PCM5142: Pure Path Studio

user4578229

Part Number: PCM5142
Other Parts Discussed in Thread: PCM3070

Hello, I am using PCM5142 recently. My requirement is that minidsp generates an interrupt signal and outputs it from the GPIO pin, or I can get the generated interrupt by reading the register.

I used it on PCM3070 well before, but PCM5142 doesn't have the same register allows me to configure which GPIO pin the interrupt output.

this is the pcm5142 pfw file

and this is the register of pcm3070 ，page 0 register 0x34

emm,,,,,am i clear enough？

over 3 years ago

0 Paul_Frost over 3 years ago

TI__Guru 52663 points

Hi,

My understanding is that you can configure the GPIO pin to respond to these commands inputs. The G1SL function should allow this:

Thanks,

Paul

0 user4578229 over 3 years ago in reply to Paul_Frost

Prodigy 60 points

there is no gpio1,so i use gpio5, P0/R84 = 0x01,but it seems does not work, it always output low level.

the properties of the gpio_output_1 is :

0 Paul_Frost over 3 years ago in reply to user4578229

TI__Guru 52663 points

Hi,

Also note that you must configure the GPIO to be an output as well:

Page 0 / Register 8 - set GPIOx to be output

Thanks,

Paul

0 user4578229 over 3 years ago in reply to Paul_Frost

Prodigy 60 points

Yes, I do it according to the register description in the datasheet

I2C1_WriteSingleByte(devaddr, 0x00, 0x00);
I2C1_WriteSingleByte(devaddr, 0x08, 0x3f);
I2C1_WriteSingleByte(devaddr, 0x54, 0x01);

if i set the register as below, the output can be high or low,
I2C1_WriteSingleByte(0x98, 0x00, 0x00);

I2C1_WriteSingleByte(0x98, 0x54, 0x02);

I2C1_WriteSingleByte(0x98, 0x56, 0x3f);

I2C1_WriteSingleByte(0x98, 0x56, 0x00);

in the PPS, the output pin has a property named “InterruptNumber”,can be set 1 or 2, which one should i shoose

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PCM5142: Pure Path Studio