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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) 122 Page - Texas Instruments |
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TMS320DM643 датащи(HTML) 122 Page - Texas Instruments |
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122 / 160 page  www.ti.com Bit(n-1) (n-2) (n-3) Bit 0 Bit(n-1) (n-2) (n-3) 14 12 11 10 9 3 3 2 8 7 6 5 4 4 3 3 2 13(A) 13(A) A. Parameter No. 13 applies to the first data bit only when XDATDLY ≠ 0. CLKR FSR (int) FSR (ext) DR CLKX FSX (int) FSX (ext) FSX (XDATDLY=00b) DX TMS320DM643 Video/Imaging Fixed-Point Digital Signal Processor SPRS269A – FEBRUARY 2005 – REVISED APRIL 2005 Figure 5-46. McBSP Timing Table 5-43. Timing Requirements for McBSP as SPI Master or Slave: CLKSTP = 10b, CLKXP = 0 (1) (2) (see Figure 5-47) –500 –600 NO. UNIT MASTER SLAVE MIN MAX MIN MAX 4 tsu(DRV-CKXL) Setup time, DR valid before CLKX low 12 2 – 12P ns 5 th(CKXL-DRV) Hold time, DR valid after CLKX low 4 5 + 24P ns (1) P = 1/CPU clock frequency in ns. For example, when running parts at 600 MHz, use P = 1.67 ns. (2) For all SPI Slave modes, CLKG is programmed as 1/4 of the CPU clock by setting CLKSM = CLKGDV = 1. DM643 Peripheral Information and Electrical Specifications 122 |
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