Fujitsu M2488 CHAPTER 2 DESIGN ARCHITECTURE

M2488 PRODUCT GUIDE DESIGN ARCHITECTURE
April 1997 CG00000-011503 REV. A 2-1
CHAPTER 2
DESIGN ARCHITECTURE
2-1 INTRODUCTI ON
This chapters provides information on the principles of operation of the M2488 tape drive. This chapter
begins with a a high level description of the M2488, then progresses to a more detailed description of
the individual circuits. Refer to the appropriate paragraphs for the necessary level of detail.
2-2 OPERATION OF THE M2488
2-3 OPERATION OF THE MAG NETIC TAPE CONTROLLER (MTC )
2-4 OPERATION OF THE MAG NETIC TAPE UNIT (MTU)
2-2 OPERATION OF THE M2488
The following paragraphs describe the operation of the M2488. Refer to the block diagram in Figure 2-
1.
The M2488 is a highly reliable, compact tape unit using IBM 3490/349E compatible half-inch tape car-
tridges. It is fully contained with the power supply integrated into the compact 8-inch form factor. The
M2488 architecture consists of the magnetic tape controller (MTC) which performs the host interface,
data buffering, compression, and formatter functions and the magnetic tape unit (MTU) that performs
the mechanical control and read/write functions. Descriptions of the MTC and MTU are presented in
the following sections.
PCA-DTC
SCSI BUS HEAD
PCA-RDL
READ CIRCUIT
PCA-WTL
WRITE CIRCUI T
PCA-DVL
RS-232 CP_BUS
WDATA
DMD
PCA-SVL
PCA-OP
RS-232
Figure 2-1. M2488 Block Diagram
IPM