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ENICSF2811PBKA 数据表(PDF) 124 Page - Texas Instruments |
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ENICSF2811PBKA 数据表(HTML) 124 Page - Texas Instruments |
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124 / 172 page ![]() TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 6-29. SPI Slave Mode External Timing (Clock Phase = 1)(1)(2) NO. MIN MAX UNIT 12 tc(SPC)S Cycle time, SPICLK 8tc(LCO) ns 13(3) tw(SPCH)S Pulse duration, SPICLK high (clock polarity = 0) 0.5tc(SPC)S – 10 0.5tc(SPC)S ns tw(SPCL)S Pulse duration, SPICLK low (clock polarity = 1) 0.5tc(SPC)S – 10 0.5tc(SPC)S 14(3) tw(SPCL)S Pulse duration, SPICLK low (clock polarity = 0) 0.5tc(SPC)S – 10 0.5tc(SPC)S ns tw(SPCH)S Pulse duration, SPICLK high (clock polarity = 1) 0.5tc(SPC)S – 10 0.5tc(SPC)S 17(3) tsu(SOMI-SPCH)S Setup time, SPISOMI before SPICLK high (clock polarity = 0) 0.125tc(SPC)S ns tsu(SOMI-SPCL)S Setup time, SPISOMI before SPICLK low (clock polarity = 1) 0.125tc(SPC)S 18(3) tv(SPCH-SOMI)S Valid time, SPISOMI data valid after SPICLK high 0.75tc(SPC)S ns (clock polarity = 0) tv(SPCL-SOMI)S Valid time, SPISOMI data valid after SPICLK low 0.75tc(SPC)S (clock polarity = 1) 21(3) tsu(SIMO-SPCH)S Setup time, SPISIMO before SPICLK high (clock polarity = 0) 0 ns tsu(SIMO-SPCL)S Setup time, SPISIMO before SPICLK low (clock polarity = 1) 0 22(3) tv(SPCH-SIMO)S Valid time, SPISIMO data valid after SPICLK high 0.5tc(SPC)S ns (clock polarity = 0) tv(SPCL-SIMO)S Valid time, SPISIMO data valid after SPICLK low 0.5tc(SPC)S (clock polarity = 1) (1) The MASTER/SLAVE bit (SPICTL.2) is cleared and the CLOCK PHASE bit (SPICTL.3) is set. (2) tc(SPC) = SPI clock cycle time = LSPCLK/4 or LSPCLK/(SPIBRR + 1) tc(LCO) = LSPCLK cycle time (3) The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6). NOTE: Internal clock prescalers must be adjusted such that the SPI clock speed is limited to the following SPI clock rate: • Master mode transmit: 20 MHz MAX. Master mode receive: 12.5 MHz MAX. • Slave mode transmit: 12.5 MHz MAX. Slave mode receive: 12.5 MHz MAX. 124 Electrical Specifications Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 |
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