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TMS320DM640 Datasheet(PDF) 77 Page - Texas Instruments |
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TMS320DM640 Datasheet(HTML) 77 Page - Texas Instruments |
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77 / 171 page  Device Configurations 77 June 2003 − Revised August 2004 SPRS222C 2.6 Debugging Considerations It is recommended that external connections be provided to device configuration pins, including TOUT1/LENDIAN, AEA[22:19] and TOUT0/MAC_EN. Although internal pullup/pulldown resistors exist on these pins, providing external connectivity adds convenience to the user in debugging and flexibility in switching operating modes. Internal pullup/pulldown resistors also exist on the non-configuration pins on the AEA bus (AEA[18:0]). Do not oppose the internal pullup/pulldown resistors on these non-configuration pins with external pullup/pulldown resistors. If an external controller provides signals to these non-configuration pins, these signals must be driven to the default state of the pins at reset, or not be driven at all. For the internal pullup/pulldown resistors for all device pins, see the terminal functions table. 2.7 Configuration Examples Figure 2−6 through Figure 2−9 illustrate examples of peripheral selections that are configurable on the DM641 and DM640 devices. |
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