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参数资料
| 型号： | TMX320LF2404APAGS |
| 厂商： | Texas Instruments, Inc. |
| 元件分类： | 数字信号处理 |
| 英文描述： | DSP CONTROLLERS |
| 中文描述： | DSP控制器 |
| 文件页数： | 72/134页 |
| 文件大小： | 1759K |
| 代理商： | TMX320LF2404APAGS |
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TMS320LF2407A,TMS320LF2406A,TMS320LF2403A,TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145K JULY 2000 REVISED AUGUST 2005
42
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
internal memory
The TMS320x240xA devices are configured with the following memory modules:
D Dual-access random-access memory (DARAM)
D Single-access random-access memory (SARAM)
D Flash
D ROM
D 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
16-bit
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.
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 VCCP 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.
相关PDF资料 |
PDF描述 |
|---|---|
| TMX320LF2404APGA | DSP CONTROLLERS |
| TMX320LF2404APGEA | DSP CONTROLLERS |
| TMX320LF2404APGES | DSP CONTROLLERS |
| TN-476RD-2 | 9300 MHz - 9700 MHz RF/MICROWAVE SGL POLE FOUR THROW SWITCH, 1.9 dB INSERTION LOSS |
| TN-473R-1 | 9000 MHz - 9200 MHz RF/MICROWAVE SGL POLE FOUR THROW SWITCH, 1.8 dB INSERTION LOSS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TMX320LF2404APGA | 制造商:TI 制造商全称:Texas Instruments 功能描述:DSP CONTROLLERS |
| TMX320LF2404APGEA | 制造商:TI 制造商全称:Texas Instruments 功能描述:DSP CONTROLLERS |
| TMX320LF2404APGES | 制造商:TI 制造商全称:Texas Instruments 功能描述:DSP CONTROLLERS |
| TMX320LF2404APGS | 制造商:TI 制造商全称:Texas Instruments 功能描述:DSP CONTROLLERS |
| TMX320LF2404APZA | 制造商:TI 制造商全称:Texas Instruments 功能描述:DSP CONTROLLERS |
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