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TMS320DM643 bảng dữ liệu(PDF) 53 Page - Texas Instruments

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tên linh kiện TMS320DM643
Giải thích chi tiết về linh kiện  Video/Imaging Fixed-Point Digital Signal Processor
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TMS320DM643 bảng dữ liệu(HTML) 53 Page - Texas Instruments

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3.3 Peripheral Configuration Lock
Unlock the PERCFG Register
Using the PCFGLOCK Register
Write to
PERCFG Register
to Enable/Disable Peripherals
Read from
PERCFG Register
Wait 128 CPU Cycles Before
Accessing Enabled Peripherals
TMS320DM643
Video/Imaging Fixed-Point Digital Signal Processor
SPRS269C – FEBRUARY 2005 – REVISED JANUARY 2007
By default, the McASP0, VP1, VP2, and I2C peripherals are disabled on power up. In order to use these
peripherals on the DM643 device, the peripheral must first be enabled in the Peripheral Configuration
register (PERCFG). Software muxed pins should not be programmed to switch functionalities
during run-time. Care should also be taken to ensure that no accesses are being performed before
disabling the peripherals. To help minimize power consumption in the DM643 device, unused
peripherals may be disabled.
Figure 3-3 shows the flow needed to enable (or disable) a given peripheral on the DM643 device.
Figure 3-3. Peripheral Enable/Disable Flow Diagram
Submit Documentation Feedback
Device Configurations
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