AT&T 3B2/300 Technical Reference Manual page 395

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - -
POWER
CIRCUITS
DUAL
PORT
DYNAMIC
RANDOM
ACCESS
MEMORY
CONTROLLER
-
-
LEGEND:
CAS
CE
MA
MCEQUIP
MUXA
NC
RAS
RE
WE
r-------------------------------,
I
-
+sv
I
CM191C 1-MEGABYTE RAM CARD
: (SURFACE MOUNTED)
I
-
GROUND
I
I
ONEBANK[O]
I
SIZE64K[O]
I
I
I
MCEQUIP[O]
I
I
MUXA9-1[1]
I
ADDRESS
DRIVERS
MAB-0[1]
I
MUXAO[l]
I
I
DYNAMIC
I NC
RAM
BANKENl[O]
I
(lM BYTE)
I
NC
I
I
BANKENO[O]
I
I
CE3-0[0]
o 8-256K X 4 BIT
I
CONTROL
o 4-256K X I BIT
CAS3-0[0]
I
DRIVERS
WEl-0[0]
.
-
WE[O]
I
REl-0[0]
.
RAS[O]
I
I
I
-
MD31-00[l]
I
I
MPAR3-0[1]
I
.
I
I
I
L-----------------------------
Column Address Strobe
CAS Enable
Memory Address
Memory Card Equipped
Multiplexed Address
No Connection
Row Address Strobe
RAS Enable
Write Enable
__ .J
Figure 3-41: CM191C 1-Megabyte, Surface Mounted, RAM Card - Functional Block Diagram
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