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Author Topic: TSA5514, AS (pin 10) control pin voltage for Master Address Select  (Read 5553 times)

Harm2k17

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TSA5514, AS (pin 10) control pin voltage for Master Address Select
« on: September 10, 2017, 02:30:23 pm »
It has to do with the "AS" pin (nr. 10), the applied voltage on this pin determines the address selection for the master I2C- bus.
(See Philips datasheet TSA5514, table 4).
It's about the MA0 and MA1 bits (Master Address Select).

Question; what to apply now in such a manner that the commands from the 16F627A controller are accepted by the TSA5514?
I'am really a n00b here... :-((

The applied voltage can vary between 0 (GND) and 1 (VCC, 5V).


(table 4)

MA1  MA0  VOLTAGE APPLIED ON PIN AS
0       0      0 to 0.1 Vcc
0       1      open
1       0      0.4 to 0.6 Vcc
1       1      0.9 Vcc to Vcc

Can you give me a hint?

Kind regards,
Harm
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Jan

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Re: TSA5514, AS (pin 10) control pin voltage for Master Address Select
« Reply #1 on: September 10, 2017, 07:28:22 pm »
Leave the pin "open", i.e. not connected.
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Harm2k17

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Re: TSA5514, AS (pin 10) control pin voltage for Master Address Select
« Reply #2 on: September 11, 2017, 09:41:04 am »
Quote from: Jan on September 10, 2017, 07:28:22 pm
Leave the pin "open", i.e. not connected.

Indeed! Thank you Jan, this is something i can work with. I had this port connected to gnd.
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