SCSI Backplane Board | Intel® Server Platform SR6850HW4 TPS |
7.2.8Programmed Devices
Four programmed devices are on the SCSI Backplane Board:
FLASH: Flash contains program code to be run by the onboard microcontroller, the
HSC. Memory configuration: 512 K x 8.
Field Replaceable Unit (FRU): The FRU is programmed at the factory. Memory
Configuration: 256 x 8 serial.
USB hub circuit: The USB hub circuit has a serial EEPROM programmed with
configuration data for the USB hub controller. Memory Configuration: 256 x 8 serial.
Programmable Logic Device (PLD): The PLD governs the SCSI power control circuit, controls LEDs, and provides a deglitching function for the Flash chips. The PLD is independently
7.3Signal Descriptions
The following notations are used to describe the signal type, from the perspective of the Server Platform SR6850HW4 SCSI Backplane Board:
I Input pin to the Server Platform SR6850HW4 SCSI Backplane Board
O Output pin from the Server Platform SR6850HW4 SCSI Backplane Board
| I/O | |
| PWR | Power supply pin |
The signal description also includes the type of buffer used for the particular signal:
| LVD | Low Voltage Differential SCSI |
| SE | Standard Single Ended SCSI |
| TTL | 5V TTL signals |
| CMOS | 5V CMOS signals |
| Analog | Typically a voltage reference or specialty power supply |
| hs | This suffix is added to indicate |
|
| modifications subject to review |
78 | Revision 1.0 |
| Intel order number |