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OPERATIONAL MODES
Single Device Configuration
When depth expansion is not required for the given
application, the device is placed in Single mode by tying
the Expansion In pin (XI) to ground. This pin is internally
sampled during reset.
Width Expansion
Word-width expansion is implemented by placing mul-
tiple LH5496/96H devices in parallel. Each LH5496/96H
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
17 and 18.)
WRITE
DATA IN
D
0
- D
8
9
FULL FLAG
RESET
XI
RT
RETRANSMIT
EMPTY FLAG
9
READ
HF
LH5496/96H
W
FF
RS
R
EF
DATA OUT
Q
0
- Q
8
5496-17
Figure 17. Single FIFO (512
×
9)
DATA IN
18
WRITE
FULL FLAG
RESET
9
READ
EMPTY FLAG
R
EF
XI
RT
R
W
5496-18
RS
RETRANSMIT
RT
XI
HF
W
FF
RS
9
18
DATA OUT
9
HF
9
LH5496/96H
LH5496/96H
Figure 18. FIFO Width Expansion (512
×
18)
LH5496/96H
CMOS 512
×
9 FIFO
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LH5496D-20 | CMOS 512 X 9 FIFO |
| LH5496D-25 | CMOS 512 X 9 FIFO |
| LH5496D-35 | CMOS 512 X 9 FIFO |
| LH5496D-50 | CMOS 512 X 9 FIFO |
| LH5496D-65 | CMOS 512 X 9 FIFO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LH5496D-20 | 制造商:Sharp Microelectronics Corporation 功能描述: |
| LH5496D-25 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
| LH5496D-35 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
| LH5496D-50 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
| LH5496D-65 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
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