Intel S3200SHV - Entry Server Board Motherboard Specification page 34

Functional Architecture
The server board fully complies with the Advanced Configuration and Power Interface (ACPI)
specifications, Revision 2.0.
3.2.3.12 System Management Interface
®
The Intel ICH9 functions as a SMBus host controller and allows the processor to communicate
with SMBus slaves. This interface is compatible with most I
slave functionality. The SMBus logic exists in device 31: function 3 configuration space.
3.2.3.13 Intel
®
The Intel ICH9 integrates two thermal sensors that monitor the temperature within the die.
Those sensors support Intel
the management engine (ME) residing in the MCH and requires SPI flash to host the Intel
firmware.
®
The Intel ICH9 integrates four fan speed TACH sensors and three fan speed controllers,
PWMs. Up to four system fans can be monitored and controlled. The ICH9 implements a single
wire Simple Serial Transport (SST) bus that allows connection of up to five SST thermal or
voltage monitoring devices. The ICH9 also supports the Platform Environmental Control
Interface (PECI) that provides access to the CPU thermal data.
The server board does not support ME or Intel
fan speed.
3.2.3.14 Serial Peripheral Interface (SPI)
The Serial Peripheral Interface (SPI) is a 4-pin interface that provides a potentially lower-cost
alternative for the system flash versus the Firmware Hub on the LPC Bus. The Intel
supports two SPI flash components using two separate chip select pins. Each component can
be up to 16 MB in size and operate in SPI Fast Read Instructions at frequencies of 20 MHZ or
33 MHz.
The SPI Interface consists of the following components:
Clock (CLK)
Master Out Slave In (MOSI)
Master In Slave Out (MISO)
Chip Select (CS#)
The SPI uses a Master – Slave protocol for communication.
The SPI flash may operate in two operational modes: descriptor and non-descriptor. When
operating in non-descriptor mode, the SPI Flash can only support the BIOS through register
accesses.
When operating in descriptor mode, the ICH9 allows a single SPI flash device to store system
BIOS, Firmware, and Gigabit Ethernet EEPROM information.
22
Quiet System Technology (Intel
®
® Quiet System Technology (Intel
Intel Order Number: E14960-009
Intel® Server Boards S3200SH/S3210SH TPS
2
C devices. The ICH9 also supports
QST)
®
®
QST). Intel
® QST. The integrated BMC firmware controls the
® QST is controlled by
® QST
®
ICH9
Revision 1.8