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AM261...ZNC 数据表(PDF) 149 Page - Texas Instruments |
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AM261...ZNC 数据表(HTML) 149 Page - Texas Instruments |
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149 / 218 page  NO. PARAMETER DESCRIPTION MIN MAX UNIT SM9 td(SPICLK-CS) Delay time, SPI_SCLK last edge to SPI_CS[i] inactive PHA = 0 –4 + A(2) ns PHA = 1 –4 + B(3) ns (1) P = SPICLK period in ns. (2) When P = 20.8ns, A = (TCS + 1) * TSPICLKREF, where TCS is a bit field of the SPI_CH(i)CONF register. When P > 20.8ns, A = (TCS + 0.5) * Fratio * TSPICLKREF, where TCS is a bit field of the SPI_CH(i)CONF register. (3) B = (TCS + .5) * TSPICLKREF, where TCS is a bit field of the SPI_CH(i)CONF register and Fratio = Even >= 2. SPI_CS[i] (OUT) SPI_SCLK (OUT) SPI_SCLK (OUT) SPI_D[x] (OUT) SPI_CS[i] (OUT) SPI_SCLK (OUT) SPI_SCLK (OUT) SPI_D[x] (OUT) Bit n-1 Bit n-2 Bit n-3 Bit n-4 Bit 0 Bit n-1 Bit n-2 Bit n-3 Bit 1 Bit0 PHA=0 EPOL=1 POL=0 POL=1 PHA=1 EPOL=1 POL=0 POL=1 SM8 SM9 SM6 SM3 SM1 SM2 SM1 SM8 SM9 SM3 SM1 SM2 SM1 SM6 SM7 SM6 SM2 SM3 SM2 SM3 SM6 SM6 SM6 SPRSP08_TIMING_McSPI_01 Figure 6-42. SPI Controller Mode Transmit Timing 6.11.5.11.4 SPI Peripheral Mode Timing Requirements NO. PARAMETER DESCRIPTION MIN MAX UNIT SS1 tc(SPICLK) Cycle time, SPI_SCLK 40 ns SS2 tw(SPICLKL) Typical Pulse duration, SPI_SCLK low 0.45 × P(1) ns SS3 tw(SPICLKH) Typical Pulse duration, SPI_SCLK high 0.45 × P(1) ns SS4 tsu(SIMO-SPICLK) Setup time, SPI_D[x] valid before SPI_SCLK active edge 5 ns SS5 th(SPICLK-SIMO) Hold time, SPI_D[x] valid after SPI_SCLK active edge 5 ns www.ti.com AM2612, AM2611, AM2611-Q1, AM2612-Q1 SPRSPA7C – SEPTEMBER 2024 – REVISED JULY 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 149 Product Folder Links: AM2612 AM2611 AM2611-Q1 AM2612-Q1 |
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