TMS570LS0714: LS0714 PIN3 function

Huihuang Chen

Hi Champs,

Customer used PIN3 (MIBSPI3NCS[3]/I2CSCL/N2HET1[29]/nTZ1) as TZ function by configure the PINMUX . customer also want to read this pin status, could you advise how to read this pin status? need to change the PINMUX or not?

over 7 years ago

0 Sunil Oak over 7 years ago

TI__Mastermind 49120 points

The input status can be read from any of the other module connections. For example, you can read the input status of N2HET1[29] from the HETDIN register in N2HET1 module.

0 Huihuang Chen over 7 years ago in reply to Sunil Oak

TI__Expert 4060 points

Hi Sunil,

For example read the input status of N2HET1[29], need to change the PINMUX from TZ to N2HET1[29] or not ?

0 Sunil Oak over 7 years ago in reply to Huihuang Chen

TI__Mastermind 49120 points

Hi,

No, you can leave the multiplexing configuration to select the nTZ1 function. Then read the pin status from the HETDIN register for pin 29.

0 Huihuang Chen over 7 years ago in reply to Sunil Oak

TI__Expert 4060 points

Hi Sunil,

If i want to read HETDIN register, need to enable the N2HET1 module first or not?

0 Sunil Oak over 7 years ago in reply to Huihuang Chen

TI__Mastermind 49120 points

You need to enable clock to the N2HET1 module. This is normally already done in the systemInit() function. You don't need any other configuration in N2HET1 to read the input pin status register.

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TMS570LS0714: LS0714 PIN3 function