Technical data

Block Diagram
A-7
DIGITAL Server 3220/3220R
Keyboard/Mouse Connector Pin Assignments
Pin Number Function
1Data
2 Reserved
3 Ground
4 +5V dc
5Clock
6 Reserved
SCSI Interface
The main logic board includes the PCI SCSI interface through a SYMBIOS
SYSC896 controller. This is a dual channel, wide Ultra2 (80 MB/s) controller that
allows increased internal SCSI connectivity and increased cable length with low
voltage differential (LVD) signaling for external SCSI devices. The chip has a local
memory bus for storage of the BIOS ROM in flash memory. The chip allows either
single-ended or LVD transfers and supports external high-voltage differential
transceivers.