Philips MC-D370/21M - Page 49

9-3 9-3
256Kx16(4Mbit) DYNAMIC RAM
IC41LV16256
FUNCTIONAL BLOCK DIAGRAM
OE
WE
LCAS
UCAS
CAS WE
OE
DATA I/O BUS
COLUMN DECODERS
SENSE AMPLIFIERS
MEMORY ARRAY
262,144 x 16
ROW DECODER
DATA I/O BUFFERS
CAS
CLOCK
GENERATOR
WE
CONTROL
LOGICS
OE
CONTROL
LOGIC
I/O0-I/O15
RAS
RAS
A0-A8
RAS
CLOCK
GENERATOR
REFRESH
COUNTER
ADDRESS
BUFFERS
PIN DESCRIPTIONS
A0-A8 Address Inputs
I/O0-15 Data Inputs/Outputs
WE Write Enable
OE Output Enable
RAS Row Address Strobe
UCAS Upper Column Address Strobe
LCAS Lower Column Address Strobe
Vcc Power
GND Ground
NC No Connection
24Bit, 192KHz 6CHANNEL D/A CONVERTER
CS4340
BLOCK DIAGRAM