Avago Technologies LSI21040 - Manual (Page 14)

3.75 pc 10.25 pc 11.25 pc 38.25 pc
4.333 pc
48.583 pc
52.5 pc
34.5 pc
44.25 pc
1-4 Using the LSI21040
•
Provides SCSI termination power (TERMPWR) source with
autoresetting circuit protection device
•
Includes 8 Kbytes internal RAM for SCRIPTS instruction storage for
each channel
•
Supports SCSI Plug and Play
•
Supports variable block size and scatter/gather data transfers
•
Performs complex bus sequences without interrupts, including
restore data pointers
•
Contains a serial EEPROM for user configuration utility
•
Provides SCSI bus activity LED connector for each channel on one
connector
1.2.3 Board Characteristics
The LSI21040 characteristics are:
•
PCI board dimensions: 152.4 x 88.90 mm (6.875 x 3.99 inches)
•
PCI Universal 64-bit card edge connector
•
One high density 68-pin external connector
•
Two high density 68-pin internal connectors
•
One 50-pin internal ribbon connector
•
SCSI Bus Activity LED connector
In Chapter 3, “Specifying the Technical Characteristics,” Figure 3.1
illustrates the mechanical drawing for this host adapter board.
1.2.4 SCSI Bus Activity LED Connector
A SCSI Bus Activity LED connector indicates the status of the SCSI bus
when an LED is attached. This LED lights when the SCSI bus is
transferring information.