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參數(shù)資料
| 型號： | LH540203U15 |
| 廠商： | Sharp Corporation |
| 英文描述： | CMOS 2048X9 ASYNCHRONOUS FIFO |
| 中文描述： | 異步FIFO的CMOS 2048X9 |
| 文件頁數(shù)： | 5/17頁 |
| 文件大?。?/td> | 161K |
| 代理商： | LH540203U15 |
OPERATIONAL MODES
Standalone Configuration
When depth cascading is not required for a given
application, the LH540203 is placed in standalone mode
by tying the Expansion In input (XI) to ground. This
input is internally sampled during a reset operation. (See
Table 1.)
Width Expansion
Word-width expansion is implemented by placing mul-
tiple LH540203 devices in parallel. Each LH540203
should be configured for standalone mode. In this ar-
rangement, the behavior of the status flags is identical for
all devices; so, in principle, a representative value for
each of these flags could be derived from any one device.
In practice, it is better to derive ‘composite’ flag values
using external logic, since there may be minor speed
variations between different actual devices. (See Figures
4, 5, and 6.)
WRITE
DATA IN
D
0
- D
8
9
FULL FLAG
RESET
XI
RT
RETRANSMIT
EMPTY FLAG
9
READ
HF
LH540203
W
FF
RS
R
EF
DATA OUT
Q
0
- Q
8
540203-17
Figure 4. Standalone FIFO (2048
×
9)
18
WRITE
FULL FLAG
RESET
9
READ
EMPTY FLAG
R
EF
XI
RT
R
W
540203-18
RS
RETRANSMIT
RT
XI
HF
W
FF
RS
9
18
9
HF
9
LH540203
DATA IN
D
0
- D
17
DATA OUT
Q
0
- Q
17
Figure 5. FIFO Word-Width Expansion (2048
×
18)
CMOS 2048
×
9 Asynchronous FIFO
LH540203
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LH540203 | CMOS 2048 x 9 Asynchronous FIFO |
| LH540204 | CMOS 4096 x 9 Asynchronous FIFO |
| LH540205 | CMOS 8192 x 9 Asynchronous FIFO |
| LH540215 | 512 x 18 / 1024 x 18 Synchronous FIFO |
| LH540235 | 2048 x 18 / 4096 x 18 Synchronous FIFOs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LH540203U-15 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 2048X9 ASYNCHRONOUS FIFO |
| LH540203U20 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 2048X9 ASYNCHRONOUS FIFO |
| LH540203U-20 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x9 Asynchronous FIFO |
| LH540203U25 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 2048X9 ASYNCHRONOUS FIFO |
| LH540203U-25 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x9 Asynchronous FIFO |
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