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參數(shù)資料
| 型號(hào)： | lpm-constant |
| 廠商： | Altera Corporation |
| 英文描述： | Parameterized Constant Generator(參數(shù)確定的常量發(fā)生器) |
| 中文描述： | 參數(shù)化常數(shù)發(fā)生器（參數(shù)確定的常量發(fā)生器） |
| 文件頁(yè)數(shù)： | 38/48頁(yè) |
| 文件大?。?/td> | 293K |
| 代理商： | LPM-CONSTANT |
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Altera Corporation
33
Storage Functions
lpm_rom
Parameterized Read-Only Memory
The
lpm_rom
function can be used as either
synchronous or asynchronous read-only
memory.
Ports
Parameters
Name
Type
Required
Description
address[]
Input
Input
Yes
No
Address input to the memory. This port is
LPM_WIDTHAD
wide.
Clock for input registers. The
address[]
port is synchronous (registered) when
the
inclock
port is connected, and is asynchronous (unregistered) when the
inclock
port is not connected.
Clock for output registers. The addressed memory content
q[]
response is
synchronous when the outclock port is connected, and is asynchronous when it
is not connected.
Memory enable input. High = data output on
q[]
, Low = high-impedance
outputs.
Memory output. This port is
LPM_WIDTH
wide.
inclock
outclock
Input
No
memenab
Input
No
q[]
Output
Yes
Name
Required
Value
Description
LPM_ADDRESS_CONTROL
No
"REGISTERED"
"UNREGISTERED"
"<filename>"
Controls whether the
address[]
port is registered. The
default value is
"REGISTERED"
.
Name of the MIF or Hex File containing ROM initialization
data ("<filename>").
In general, this value should be (but is not required to be)
2
LPM_WIDTHAD
–1
<
LPM_NUMWORDS
≤
2
LPM_WIDTHAD
. The
default value is 2
LPM_WIDTHAD
.
Controls whether the
q[]
port is registered. The default
value is
"REGISTERED"
.
Width of the
q[]
port.
Width of the
address[]
port.
LPM_WIDTHAD
should be
(but is not required to be) equal to log
2
(
LPM_NUMWORDS
). If
LPM_WIDTHAD
is too small, some memory locations will
not be addressable. If it is too large, the addresses that are
too high will return undefined logic levels.
LPM_FILE
Yes
LPM_NUMWORDS
No
Integer > 0
LPM_OUTDATA
No
"REGISTERED"
"UNREGISTERED"
Integer > 0
Integer > 0
LPM_WIDTH
Yes
Yes
LPM_WIDTHAD
LPM_ROM
address[]
inclock
outclock
memenab
LPM_ADDRESS_CONTROL=
LPM_FILE=
LPM_NUMWORDS=
LPM_OUTDATA="UNREGISTERED"
LPM_WIDTH=
LPM_WIDTHAD=
q[]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| lpm-decode | Parameterized Decoder(參數(shù)確定的解碼器) |
| lpm-counter | Parameteruzed Absolute Value(參數(shù)確定的計(jì)數(shù)器) |
| lpm-compare | Parameteruzed Comparator(參數(shù)確定的比較器) |
| lpm-latch | Parameteruzed Latch(參數(shù)確定的鎖存器) |
| lpm-bustri | Parameterized Tri-State Buffer(參數(shù)確定的三態(tài)緩沖器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LPMM-S2 | 制造商:Panduit Corp 功能描述: 制造商: 功能描述: 制造商:undefined 功能描述: |
| LPMM-S2-C | 功能描述:電纜束帶 LOW PROFILE MOUNT RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Cable Tie Mounts 類型:Adhesive 顏色:Black 材料:Acrylonitrile Butadiene Styrene (ABS) 長(zhǎng)度:19 mm 寬度:19 mm 抗拉強(qiáng)度: |
| LPMM-S2-M | 功能描述:電纜束帶 Cable Tie Mount, Low Profile, #2 Screw RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Cable Tie Mounts 類型:Adhesive 顏色:Black 材料:Acrylonitrile Butadiene Styrene (ABS) 長(zhǎng)度:19 mm 寬度:19 mm 抗拉強(qiáng)度: |
| LPMM-S5 | 制造商:MISCELLANEOUS 功能描述: |
| LPMM-S5-C | 功能描述:電纜束帶 LOW PROFILE MOUNT RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Cable Tie Mounts 類型:Adhesive 顏色:Black 材料:Acrylonitrile Butadiene Styrene (ABS) 長(zhǎng)度:19 mm 寬度:19 mm 抗拉強(qiáng)度: |
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