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TDA4VM: GPIO

Part Number: TDA4VM

Hi,TI.I have a problem abuout gpio1_32,this pin is set MLB0_MLBDP ,but now I want to change the mode from MLB0 to GPIO.I find that when I set this pin to GPIO mode,but I can't change the voltage of pin no matter what I set this pin to high or low.So I want to ask a question ,how can I change this pin voltage .Is there something wrong about my  operation.

 devmem2 0x0011c29c 0x10007 (set the pin to gpio_mode)

 devmem2 0x00601038  0xFFFFFFFE (set the pin to output mode,GPIO1_32)

 devmem2 0x0060103C 0x00000000(set the pin to low voltage)

When I finish the s operation,I find the register value of 0x0011c29c change from 0x10007 to 0x00007 .In additon, I also find that this pin voltage is always 1.8 V no matter what I set 0x0060103c 0x0000000 or 0x00000001.

Please answer my question quickly ? Thask you very much!

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