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參數(shù)資料
| 型號(hào)： | TMX320VC5421 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | DIGITAL SIGNAL PROCESSOR |
| 中文描述： | 數(shù)字信號(hào)處理器 |
| 文件頁數(shù)： | 49/88頁 |
| 文件大?。?/td> | 1156K |
| 代理商： | TMX320VC5421 |
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TMS320VC5421
DIGITAL SIGNAL PROCESSOR
SPRS098 – DECEMBER 1999
49
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
IDLE3 power-down mode
The IDLE1 and IDLE2 power-down modes operate as described in the TMS320C54x DSP Reference Set,
Volume 1: CPU and Peripherals(literature number SPRU131). The IDLE3 mode is special in that the clocking
circuitry is shut off to conserve power. The ’5421 cannot enter an IDLE3 mode unless both subsystems execute
an IDLE3 instruction. The power-reduced benefits of IDLE3 cannot be realized until both subsystems enter the
IDLE3 state and the internal clocks are automatically shut off. The order in which subsystems enter IDLE3 does
not matter.
emulating the ’5421 device
The ’5421 is a single device, but actually consists of two independent subboundary systems that contain
register/status information used by the emulator tools. The emulator tools must be informed of the multicore
device by modifying the
board.cfg
file. The board.cfg file is an ASCII file that can be modified with most editors.
This provides the emulator with a description of the JTAG chain. The board.cfg file must identify two processors
when using the ’5421. The file contents would look something like this:
“CPU_B” TI320C5xx
“CPU_A” TI320C5xx
Use the compose program to make this file into a binary file (
board.dat
), readable by the emulation tools. Place
the board.dat file in the directory that contains the emulator software.
The subsystems are serially connected together internally. Emulation information is serially transmitted into the
device using TDI. The device responds with serial scan information transmitted out the TDO pin.
A
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