Fujitsu manual Chapter Design Architecture, 2OPERATION of the M2488

M2488 PRODUCT GUIDE DESIGN ARCHITECTURE

CHAPTER 2

DESIGN ARCHITECTURE

2-1 INTRODUCTION

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 MAGNETIC TAPE CONTROLLER (MTC)

2-4 OPERATION OF THE MAGNETIC TAPE UNIT (MTU)

2-2OPERATION OF THE M2488

The following paragraphs describe the operation of the M2488. Refer to the block diagram in Figure 2- 1.

SCSI BUS

RS-232

		DMD	PCA-RDL
			READ CIRCUIT
IPM	PCA-DTC	WDATA	PCA-WTL
			WRITE CIRCUIT
		CP_BUS	PCA-DVL

HEAD

PCA-OP

RS-232

PCA-SVL

Figure 2-1. M2488 Block Diagram

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.

April 1997 CG00000-011503 REV. A 2-1