Hi, Today our PGA450Q1EVM-S eval arrived as well as several PGA450Q in order to develop our parking and blind-spot detection board. How can we can get our hands on a Tiger board ?
Jan Dekkers
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Hi, Today our PGA450Q1EVM-S eval arrived as well as several PGA450Q in order to develop our parking and blind-spot detection board. How can we can get our hands on a Tiger board ?
Jan Dekkers
Hi Akeem, I didn't read the datasheets in full detail yet hence the question about the TI GER so that we can evaluate this faster. I did buy the EVM-S because of its 1/4 price compared to the EVM, did I make a mistake? I am using a PIC32MX which some pins are 5v tolerant. While I got your attention here some questions:
Are the PGA450Q1 pre-programmed or do the need programming after soldered to the board?
Can the PGA450Q1 be programmed by UART from the PIC32 without modifying the TI code too much?
Is the UART code to interface with them generic so it can be used without too much fiddling on other MCUs?
One of the PGA450Q1 negatives is that SPI is limited and when we need to control a max of 12 Ultrasonic Transducers we most likely need to use LIN to communicate with 12 PGA450Q1's or somehow 1 PGA450Q1 switching to 12 different Ultrasonic Transducers (the latter being cheaper). Any advice you can give me here?
Akeem,
Thanks for the detailed and thoughtful reply. In respect to the SPI programming, I assume the code TI provides for programming can be easily ported over to a PIC32 or other MCU's "I don't have a TI GER board at my disposal", is that a correct statement?
For switching the transducers I'm looking into a MUX solution such as TI's CD74HC4067 which will be controlled by the PIC32. Is the CD74HC4067 a good solution or do you have a better solution?
Hi Akeem, I will be ordering the full scale PGA450Q1EVM (www.ti.com/.../pga450q1evm) so we can better evaluate and make measurements to determine the best MUX to use. I don't have schematics handy at this time but as soon we are putting things on the drawing board I will share them. Any chance you know the acceptable R_DS (On) resistance and min and max voltages requirements to select a MUX?