SPRUII0F May 2019 – June 2024 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
The SPI module on this device has a high-speed mode that enables 40 Mbps communication. To achieve the highest possible speed, a special GPIO configuration is used on a single GPIO mux option for each SPI. These GPIOs can also be used by the SPI when not in high-speed mode (HS_MODE = 0). Table 15-7 shows which GPIOs have the special mux option to allow SPI high-speed mode.
To select these mux options, configure the GPyGMUX and GPyMUX registers as shown in Table 15-7.
GPIO | SPI Signal | Mux Configuration | |
---|---|---|---|
GPIO58 | SPISIMOA | GPBGMUX2[21:20]=11 | GPBMUX2[21:20]=11 |
GPIO59 | SPISOMIA | GPBGMUX2[23:22]=11 | GPBMUX2[23:22]=11 |
GPIO60 | SPICLKA | GPBGMUX2[25:24]=11 | GPBMUX2[25:24]=11 |
GPIO61 | SPISTEA | GPBGMUX2[27:26]=11 | GPBMUX2[27:26]=11 |
GPIO63 | SPISIMOB | GPBGMUX2[31:30]=11 | GPBMUX2[31:30]=11 |
GPIO64 | SPISOMIB | GPCGMUX1[1:0]=11 | GPCMUX1[1:0]=11 |
GPIO65 | SPICLKB | GPCGMUX1[3:2]=11 | GPCMUX1[3:2]=11 |
GPIO66 | SPISTEB | GPCGMUX1[5:4]=11 | GPCMUX1[5:4]=11 |
GPIO69 | SPISIMOC | GPCGMUX1[11:10]=11 | GPCMUX1[11:10]=11 |
GPIO70 | SPISOMIC | GPCGMUX1[13:12]=11 | GPCMUX1[13:12]=11 |
GPIO71 | SPICLKC | GPCGMUX1[15:14]=11 | GPCMUX1[15:14]=11 |
GPIO72 | SPISTEC | GPCGMUX1[17:16]=11 | GPCMUX1[17:16]=11 |
GPIO91 | SPISIMOD | GPCGMUX2[23:22]=11 | GPCMUX2[23:22]=11 |
GPIO92 | SPISOMID | GPCGMUX2[25:24]=11 | GPCMUX2[25:24]=11 |
GPIO93 | SPICLKD | GPCGMUX2[27:26]=11 | GPCMUX2[27:26]=11 |
GPIO94 | SPISTED | GPCGMUX2[29:28]=11 | GPCMUX2[29:28]=11 |