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參數(shù)資料
| 型號(hào)： | LH5496U-20 |
| 廠商： | Sharp Corporation |
| 英文描述： | CMOS 512 X 9 FIFO |
| 中文描述： | 512 × 9的CMOS先進(jìn)先出 |
| 文件頁(yè)數(shù)： | 13/16頁(yè) |
| 文件大?。?/td> | 141K |
| 代理商： | LH5496U-20 |
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OPERATIONAL MODES (cont’d)
Depth Expansion
Depth expansion is implemented by configuring the
required number of FIFOs in Expansion mode. In this
arrangement, the FIFOs are connected in a circular fash-
ion with the Expansion Out pin (XO) of each device tied
to the Expansion In pin (XI) of the next device. One FIFO
in this group must be designated as the first load device.
This is accomplished by tying the First Load pin (FL) of
this device to ground. All other devices must have their
FL pin tied to a high level. In this mode, W and R signals
are shared by all devices, while internal logic controls the
steering of data. Only one FIFO will be enabled for any
given read cycle, so the common Data Out pins of all
devices are wire-ORed together. Likewise, the common
Data In pins of all devices are tied together.
In Expansion mode, external logic is required to gen-
erate a composite Full or Empty flag. This is achieved by
ORing the FF pins of all devices and ORing the EF pins
of all devices respectively. The Half-Full flag and
Retransmit functions are not available in Depth Expan-
sion mode.
5496-19
RS
RS
FF
9
9
RS
W
FF
DATA IN
D
0
- D
8
RS
FF
9
9
9
R
DATA OUT
Q
0
- Q
8
9
FL
FL
EF
XI
XO
FL
EF
Vcc
Vcc
XO
XO
9
9
XI
XI
EMPTY
FULL
EF
LH5496/96H
LH5496/96H
LH5496/96H
Figure 19. FIFO Depth Expansion (1536
×
9)
CMOS 512
×
9 FIFO
LH5496/96H
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LH5496U-15 | CMOS 512 X 9 FIFO |
| LH5496U | CMOS 512 X 9 FIFO |
| LH5496HU-80 | CMOS 512 X 9 FIFO |
| LH5496HU-65 | CMOS 512 X 9 FIFO |
| LH5496HU-50 | CMOS 512 X 9 FIFO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LH5496U-25 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
| LH5496U-35 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
| LH5496U-50 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
| LH5496U-65 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:CMOS 512 X 9 FIFO |
| LH5496U-80 | 制造商:Sharp Microelectronics Corporation 功能描述: 制造商:Sharp Microelectronics Corporation 功能描述:FIFO, 512 x 9, Asynchronous, 32 Pin, Plastic, PLCC |
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