Xilinx XAPP169 사용자 설명서
MP3 NG: A Next Generation Consumer Platform
XAPP169 (v1.0) November 24, 1999
9
1-800-255-7778
R
Micron SDRAM
Memory
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.
device from Micron Semiconductor. This device is available in speed grades from 125 to 166
MHz operating over an LVTTL synchronous interface.
shows the block diagram for
this device.
shows the MT48LC1M16A1 read timing of the device. The complete data
sheet for the MT48LC1M16 can be found at the following URL:
CE
CLE
R/ B
I/O
0
-
7
WE
ALE
RE
Busy
00h or 01h
A
0
~ A
7
A
9
~ A
16
A
17
~ A
22
Dout N
Dout N+1
Dout N+2
Dout N+3
Dout 527
Column
Address
Address
Page(Row)
Address
Address
t
WB
t
AR2
t
R
t
RC
t
RHZ
t
RR
t
CHZ
t
CEH
t
RB
t
CRY
t
WC
»
»
»
Figure 9: KM29U64000T Read Timing
(Courtesy Samsung Semiconductor)