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MP3 NG: A Next Generation Consumer Platform
XAPP169 (v1.0) November 24, 1999 www.xilinx.com 9
1-800-255-7778
R
Micron SDRAM
Memory
The SDRAM memory chosen for this design is the MT48LC1M16A1S - 512K x 16 x 2 bank
device from Micron Semiconductor. This device is available in speed grades from 125 to 166
MHz operating over an LVTTL synchronous interface. Figure 10 shows the block diagram for
this device. Figure 11 shows the MT48LC1M16A1 read timing of the device. The complete data
sheet for the MT48LC1M16 can be found at the following URL:
http://www.micron.com/mti/msp/pdf/datasheets/16MSDRAMx16.pdf
CE
CLE
R/B
I/O0 - 7
WE
ALE
RE
Busy
00h or 01h
A0 ~ A 7
A9 ~ A16
A17 ~ A 22
Dout N Dout N+1 Dout N+2
Dout N+3 Dout 527
Column
Address
Page(Row)
Address
tWB
tAR2
tR
tRC
tRHZ
tRR
tCHZ
tCEH
tRB
tCRY
tWC
»
»»
Figure 9: KM29U64000T Read Timing
(Courtesy Samsung Semiconductor)