TUSB2036: Can you review my schmatic

Driscoll Tsai

Expert 1590 points

Part Number: TUSB2036

Hi Sir,

Could you help check my schematic?

only need two port (pull PIN-23 to High)
don't need current protection (pull PIN-10, 14, 18 to High)
use BUS voltage (pull PIN-8 to LOW)
don't need external EEPROM (pull PIN-26 to HIGH)
How to connect with PIN-6 (should floating??)
how about DM0/1/2, DP0/1/2 (should add 15K ohm or another capacitor?)

Regards,

Driscoll

over 5 years ago

0 JMMN over 5 years ago

TI__Guru 60865 points

Hi Driscoll,

Please see the reference schematics here: www.ti.com/.../technicaldocuments

You have ports 1 and 2 configured as internal ports, is that correct?
There should be 15K pulldowns on port 1 and port 2.
Unused port 3 DP and DM signals should be pulled low

Regards,
JMMN

0 Driscoll Tsai over 5 years ago in reply to JMMN

Expert 1590 points

Hi JMMN,

thanks for your reply.
BTW, how about connect with PIN-6 (should floating??)?
thanks~

Regards,
Driscoll

0 JMMN over 5 years ago in reply to Driscoll Tsai

TI__Guru 60865 points

Hi Driscoll,

Since the application does not use external memory, pin 6 sets the GANGED function. Since the port power controls and overcurrent inputs are not used in the schematic, the setting of GANGED does not actually impact the hub performance.

Regards,

JMMN

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TUSB2036: Can you review my schmatic