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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMS320VC5441APGF датащи(PDF) 21 Page - Texas Instruments |
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TMS320VC5441APGF датащи(HTML) 21 Page - Texas Instruments |
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21 / 86 page  Introduction 12 December 1999 – Revised April 2002 SPRS122E Table 2–3. Signal Descriptions (Continued) NAME DESCRIPTION TYPE† EMULATION/TEST PINS (CONTINUED) EMU1/OFF I/O/Z Emulator interrupt 1 pin. When TRST is driven high, EMU1/OFF is used as an interrupt to or from the emulator system and is defined as I/O. When TRST transitions from high to low, then EMU1 operates as OFF. EMU/OFF = 0 puts all output drivers into the high-impedance state. Note that OFF is used exclusively for testing and emulation purposes (and not for multiprocessing applications). Therefore, for the OFF condition, the following conditions apply: TRST = 0, EMU0 = 1, EMU1 = 0 † I = Input, O = Output, S = Supply, Z = High Impedance ‡ This pin has an internal bus holder controlled by way of the BSCR register in TMS320C54x cLEAD core of DSP subsystem A. § This pin is placed in high-impedance when the EMU1/OFF pin operates as OFF and when EMU1/OFF = 0, this case is exclusively for testing and emulation purposes. ¶ This pin has an internal pullup resistor. # These pins are Schmitt triggered inputs. || This pin is used by Texas Instruments for device testing and should be left unconnected. kThis pin has an internal pulldown resistor. NOTE: Pins highlighted in grey indicate the multiplexed function of the pin. |
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