NI 8451-Sensor connection

[R_J]

Hi

In one of our application I have to read the internal register values of the sensors. I am using NI 8451 card.

Pin Details of the sensors are-

1. SDIO – Serial Port Data Input & Output
2. XY_LED – Led Control
3. NRESET – Reset Pin (active low input)
4. NCS – Chip select (active low input)
5. VDD5 – Supply voltage
6. GND – Ground
7. REG0- Regulator Output
8. SCLK – Serial Clock Input

My question is NI 8451 is having separate pins for SDO & SDI But sensor is having one pin for SDIO. How to connect them  ,I have to read the register values & some registers are read/writable.??

Please reply as soon as possible, it is very urgent

Regards

R

[New LV User]

Maybe the SDIO name has confused the issue. On the 5020 SDIO just means Serial Data Input/Output. The communication protocol used on the 5020 is I2C. So you should be using pin 29 and 30 on the 8451 as the proper connections for I2C to read/write the 5020 registers.

Regards,

New LV User

[New LV User]

R,

I am wrong. The 5020 is indeed SPI. I am sorry.

New LV User

[R_J]

Hi

Thanks for reply.

I am using SPI communication not I2C.And i have to interface 6 sensors (slave devices) with the NI USB 8451 device.

Regards

R

[R_J]

SDIO stands for serial data input output.