On TMS570LC43, how to control ECLK2 in gio mode

Martin Beaucage

Hello,

The TMS570LC43 documentation SPNS195A may 2014, page 40 suggests that pin K3 can be configured in GIO mode. I found how to control ECLK1 in GIO mode but not ECLK2.

Could you tell me how I can control ECLK2 in GIO mode?

Thanks,

Martin

over 10 years ago

0 QJ Wang over 10 years ago

TI__Guru**** 197126 points

Hi Martin,

ECLK2 is multiplexed with EMIF_CLK and ECLK2 is not a primary function after reset. You need to select ECLK2 to be brought out to the terminal using IOMM module.

After ECLK2 is brought to pin K3, you can use the same way for ECLK1 to control ECLK2 in GIO mode.

Regards,

0 Martin Beaucage over 10 years ago in reply to QJ Wang

Intellectual 860 points

Hello QJ,

I am ok to put ECLK2 on pin k3 but I don't know how to control ECLK2.

For ECLK1, I can use registers SYSPCx at address 0xFFFFFF00 but which registers are used for ECLK2?

Regards,

Martin

0 Martin Beaucage over 10 years ago in reply to Martin Beaucage

Intellectual 860 points

Hello,

By testing, I found how to control ECLK2. The problem was that the documentation that I have SPNU563 May 2014 doesn't show 2 control bits for system control registers SYSPC1 to SYSPC9. In reality for those registers bit0 is for ECLK1 and bit1 is for ECLK2.

Regards,

Marin

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On TMS570LC43, how to control ECLK2 in gio mode