Scsi Controller; Figure 32. Block Diagram-Scsi Controller Dat Models - Seagate STD124000N Product Manual

Chapter 8

SCSI Controller

To Drive
Electronics
TXD
ADBCLK
DADAT
FLASH
128K x 16
PROM
RS232
V50
R x d
T x d Microprocessor
Figure 32. Block Diagram—SCSI Controller DAT Models
Page 74
Control
Address
SCK
SDI
SDD
DRAM EEPROM
1 Mbyte 512 BYTES
Data
Address
Control
Dictionary
Clock
SRAM
Gen.
8K x 24
Theory of Operations
DDS LSI
SCSI/Data
Compression
LSI
To Drive
Electronics
LED 1
LED 2
LED 3
LED 4
RXD
TXCLK
ADDAT
SPAW – N
SPSTB – N
SCSI BUS
DAT Drives