Sharp AR-M350N/M450N Service Manual page 22

SDRAM Block ( Standard & Option )
MAA[12:0]
System
Controller
IC19
456pin-
BGA
SDA,SCL
MD[63:0]
SDQMA[7:0]
MWE
MCS0
MRASA
MCASA
BSEL0A,1A
CKEA
MWE
MCS1A,2A
MRASA
MCASA
BSEL0A,1A
CKEA
AR-M350U CIRCUIT DIAGRAM 9-4
DRCLK
MEMCLK0
SDRAM
IC4, 5,6,7
128Mbit x 4
MEMCLK1,2,3,4
DIMM Slot
CN3
(64,128,256MB)
OSC
X3
66.666Mhz
Clock
buffer
IC9