Intel S3000PT - Server Board Motherboard Specification page 20

Functional Architecture
Power management
System RTC
Supports the SMBus 2.0 Specification
General-purpose I/O (GPIO)
The following are the descriptions of how each supporte d feature is used for the Intel® ICH7R
controller on the board.
3.2.2.1.1 SATA Controller
The Intel® ICH7R controller has an integrated SATA host controller that supports independent
DMA operation on four ports and supports data transfer rates of up to 3.0 Gb/s (300 MB/s).
3.2.2.2 Compatibility Modules (DMA Controller, Timer/Counters, Interrupt
Controller)
The DMA controller incorporates the logic of two Intel® 82C37 DMA controllers, with seven
independently programmable channels. Channels 0 –3 are hardwired to 8-bit, count-by-byte
transfers, and channels 5–7 are hardwired to 16-bit, count-by-word transfers. Any two of the
seven DMA channels can be programmed to support fast Type -F transfers.
The timer/counter block contains three counters that are equivalent in function to t hose found in
one Intel® 82C54 programmable interval timer. These three counters are combined to provide
the system timer function, and speaker tone. The 14.31818 -MHz oscillator input provides the
clock source for these three counters.
The Intel® ICH7R controller provides an ISA-Compatible Programmable Interrupt Controller
(PIC) that incorporates the functionality of two, 82C59 interrupt controllers. The two interrupt
controllers are cascaded so that 14 external and two internal interrupts are possible. In addition,
the Intel® ICH7R controller supports a serial interrupt scheme.
All of the registers in these modules can be read and restored. This is required to save and
restore the system state after power has been removed and restored to the platform.
3.2.2.2.1 Advanced Programmable Interrupt Controller (APIC)
In addition to the standard ISA compatible Programmable Interrupt controller (PIC) described in
the previous section, the Intel® ICH7R incorporates the Advanced Programmable Interrupt
Controller (APIC).
3.2.2.2.2 Universal Serial Bus (USB) Controller
The Intel® ICH7R controller contains one EHCI* USB 2.0 controller and four USB ports. The
USB controller moves data between main memory and up to four USB connectors. All ports
function identically and with the same bandwidth . The Intel® Server Board S3000PT
implements four ports on the board.
Two external USB ports are provided on the back of the server board. The Universal Serial Bus
Specification, Revision 1.1, defines the external connectors.
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Intel® Server Board S3000PT TPS
Revision 1.3