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參數(shù)資料
| 型號： | DSM2180F390K6 |
| 廠商： | 意法半導體 |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (5V Supply) |
| 中文描述： | 帝斯曼（數(shù)字信號處理器系統(tǒng)內存）模擬器件公司的ADSP - 218X系列（5V電源） |
| 文件頁數(shù)： | 30/63頁 |
| 文件大?。?/td> | 809K |
| 代理商： | DSM2180F390K6 |
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DSM2180F3
30/63
Each Macrocell may only borrow product terms
from certain other Macrocells. Product terms al-
ready in use by one Macrocell are not available for
another Macrocell. Product term allocation does
not add any propagation delay to the logic.
If an equation requires more product terms than
are available to it through product term allocation,
then “external” product terms are required, which
consumes other Output Macrocells (OMC). This is
called product term expansion and also happens
automatically in PSDsoft Express
TM
as needed.
Product tern expansion causes additional propa-
gation delay because an OMC is consumed by the
expansion and it’s output is rerouted (or fed back)
into the AND array.
You can examine the fitter report generated by
PSDsoft Express to see resulting product term al-
location and product term expansion.
Loading and Reading the Output Macrocells
(OMCs).
Each of the two OMC blocks (8 OMCs
each) occupies a memory location in the DSP ad-
dress space, as defined in the
csiop
block
MCELLAB0-7 and MCELLBC0-7 (see Table 4).
The flip-flops in each of the 16 OMCs can be load-
ed from the data bus by a DSP. Loading the OMCs
with data from the DSP takes priority over internal
functions. As such, the preset, clear, and clock in-
puts to the flip-flop can be overridden by the DSP.
The ability to load the flip-flops and read them
back is useful in such applications as loadable
counters and shift registers, mailboxes, and hand-
shaking protocols.
Data is loaded into the Output Macrocells (OMC)
on the trailing edge of Write Strobe (WR, CNTL0).
Figure 17. CPLD Output Macrocell
PT
Allocator
MASK
REG.
PT CLK
PT
PT
PT
CLKIN
Feedback (.FB)
Port Input
A
P
MUX
MUX
POLARITY
SELECT
LD
IN
CLR
Q
PR
DIN
COMB/REG
SELECT
Port
Driver
Input
Macrocell
I/O Pin
Macrocell
Allocator
INTERNAL DATA BUS
D[7:0]
Direction
Register
CLEAR (.RE)
Programmable
FF (D/T/JK/SR)
WR
ENABLE (.OE)
PRESET(.PR)
RD
Output Macrocell CS
AI04903B
相關PDF資料 |
PDF描述 |
|---|---|
| DSM2180F390T6 | DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (5V Supply) |
| DSM2180F3V15K6 | DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (5V Supply) |
| DSM2180F3V15T6 | DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (5V Supply) |
| DSM2180F3V90K6 | DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (5V Supply) |
| DSM2180F3V90T6 | DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (5V Supply) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DSM2180F3-90K6 | 功能描述:SPLD - 簡單可編程邏輯器件 5.0V 8M 90ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風格:Through Hole 封裝 / 箱體:DIP-24 |
| DSM2180F390T6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (3.3V Supply) |
| DSM2180F3-90T6 | 功能描述:SPLD - 簡單可編程邏輯器件 5.0V 8M 90ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風格:Through Hole 封裝 / 箱體:DIP-24 |
| DSM2180F3V | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DSM (DIGITAL SIGNAL PROCESSOR SYSTEM MEMORY) FOR ANALOG DEVICES ADSP-218X FAMILY (3.3V SUPPLY) |
| DSM2180F3V-15 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (3.3V Supply) |
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