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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMS320DM643 датащи(PDF) 106 Page - Texas Instruments |
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TMS320DM643 датащи(HTML) 106 Page - Texas Instruments |
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106 / 160 page  www.ti.com 8 7 4 4 3 2 2 1 A0 A1 B0 B1 A30 A31 B30 B31 C0 C1 C2 C3 C31 AHCLKR/X (Falling Edge Polarity) AHCLKR/X (Rising Edge Polarity) ACLKR/X (Falling Edge Polarity) ACLKR/X (Rising Edge Polarity) AFSR/X (Bit Width, 0 Bit Delay) AFSR/X (Bit Width, 1 Bit Delay) AFSR/X (Bit Width, 2 Bit Delay) AFSR/X (Slot Width, 0 Bit Delay) AFSR/X (Slot Width, 1 Bit Delay) AFSR/X (Slot Width, 2 Bit Delay) AXR[n] (Data In/Receive) 6 5 TMS320DM643 Video/Imaging Fixed-Point Digital Signal Processor SPRS269A – FEBRUARY 2005 – REVISED APRIL 2005 Table 5-33. Switching Characteristics Over Recommended Operating Conditions for McASP (see Figure 5-33 and Figure 5-34) –500 –600 NO. PARAMETER UNIT MIN MAX 9 tc(AHCKRX) Cycle time, AHCLKR/X 20 ns 10 tw(AHCKRX) Pulse duration, AHCLKR/X high or low 10 ns 11 tc(CKRX) Cycle time, ACLKR/X ACLKR/X int 33 ns 12 tw(CKRX) Pulse duration, ACLKR/X high or low ACLKR/X int 16.5 ns ACLKR/X int –1 5 ns 13 td(CKRX-FRX) Delay time, ACLKR/X transmit edge to AFSX/R output valid ACLKR/X ext 0 10 ns ACLKX int –1 5 ns 14 td(CKX-AXRV) Delay time, ACLKX transmit edge to AXR output valid ACLKX ext 0 10 ns ACLKR/X int 0 10 ns Disable time, AXR high impedance following last data bit from 15 tdis(CKRX-AXRHZ) ACLKR/X transmit edge ACLKR/X ext 0 10 ns Figure 5-33. McASP Input Timings 106 DM643 Peripheral Information and Electrical Specifications |
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