AT&T 3B2/300 Technical Reference Manual page 403

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - - -
POWER
CIRCUITS
DYNAMIC
RANDOM
ACCESS
MEMORY
CONTROLLER
LEGEND:
CAS
CE
MA
MUXA
RAS
-
RE
SnEQUIP
WE
r--------------------------------,
+sv
GROUND
SIZEl[l]
SIZEO[l]
SnEQUIP(O]
MUXA09-00[l]
GO
BANKEN2[0]
BANKENl[O]
BANKENO[O]
CAS3-0(0]
WE(O]
RAS[O]
MD31-00[1]
MCBll-00[1]
I
CM523D 16-MEGABYTE RAM CARD
I
I
I
I
- -
I
I
I
I
I
I
I
I
I
MAA9-0[1)
I
MAB9-0[l)
I
I
ADDRESS MAC9-0[l)
-
DRIVERS
MAD9-0[l]
I
I
I
CE(3-0)HA[O)
CE(3-0)HB[O)
I
CE(3-0)LA[O)
I
CE(3-0)LB[O)
I
-
I
I
I
CONTROL
I
DRIVERS
I
WE(3-0)H[O)
I
WE(3-0)L[O)
-
I
-
I
-
I
I
-
RE(3-0)H[O)
I
RE(3-0)L[O)
I
-
-
I
I
_ D3!-00[l) -
.
DATA
- -
I
TRANSCEIVERS
I
CBl!-00[1]
-
I
-
I
DYNAMIC
RAM
(16M BYTE)
BANKO
o 32-1024K X I BIT
o 12-1024K X I BIT
(4M BYTE)
BANK I
o 32-1024K X I BIT
o 12-1024K X I BIT
(4M BYTE)
BANK2
o 32-1024K X I BIT
o 12-1024K X I BIT
(4M BYTE)
BANK 3
o 32-1024K X I BIT
o 12-1024K X I BIT
(4M BYTE)
L-------------------------------
Column Address Strobe
CAS Enable (High and Low Half-words)
Memory Address
Multiplexed Address
Row Address Strobe
RAS Enable (High and Low Half-words)
Slot n Equipped
Write Enable (High and Low Half-words)
Figure 3-47: CM523D 16-Megabyte RAM Card - Functional Block Diagram
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