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TSB81BA3E: connection problem with TSB81BA3E and TSB12LV01B.

Minqiu Xie
Mastermind 21565 points
Part Number: TSB81BA3E
Other Parts Discussed in Thread: TSB12LV01B,

Hi team:

My customer had problems with the TSB81BA3E and TSB12LV01B.

Using transformer coupling, the TSB81BA3E is configured in 1394A-only mode for the following two tests:

1). 2 channels LKON/DS2 through pull-up resistor to 3.3V, BMODE is grounded, PINT output (terminal 1) is not connected, LCLK_PMC input (terminal 7) is pulled up to 3.3V through pull-up resistor;

But finally they cannot be connected

2). 2 channels DS0 are grounded, BMODE is grounded, PINT output (terminal 1) is not connected, LCLK_PMC input (terminal 7) is grounded;

They are normally connected, but cannot be connected to 200M, 100M 1394 devices. View TSB81BA3E register This port is identified as beta mode.

Thanks for your help!