Intel SDS2 manual Serial Ports, Floppy, Keyboard and Mouse, Parallel Port, Real-time Clock

Intel® Server Board SDS2		I/O Subsystem
Pin #	Signal Name	Description
35	N_BMC_SWIN
36	N_BMCPWRN	Power LED from BMC
37	N_EXTEN_00	External Event
38	N_SUPERSCI_00	System Control Interrupt used to detect wake-up events
45	N_SIO_CLK_RTC_BMC	Real Time Clock output to BMC
49	N_P2_PME	Power Management Event from PCI Bus (P64-B segment)
50	N_P3_PME	Power Management Event from PCI Bus (P64-C segment)
51	N_FP_PWR_LED+00	Power LED indicator to Front Panel
52	N_LAN_PME	Power Management Event from PCI Bus (P32-A segment)
53	N_BMC_SCIN	System Management Interrupt from BMC
125	KBCLKL	Keyboard Clock
126	KBDATL	Keyboard Data
127	MSCLKL	Mouse Clock
128	MSDATL	Mouse Data

4.6.1.2Serial Ports

Two serial ports are provided on the Server Board, a 9-pin DB9 connector is located on the rear I/O to supply COM1 and a 10-pin header on the Server Board provides COM2.

4.6.1.3Floppy

The FDC in the SIO is functionally compatible with floppy disk controllers in the DP8473 and N844077. All the FDC functions are integrated into the SIO including analog data separator and 16-byte FIFO.

4.6.1.4Keyboard and Mouse

Two PS/2 ports are provided for keyboard and mouse and are mounted within a single stacked housing. The mouse connector is stacked over the keyboard connector.

4.6.1.5Parallel Port

The parallel port is supported on the Server Board through the rear I/O.

4.6.1.6Real-time Clock

The SIO contains a real-time clock with external battery backup. The device also contains 242 bytes of general purpose battery-backed CMOS RAM.

4.6.1.7Wake-up Control

The SIO contains functionality that allows various events to control the power-on and power-off of the system.

Revision 1.2	19
Order Number:	A85874-002