Scsi Interface Pca; Figure 6-5 Scsi Interface Pca Block Diagram - HP SureStore Optical Jukebox 160ex Service Manual

Figure 6-5
Theory of Operation

SCSI Interface PCA

SCSI Interface PCA
The SCSI interface PCA has two major functions:
• Logically connect the active host SCSI bus (single-ended or
differential) to the internal single-ended SCSI device bus.
• Operate in a LUN mapping mode.
Internally, the jukebox has a single-ended SCSI bus. The external
differential and single-ended connections are on the top of the PCA and
the single-ended bus connection to the jukebox is on the bottom. A slider
switch between the two external connectors on the top of the PCA selects
which type of input will be accepted. See Figure 6-5.
SCSI Interface PCA Block Diagram
6-12 Chapter 6