DLP2010NIR: GPIO_17,GPIO_18 for DLPC150

Hiroyasu Tazawa1

Part Number: DLP2010NIR
Other Parts Discussed in Thread: DLPC150

Hi,

Let me talk about DLP2010NIR NanoScan.

I saw this schematic.
So GPIO_17,GPIO_18 of DLPC150 is connected to TM4C129x.

Please let me know this purpose.
I see source code of TM4C129x.
But It does not control these lines.
It means it is only high when initialization.

Best Regards
Hiroyasu

over 5 years ago

0 Philippe Dollo over 5 years ago

TI__Mastermind 28005 points

Hiroyasu,

As mentioned in the DLPC150 datasheet, these pinouts are only used for general purpose I/O capability for the customer to use. In particular, these pins may be independently toggled to drive high or low, and function separately from basic DLP operation.

GPIO_18 also has an alternate function Keypad support feature, although this is a legacy feature with limited support (see page 7):
www.ti.com/.../dlpc150.pdf

I hope this helps.

Best Regards,
Philippe Dollo

0 Hiroyasu Tazawa1 over 5 years ago in reply to Philippe Dollo

Guru 12350 points

Dear Philpppe

Thank you for your reply.
I got it.

Best Regards
Hiroyasu

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DLP2010NIR: GPIO_17,GPIO_18 for DLPC150