McSPI Registers
Table 24-16. McSPI System Register (MCSPI_SYST) Field Descriptions (continued)
Bit
Field
Value
Description
3
SPIEN_3
SPIEN[3] line (signal data value)
If MCSPI_SYST[SPIENDIR] = 0 (output mode direction), the SPIENT[3] line is driven high or low
according to the value written into this register.
If MCSPI_SYST[SPIENDIR] = 1 (input mode direction), this bit returns the value on the SPIEN[3]
line (high or low), and a write into this bit has no effect.
2
SPIEN_2
SPIEN[2] line (signal data value)
If MCSPI_SYST[SPIENDIR] = 0 (output mode direction), the SPIENT[2] line is driven high or low
according to the value written into this register.
If MCSPI_SYST[SPIENDIR] = 1 (input mode direction), this bit returns the value on the SPIEN[2]
line (high or low), and a write into this bit has no effect.
1
SPIEN_1
SPIEN[1] line (signal data value)
If MCSPI_SYST[SPIENDIR] = 0 (output mode direction), the SPIENT[1] line is driven high or low
according to the value written into this register.
If MCSPI_SYST[SPIENDIR] = 1 (input mode direction), this bit returns the value on the SPIEN[1]
line (high or low), and a write into this bit has no effect.
0
SPIEN_0
SPIEN[0] line (signal data value)
If MCSPI_SYST[SPIENDIR] = 0 (output mode direction), the SPIENT[0] line is driven high or low
according to the value written into this register.
If MCSPI_SYST[SPIENDIR] = 1 (input mode direction), this bit returns the value on the SPIEN[0]
line (high or low), and a write into this bit has no effect.
4043
SPRUH73H – October 2011 – Revised April 2013
Multichannel Serial Port Interface (McSPI)
Copyright © 2011–2013, Texas Instruments Incorporated