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| 型號(hào)： | OR2T04A-5S160 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | FPGA |
| 英文描述： | Field-Programmable Gate Arrays |
| 中文描述： | 現(xiàn)場(chǎng)可編程門陣列 |
| 文件頁(yè)數(shù)： | 15/192頁(yè) |
| 文件大?。?/td> | 3148K |
| 代理商： | OR2T04A-5S160 |
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Lucent Technologies Inc.
15
Data Sheet
June 1999
ORCA Series 2 FPGAs
Programmable Logic Cells
(continued)
5-4641(F).r1
Figure 17. SDPM Mode—16 x 2 Synchronous
Dual-Port Memory
The Series 2 devices have added a second synchro-
nous memory mode known as the
synchronous dual-
port memory
(SDPM) mode. This mode writes data
into the memory synchronously in the same manner
described previously for SSPM mode. The SDPM
mode differs in that two separate 16 x 2 memories are
created in each PFU that have the same WE, WPE,
write data (WD[1:0]), and write address (WA[3:0])
inputs, as shown in Figure 17.
The outputs of HLUTA (F[3:2]) operate the same way
they do in SSPM mode—the read address comes
directly from the A[3:0] inputs used to create the
latched write address. The outputs of HLUTB (F[1:0])
operate in a dual-port mode where the write address
comes from the latched version of A[3:0], and the read
address comes directly from RA[3:0], which is input on
B[3:0].
Since external multiplexing of the write address and
read address is not required, extremely fast RAMs can
be created. New system applications that require an
interface between two different asynchronous clocks
can also be implemented using the SDPM mode. An
example of this is accomplished by creating FIFOs
where one clock controls the synchronous write of data
into the FIFO, and the other clock controls the read
address to allow reading of data at any time from the
FIFO.
Latches/Flip-Flops
The four latches/FFs in the PFU can be used in a vari-
ety of configurations. In some cases, the configuration
options apply to all four latches/FFs in the PFU. For
other options, each latch/FF is independently program-
mable.
Table 4 summarizes these latch/FF options. The
latches/FFs can be configured as either positive or
negative level-sensitive latches, or positive or negative
edge-triggered flip-flops. All latches/FFs in a given PFU
share the same clock, and the clock to these latches/
FFs can be inverted. The input into each latch/FF is
from either the corresponding QLUT output (F[3:0]) or
the direct data input (WD[3:0]). For latches/FFs located
in the two outer rings of PLCs, additional inputs are
possible. These additional inputs are fast paths from
I/O pads located in PICs in the same row or column as
the PLCs. If the latch/FF is not located in the two outer
rings of the PLCs, the latch/FF input can also be tied to
logic 0, which is the default. The four latch/FF outputs,
Q[3:0], can be placed on the five PFU outputs, O[4:0].
Table 4. Configuration RAM Controlled Latch/
Flip-Flop Operation
The four latches/FFs in a PFU share the clock (CK),
clock enable (CE), and local set/reset (LSR) inputs.
When CE is disabled, each latch/FF retains its previous
value when clocked. Both the clock enable and LSR
inputs can be inverted to be active-low.
WE
WPE
A4
D Q
D Q
CIN, C0
WA[3:0]
WD[1:0]
WR
WA[3:0]
RA[3:0]
WD[1:0]
HLUTA
F3
F2
D Q
D Q
WR
WA[3:0]
RA[3:0]
WD[1:0]
HLUTB
F1
F0
WRITE PULSE
GENERATOR
A[3:0]
WD[1:0]
RA[3:0] B[3:0]
S
S
Function
Options
Functionality Common to All Latch/FFs in PFU
LSR Operation
Asynchronous or synchronous
Clock Polarity
Noninverted or inverted
Front-End Select
Direct (WD[3:0]) or from LUT
(F[3:0])
LSR Priority
Either LSR or CE has priority
Functionality Set Individually in Each Latch/FF in PFU
Latch/FF Mode
Latch or flip-flop
Set/Reset Mode
Set or Reset
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OR2T04A-5S160I | Field-Programmable Gate Arrays |
| OR2T04A-5S208I | Field-Programmable Gate Arrays |
| OR2T04A-5S84 | Field-Programmable Gate Arrays |
| OR2T04A-5S84I | Field-Programmable Gate Arrays |
| OR2T04A-5T208 | Field-Programmable Gate Arrays |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OR2T04A-5S160I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
| OR2T04A-5S208 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
| OR2T04A5S208-DB | 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門陣列 400 LUT 152 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| OR2T04A-5S208I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
| OR2T04A-5S84 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
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