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TDA2SX: How to Send I2C from TDA2sx

Li Niu
Prodigy 131 points
Part Number: TDA2SX
Other Parts Discussed in Thread: LP87563-Q1

(Sorry if this sounds ridiculously fundamental...)

We have LP87563-Q1 PMIC connected to TDA2SX by I2C buses.

The corresponding pins on TDA2SX are 

MCASP1_AXR0   ------ SDA1
MCASP1_AXR1   ------ SCL1

GPIO6_10   ---- SDA2
GPIO6_11   ---- SCL2
We know exactly what message we'd like to send on to those I2C buses to config the PMIC. How can we use those GPIO pins to transmit the I2C message?
Thanks!
Li