Linux/WL1837MOD: WL1837 Time Sync GPIO11

Philipp Blumberg

Part Number: WL1837MOD
Other Parts Discussed in Thread: TXS0108E

Tool/software: Linux

Hello Support Team,

we are currently implementing the time synchronization from WL1837MOD (GPIO11) to our i.MX6UL.

In between we Need a Level translator from 1.8V to 3.3V. Can you tell me the frequency requirements for this time sync line? Our Level translator Supports 110 Mbps (Push Pull) and 1.2 Mbps (Open Drain). Is this enough? Could you please clarify the electrical behaviour of this time sync line for me? Tank you very much in advance

Best regards

Philipp

over 5 years ago

0 S over 5 years ago

TI__Mastermind 35795 points

Philipp,
Pls consult this document regarding wl18xxmod level shifting IOs: www.ti.com/.../swra448a.pdf . time sync IO doesn't have any additional requirements.
What level translator are you currently using for other IOs / bus - wlan_en , SDIO lines etc. ?

Saurabh

0 Philipp Blumberg over 5 years ago in reply to S

Intellectual 310 points

Hello Saurabh,

thank you for your quick reply. The iMX6UL directly interfaces the 1.8V SDIO lines. The other lines are translated with a TXS0108E. So Level shifting the time sync line with the TXS0108E is appropriate?

Best regards, Philipp

0 Rizwan Murji over 5 years ago in reply to Philipp Blumberg

TI__Genius 12260 points

Hi Philipp,

Yes this would be our recommended level shifter.

Thanks,
Riz

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Linux/WL1837MOD: WL1837 Time Sync GPIO11