參數(shù)資料
型號: LH540235
廠商: Sharp Corporation
英文描述: 2048 x 18 / 4096 x 18 Synchronous FIFOs
中文描述: 2048 ×四千零九十六分之十八× 18同步FIFO的
文件頁數(shù): 32/46頁
文件大?。?/td> 369K
代理商: LH540235
540235-25
Q
0
- Q
17
REN
RCLK
HF
OE
WEN
D
0
- D
17
WCLK
DATA WRITE
DATA WRITE
DATA READ
LOW
DATA IN
OUTPUT REGISTER
NEXT
DATA READ
t
SKEW11
t
DS
t
DS
t
SKEW11
t
HFS
t
HFS
t
HFS
t
ENS
t
ENH
t
ENS
t
ENH
t
A
t
A
NOTES:
1. t
is the minimum time between a rising RCLK edge and a
rising WCLK edge for HF to change predictably during the current
clock cycle. If the time between the rising edge of RCLK and the
rising edge of WCLK is less than t
, then it is not guaranteed
that HF will change state until the next following WCLK edge.
2. The internal state of the FIFO:
At , exactly half full.
At B
At C
Enhanced Operating Mode Timing Diagram
NO WRITE
NO WRITE
A
B
C
Figure 19. Half-Full-Flag Timing, When Synchronized
to Input Port (Enhanced Operating Mode)
TIMING DIAGRAMS (cont’d)
LH540235/45
2048 x 18/4096 x 18 Synchronous FIFOs
32
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