AT&T 3B2/300 Technical Reference Manual page 493

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - -
CM195W SMALL COMPUTER SYSTEMS INTERFACE HOST ADAPTER
PERIPHERAL INPUT/OUTPUT BUS INTERFACE
(BACKPLANE CONNECTOR)
'~
14
,
16K X 8
80186 CPU
20
READ ONLY
AND
,,
16
MISCELLANEOUS
MEMORY
LOGIC CIRCUITS
,
If
,
-
16
64K X 16
o IDifcVECTOR
,
DYNAMIC RANDOM
R GISTER
o PAGE REGISTER
I~ -
ACCESS MEMORY
o PCSR
-
ADDRESS
DATA
BITS 19-00[!)
u
,, BITS 15-00[1)
SCSI PROTOCOL CONTROLLER
AND MISCLLANEOUS LOGIC CIRCUITS
I~
1,
SO-PIN SCSI BUS 0 SO-PIN SCSI BUS I
CONNECTOR
CONNECTOR
Figure 3-73: CM195W SCSI Host Adapter Card - Functional Block Diagram
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