ADV
ANCEINFORMA
TION
TMS320F28377S, TMS320F28376S, TMS320F28375S, TMS320F28374S
SPRS881A – AUGUST 2014 – REVISED JUNE 2015
4.4.5
High-Speed SPI Pin Muxing
The SPI module on this device has a high-speed mode. To achieve the highest possible speed, a special
GPIO configuration is used on a single GPIO mux option for each SPI. These GPIOs may also be used by
the SPI when not in high-speed mode (HS_MODE = 0).
To select the mux options that enable the SPI high-speed mode, configure the GPyGMUX and GPyMUX
registers as shown in
Table 4-7. GPIO Configuration for High-Speed SPI
GPIO
SPI SIGNAL
MUX CONFIGURATION
SPIA
GPIO58
SPISIMOA
GPBGMUX2[21:20]=11b
GPBMUX2[21:20]=11b
GPIO59
SPISOMIA
GPBGMUX2[23:22]=11b
GPBMUX2[23:22]=11b
GPIO60
SPICLKA
GPBGMUX2[25:24]=11b
GPBMUX2[25:24]=11b
GPIO61
SPISTEA
GPBGMUX2[27:26]=11b
GPBMUX2[27:26]=11b
SPIB
GPIO63
SPISIMOB
GPBGMUX2[31:30]=11b
GPBMUX2[31:30]=11b
GPIO64
SPISOMIB
GPCGMUX1[1:0]=11b
GPCMUX1[1:0]=11b
GPIO65
SPICLKB
GPCGMUX1[3:2]=11b
GPCMUX1[3:2]=11b
GPIO66
SPISTEB
GPCGMUX1[5:4]=11b
GPCMUX1[5:4]=11b
SPIC
GPIO69
SPISIMOC
GPCGMUX1[11:10]=11b
GPCMUX1[11:10]=11b
GPIO70
SPISOMIC
GPCGMUX1[13:12]=11b
GPCMUX1[13:12]=11b
GPIO71
SPICLKC
GPCGMUX1[15:14]=11b
GPCMUX1[15:14]=11b
GPIO72
SPISTEC
GPCGMUX1[17:16]=11b
GPCMUX1[17:16]=11b
Copyright © 2014–2015, Texas Instruments Incorporated
Terminal Configuration and Functions
49
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