- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385001 > TMS320LFC2407A (Texas Instruments, Inc.) DSP CONTROLLERS PDF資料下載
參數(shù)資料
| 型號： | TMS320LFC2407A |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DSP CONTROLLERS |
| 中文描述： | DSP控制器 |
| 文件頁數(shù)： | 42/133頁 |
| 文件大?。?/td> | 1672K |
| 代理商： | TMS320LFC2407A |
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頁當(dāng)前第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頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁
SPRS145J JULY 2000 REVISED NOVEMBER 2004
42
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
internal memory
The TMS320x240xA devices are configured with the following memory modules:
Dual-access random-access memory (DARAM)
Single-access random-access memory (SARAM)
Flash
ROM
Boot ROM
dual-access RAM (DARAM)
There are 544 words
×
16 bits of DARAM on the 240xA devices. The 240xA DARAM allows writes to and reads
from the RAM in the same cycle. The DARAM is configured in three blocks: block 0 (B0), block 1 (B1), and
block 2 (B2). Block 1 contains 256 words and Block 2 contains 32 words, and both blocks are located only in
data memory space. Block 0 contains 256 words, and can be configured to reside in either data or program
memory space. The SETC CNF (configure B0 as program memory) and CLRC CNF (configure B0 as data
memory) instructions allow dynamic configuration of the memory maps through software.
When using on-chip RAM, the 240xA runs at full speed with no wait states. The ability of the DARAM to allow
two accesses to be performed in one cycle, coupled with the parallel nature of the 240xA architecture, enables
the device to perform three concurrent memory accesses in any given machine cycle. Externally, the READY
line or on-chip software wait-state generator can be used to interface the 2407A to slower, less expensive
external memory.
single-access RAM (SARAM)
There are 2K words
×
16 bits of SARAM on some of the 240xA devices.
The PON and DON bits select SARAM
(2K) mapping in program space, data space, or both. See Table 19 for details on the SCSR2 register and the
PON and DON bits. At reset, these bits are 11, and the on-chip SARAM is mapped in both the program and data
spaces. The SARAM (starting at 8000h in program memory) is accessible in external memory space (for 2407A
only), if the on-chip SARAM is not enabled.
flash EEPROM
Flash EEPROM provides an attractive alternative to masked program ROM. Like ROM, Flash is nonvolatile.
However, it has the advantage of “in-target” reprogrammability. The LF2407A incorporates one 32K
Flash EEPROM module in program space. The Flash module has multiple sectors that can be individually
protected while erasing or programming. The sector size is non-uniform and partitioned as 4K/12K/12K/4K
sectors.
16-bit
Unlike most discrete Flash memory, the LF240xA Flash does not require a dedicated state machine, because
the algorithms for programming and erasing the Flash are executed by the DSP core. This enables several
advantages, including: reduced chip size and sophisticated, adaptive algorithms. For production programming,
the IEEE Standard 1149.1
(JTAG) scan port provides easy access to the on-chip RAM for downloading the
algorithms and Flash code. This Flash requires 5 V for programming (at V
CCP
pin only) the array. The Flash runs
at zero wait state while the device is powered at 3.3 V.
ROM
The LC240xA devices contain mask-programmable ROM located in program memory space. Customers can
arrange to have this ROM programmed with contents unique to any particular application. See Table 1 for the
ROM memory capacity of each LC240xA device.
See Table 1 for device-specific features.
IEEE Standard 1149.11990, IEEE Standard Test Access Port.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TMS320LF2404A | DSP CONTROLLERS |
| TMS32C5402PGER10G4 | FIXED-POINT DIGITAL SIGNAL PROCESSOR |
| TMS34020 | GRAPHICS PROCESSORS |
| TMS3450NL | LED DUPLEX DIGITAL RADIO CLOCK |
| TMS3471CFS | 780- 】 488-pixel ccd image sensor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMS320M640AGNZ4 | 制造商:Texas Instruments 功能描述:TMS320DM640 548PIN FCBGA PG2.0 - Trays |
| TMS320M641AGDK5 | 制造商:Texas Instruments 功能描述:TMS320DM641AGDK PG2 548 PIN FCBGA 500MHZ - Trays |
| TMS320M641AGDK6 | 制造商:Texas Instruments 功能描述:TMS320DM641AGDK PG2 548 PIN FCBGA - Trays |
| TMS320M641AGNZ5 | 制造商:Texas Instruments 功能描述:TMS320DM641A 548PIN FCBGA PG2.0 500MHZ - Trays |
| TMS320M641AGNZ6 | 制造商:Texas Instruments 功能描述:TMS320DM641A 548PIN FCBGA PG2.0 600 MHZ - Trays |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。