Intel SE7505VB2 Product Specification - Page 25

PCI Bus P32-A I/O Subsystem, PCI Bus Master IDE Interface, USB Interface - sata

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Intel® Server Board SE7505VB2 Functional Architecture The primary role of the ICH4 is to provide the gateway to all PC-compatible I/O devices and features. The board uses the following the ICH4 features: PCI bus interface LPC bus interface IDE interface, with Ultra DMA 100 capability Universal Serial Bus (USB) 2.0 interface PC-compatible timer/counter and DMA controllers APIC and 8259 interrupt controller Power management System RTC General purpose I/O (GPIO) The following are the descriptions of how each supported feature is used on the board . 3.2.4.1 PCI Bus P32-A I/O Subsystem The ICH4 provides a legacy 32-bit PCI subsystem and acts as the central resource on this PCI interface. P32-A supports the following embedded devices and connectors: An ATI Rage XL video controller with 3D/2D graphics accelerator Silicon Image 3112A dual channel SATA controller One Intel® 82550PM network controller Two expansion slots capable of supporting full length PCI add-in cards operating at 33 MHz 3.2.4.2 PCI Bus Master IDE Interface The ICH4 acts as a PCI-based Ultra DMA 100 IDE controller that supports programmed I/O transfers and bus master IDE transfers. The ICH4 supports two IDE channels, supporting two drives each (drives 0 and 1). The baseboard provides two 40-pin (2x20) IDE connectors to access the IDE functionality. The IDE interface supports Ultra DMA 100 Synchronous DMA Mode transfers on each 40-pin connector. 3.2.4.3 USB Interface The ICH4 contains three USB 2.0 controllers and four USB hubs. The USB controller moves data between main memory and up to six USB connectors. All ports function identically and with the same bandwidth. The SE7505VB2 server board implements four ports on the board. The baseboard provides three external USB ports on the back of the server board. The triplestack USB connector is located within the standard ATX I/O panel area next to the keyboard and mouse housing. The USB specification defines the external connectors. The fourth USB port is optional and can be accessed by cabling from an internal 9-pin connector located on the baseboard to an external USB port located either in front or the rear of a given chassis. Revision 1.2 25 Intel part number C32194-002

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Intel® Server Board SE7505VB2
Functional Architecture
The primary role of the ICH4 is to provide the gateway to all PC-compatible I/O devices and
features. The board uses the following the ICH4 features:
±
PCI bus interface
±
LPC bus interface
±
IDE interface, with Ultra DMA 100 capability
±
Universal Serial Bus (USB) 2.0 interface
±
PC-compatible timer/counter and DMA controllers
±
APIC and 8259 interrupt controller
±
Power management
±
System RTC
±
General purpose I/O (GPIO)
The following are the descriptions of how each supported feature is used on the board .
3.2.4.1
PCI Bus P32-A I/O Subsystem
The ICH4 provides a legacy 32-bit PCI subsystem and acts as the central resource on this PCI
interface. P32-A supports the following embedded devices and connectors:
±
An ATI Rage XL video controller with 3D/2D graphics accelerator
±
Silicon Image 3112A dual channel SATA controller
±
One Intel
®
82550PM network controller
±
Two expansion slots capable of supporting full length PCI add-in cards operating at 33 MHz
3.2.4.2
PCI Bus Master IDE Interface
The ICH4 acts as a PCI-based Ultra DMA 100 IDE controller that supports programmed I/O
transfers and bus master IDE transfers. The ICH4 supports two IDE channels, supporting two
drives each (drives 0 and 1). The baseboard provides two 40-pin (2x20) IDE connectors to
access the IDE functionality.
The IDE interface supports Ultra DMA 100 Synchronous DMA Mode transfers on each 40-pin
connector.
3.2.4.3
USB Interface
The ICH4 contains three USB 2.0 controllers and four USB hubs. The USB controller moves
data between main memory and up to six USB connectors. All ports function identically and with
the same bandwidth. The SE7505VB2 server board implements four ports on the board.
The baseboard provides three external USB ports on the back of the server board. The triple-
stack USB connector is located within the standard ATX I/O panel area next to the keyboard
and mouse housing. The USB specification defines the external connectors.
The fourth USB port is optional and can be accessed by cabling from an internal 9-pin
connector located on the baseboard to an external USB port located either in front or the rear of
a given chassis.
Revision 1.2
Intel part number C32194-002
25