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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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TMS320DM643 데이터시트(PDF) 53 Page - Texas Instruments |
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TMS320DM643 데이터시트(HTML) 53 Page - Texas Instruments |
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53 / 160 page  www.ti.com 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 SPRS269A – FEBRUARY 2005 – REVISED APRIL 2005 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 Device Configurations 53 |
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