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Intel® Server Board SE7320SP2 & Intel Server Board SE7525GP2 TPS Functional Architecture
Revision 2.0
57
3.6.9.2 Serial Ports
Both the SE7320SP2 and server board SE7525GP2s provide two serial ports: an external DB9
Serial port, and an internal DH-10 Serial header. The following sub-sections provide details on
the use of the serial ports.
3.6.9.2.1 Serial Port A
Serial A is an external 9-pin DB-9 connector that is located on the back edge of the server board.
3.6.9.2.2 Serial Port B
Serial B is an optional port, accessed through a 9-pin internal DH-10 header. A standard DH-10
to DB9 cable can be used to direct Serial A out the back of a given chassis. The Serial B
interface follows the standard RS232 pin-out as defined in the following table.
Table 14: Serial B Header Pin-out
Pin Signal Name Serial Port A Header Pin-out
1 DCD
2 DSR
3 RX
4 RTS
5 TX
6 CTS
7 DTR
8 RI
9 GND
3.6.9.3 Floppy Disk Controller
The 34 pin floppy disk controller (FDC) in the SIO is functionally compatible with floppy disk
controllers in the DP8473 and N844077. All FDC functions are integrated into the SIO including
analog data separator and 16-byte FIFO.
3.6.9.4 Keyboard and Mouse
Dual stacked PS/2 ports, located on the back edge of the server board, are provided for
keyboard and mouse support. Either port can support a mouse or keyboard. Neither port will
support “hot plugging” or connector insertion while the system is turned on.
3.6.9.5 Wake-up Control
The Super I/O contains functionality that allows various events to control the power-on and
power-off the system.
3.6.10 BIOS Flash
An Intel 3 Volt Advanced+ Boot Block 28F320C3 Flash memory component is used as the BIOS
flash device. The 28F320C3 is a high-performance 32-megabit memory component that
provides 2048K x 16 (4MB) of BIOS and non-volatile storage space. The flash device is
connected through the X-bus from the SIO.