Table of Contents
Advertisement
4.2.1.6
Wake-up Control
The Super IO contains functionality that allows various events to control the power-on and
power-off the system.
4.2.2
BIOS Flash
The board incorporates an Intel®
high-performance 32-megabit memory component that provides 2096K x 16 of BIOS and non-
volatile storage space. The flash device is connected through the X Bus from Super IO.
4.2.3
System Health Support
I2C interface to LM96000 sensors
Fan Monitor and Control (FMC)
— One PWM-based fan controls
— Software or local temperature feedback control
Chassis intrusion detection
5.
I/O Subsystem
5.1
PCI Subsystem
The primary I/O buses for the SE7221BK1-E are 3 independent PCI bus segments (4
independent segments with SE7221BK1LX sku) with PCI, PCI-E and two PCI-X buses. The PCI
buses comply with the PCI Local Bus Specification, Rev 2.3. The P32-A bus segment is
directed through the ICH6R. The P32-B and P64-C bus segment are independently configured
to PXH that is through ICH6R by PCI Express* x 4 interface. The PCI-E x8 bus is directed
through the GMCH. The table below lists the characteristics of the three PCI bus segments.
PCI Bus Segment
Voltage
PCI
5V
PCI-X
3.3V
PCI-E (x8)
3.3V
5.1.1
P32-A: 32-bit/33-MHz PCI Subsystem
All 32-bit/33-MHz PCI I/O for the board is directed through the ICH6R. The 32-bit/33-MHz PCI
segment created by the ICH6R is known as the P32-A segment. The P32-A segment supports
the following embedded devices and connectors:
One 10/100/1000-T Network Interface Controller: Intel® 82541PI Fast Ethernet
Controller.
5.1.1.1
Device IDs (IDSEL)
Each device under the PCI hub bridge has its IDSEL signal connected to one bit of AD [31:16],
which acts as a chip select on the PCI bus segment in configuration cycles. This determines a
14
®
28F320C3 flash memory component. The 28F320C3 is a
Table 5. PCI Bus Segment Characteristics
Width
Speed
32 bits
33MHz
64 bits
66/100MHz P64-C
8 lanes
100MHz
SE7221BK1-E Technical Product Specification
Type
PCI I/O Card Slots
P32-A
Slot 1
Slot 4; Slot 5, (Slot 6 through riser card)
Slot 6
Advertisement
Table of Contents
