, as
follows:
• The USB configuration for boards with the SMSC LPC47M142 I/O controller is described in
Section 1.8.2.1
• The USB configuration for boards with the SMSC LPC47M132 I/O controller is described in
Section 1.8.2.2
The D845HV and D845WN boards fully support UHCI and use UHCI-compatible software
drivers.
✏
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.