Functional Architecture
Intel® Server Boards SE7320SP2 and SE7525GP2
Revision
4.0
40
3.6.8
USB 2.0 Support
The USB controller functionality integrated into Intel
®
6300ESB I/O controller provides the
server board with the interface for up to four USB 2.0 ports. Two external connectors are
located on the back edge of the server board. One internal 2x5 header is provided which is
capable of supporting an additional two optional connectors.
3.6.9
Super I/O Chip
The Server I/O is the National Semiconductor* PC87427 controller. It is located on the Intel
®
6300ESB I/O controller LPC bus. For LPC and SMBus access, the PC87427features a fast X-
Bus, over which boot flash and I/O devices can be accessed. The PC87427supports X-Bus
address line forcing (to 0 or 1) to access two BIOS code and data sets. The SMBus also
controls serial port float, RTC access, and serial port interconnection (snoop and take-over
modes). The PC87427 system health support includes a serial interface to LMPC0 health
sensors, fan monitoring and control, and a chassis intrusion detector. The PC87427 also
incorporates a Floppy Disk controller (FDC), two serial ports (UARTs), a keyboard and mouse
controller (KBC), General-Purpose I/O (GPIO), GPIO extension for additional off-chip GPIO
ports, and an interrupt serializer for parallel IRQs.
PC87427 features:
3.3V operation, Standby powered.
Legacy modules: FDC, two Serial ports (UARTs) and a keyboard and mouse controller
(KBC).
LPC interface
8/16-bit fast X-Bus extension for boot flash, memory and I/O.
Two sets of BIOS code and data support, for main and back-up BIOS.
System health support, including LMPC sensor interface, fan monitor/control, and
chassis intrusion detection, for all configurations (i.e., with or without a BMC or mBMC).
Serial Interface for manageability (Serial Interface M). Two-to-one internally multiplexing
of Serial Ports 1 and 2.
One external serial port
One internal serial port
52 GPIO ports with a variety of wake-up events plus GPIO extension for additional off-
chip GPIO ports.
Watchdog for autonomous system recovery for BIOS Boot process and for operating
system use.
Pulse-Width-Modulated Fan Speed Control and Fan Tachometer Monitoring
Summary of Contents for SE7320SP2 - 800MHZ Ecc Ddr Xeon
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