- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376997 > DSM2180F3V90T6 (意法半導(dǎo)體) DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (5V Supply) PDF資料下載
參數(shù)資料
| 型號： | DSM2180F3V90T6 |
| 廠商： | 意法半導(dǎo)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(nèi)存）模擬器件公司的ADSP - 218X系列（5V電源） |
| 文件頁數(shù)： | 18/63頁 |
| 文件大?。?/td> | 809K |
| 代理商： | DSM2180F3V90T6 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當(dāng)前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁
DSM2180F3
18/63
DETAILED OPERATION
Figure 5 shows major functional areas of the de-
vice:
I
Flash Memory
I
PLDs (DPLD, CPLD, Page Register)
I
DSP Bus Interface (Address, Data, Control)
I
I/O Ports
I
Runtime Control Registers
I
JTAG ISP Interface
The following describes these functions in more
detail.
Flash Memory
The Flash memory array is divided evenly into
eight equal 16K byte sectors. Each sector is se-
lected by the DPLD can be separately protected
from program and erase cycles. This configuration
is specified by using PSDsoft Express
TM
.
Memory Sector Select Signals.
The DPLD gen-
erates the Select signals for all the internal memo-
ry blocks (see Figure 14). Each of the eight sectors
of the Flash memory has a Select signal (FS0-
FS7) which contains up to three product terms.
Having three product terms for each Select signal
allows a given sector to be mapped into multiple
areas of system memory.
Ready/Busy (PC3).
This signal can be used to
output the Ready/
Busy
status of the device. The
output on Ready/
Busy
(PC3) is a 0 (Busy) when
Flash memory is being written, or
when Flash
memory is being erased. The output is a 1 (Ready)
when no Write or Erase cycle is in progress. This
signal may be polled by the DSP or used as a DSP
interrupt to indicate when an erase or program cy-
cle is complete.
Memory Operation.
The Flash memory is ac-
cessed through the DSP Address, Data, and Con-
trol Bus Interface. The DSP can access Flash
memory as BDMA mode or as External Data
Memory Overlay. But from the DSM perspective, it
sees either type of access as a series of byte op-
erations (reads and writes). If the DSP accesses
the DSM in BDMA mode, then the DSP BDMA
channel must be initialized and run for each byte
(or block of bytes) read from Flash memory or it
must initialize the DMA channel for each byte writ-
ten to Flash memory. Alternatively, if the DSP ac-
cesses the DSM in External Data Memory Overlay
mode, then the DSP must only ensure the PSD
Page Register and the DSP DMOVLAY register
contains the correct value, then it performs a nor-
mal data read or data write operation without the
burden of initializing the BDMA channel for each
operation (upper byte of 16-bit word is ignored).
DSPs and MCUs cannot write to Flash memory as
it would an SRAM device. Flash memory must first
be “unlocked” with a special sequence of byte
write operations to invoke an internal algorithm,
then a single data byte is written to the Flash mem-
ory array, then programming status is checked by
a byte read operation or by checking the Ready/
Busy pin (PC3). Table 5 lists all of the special in-
struction sequences to program (write) data to the
Flash memory array, erase the array, and check
for different types of status from the array. These
instruction sequences are different combinations
of individual byte write and byte read operations.
Once the Flash memory array is programmed
(written) and then it is in “Read Array” mode, the
DSP will read from Flash memory just as if would
from any 8-bit ROM or SRAM device.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DSM2190F4 | 16-bit fixed point DSP with Flash |
| DSM2190F4V | 16-bit fixed point DSP with Flash |
| DSM2190F4V-15K6 | 16-bit fixed point DSP with Flash |
| DSM2190F4V-15T6 | 16-bit fixed point DSP with Flash |
| DSM3MA | GENERAL-USE RECTIFIER DIODE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DSM2180F3V-90T6 | 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 (5 V supply) |
| DSM2190F4 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-2191 DSPs (3.3V Supply) |
| DSM2190F4V | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-2191 DSPs (3.3V Supply) |
| DSM2190F4V-15K6 | 功能描述:SPLD - 簡單可編程邏輯器件 3.3V 16M 150ns 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(fēng)格:Through Hole 封裝 / 箱體:DIP-24 |
| DSM2190F4V-15T6 | 功能描述:SPLD - 簡單可編程邏輯器件 3.3V 16M 150ns 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(fēng)格:Through Hole 封裝 / 箱體:DIP-24 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。