TJA1101 force sleep

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TJA1101 force sleep

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JUNJIECHANG
Contributor I

 

I'm testing the sleep mode of TJA1101. After I put it to sleep through the forced sleep command, I tried to use the command to put it into standby mode, but it didn't work. How can I get it out of sleep mode?

The device can be switched to Sleep by setting the FORCE_SLEEP=1. Note that this
command would turn the PHY to sleep mode immediately if it is not already in Sleep.

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5 Replies

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bulat
NXP TechSupport
NXP TechSupport

Do you remove power from the chip when entering into sleep mode?

If you read register #17 during sleep, what value it returns?

 

Regards,

Bulat

 

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204 Views
JUNJIECHANG
Contributor I
First of all thanks for your reply!
        I don't remove power form the chip when entering into sleep mode, and the value of the register #17 during sleep readed is 0x5000.
        Now we use TC37x control the TJA1101, and use the INH pin control connect to TLF35584 WAK pin, so when I want to power off the controller, I must first put the PHY into sleep mode. But when I put the PHY into Sleep mode through the Fource Sleep command, the PHY chip cannot be activated by the activity detected signal of the bus. What should I do (the WAKE_IN_OUT pin is not connected to the hardware)?
 
Looking forward to your reply!
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200 Views
bulat
NXP TechSupport
NXP TechSupport

Can you read the value of register #18 before entering into sleep?

 

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172 Views
JUNJIECHANG
Contributor I
 Now we use TC37x control the TJA1101, and use the INH pin control connect to TLF35584 WAK pin, so when I want to power off the controller, I must first put the PHY into sleep mode. But when I put the PHY into Sleep mode through the Fource Sleep command, the PHY chip cannot be activated by the activity detected signal of the bus. What should I do (the WAKE_IN_OUT pin is not connected to the hardware)?
 
Looking forward to your reply!
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176 Views
JUNJIECHANG
Contributor I

I can read the value of register #18 before entering into sleep,it is 0x5E05. 

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