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TMS320LC2401AVFS датащи(PDF) 56 Page - Texas Instruments |
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TMS320LC2401AVFS датащи(HTML) 56 Page - Texas Instruments |
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56 / 134 page ![]() TMS320LF2407A,TMS320LF2406A,TMS320LF2403A,TMS320LF2402A TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A DSP CONTROLLERS SPRS145K − JULY 2000 − REVISED AUGUST 2005 56 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 serial peripheral interface (SPI) module (continued) Figure 15 is a block diagram of the SPI in slave mode. S S Clock Polarity Talk Internal Clock 4 5 6 0 1 2 SPI Bit Rate State Control SPIRXBUF Buffer Register 16 Clock Phase 1 2 30 Receiver Overrun Flag SPICTL.4 Overrun INT ENA SPICCR.3 −0 SPIBRR.6 −0 SPICCR.6 SPICTL.3 SPIRXBUF.15 −0 SPIDAT.15 −0 SPICTL.1 M S M Master/Slave SPI INT FLAG SPICTL.0 SPI INT ENA SPISTS.7 SPIDAT Data Register SPISTS.6 M S SPICTL.2 SPI Char External Connections SPISIMO SPISOMI SPISTE† SPICLK SW2 S M M S SW3 To CPU M SW1 SPIPRI.6 SPI Priority Level 1 INT 1 0 Level 5 INT SPITXBUF.15 −0 3 16 SPITXBUF Buffer Register NOTE A: The diagram is shown in the slave mode. † The SPISTE pin is driven low externally. Note that SW1, SW2, and SW3 are closed in this configuration. See the following errata for restrictions on using the SPISTE pin: TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A DSP Controllers Silicon Errata (literature number SPRZ002) TMS320LC2406A, TMS320LC2404A, TMS320LC2402A DSP Controllers Silicon Errata (literature number SPRZ185) Figure 15. Four-Pin Serial Peripheral Interface Module Block Diagram |
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