Texas Instruments DEM-DAI3010 manual CN057 VCC supply selection for the PCM3010

Setting Functions

CN057: VCC supply selection for the PCM3010

This jumper determines whether VCC for the PCM3010 is supplied from a 3.3-V regulator on this board (U051), or via an external power supply terminal (CN056).

In the initial setting, VCC is supplied from the onboard regulator. When VCC for the PCM3010 is to be provided by an external power supply, the jumper is removed from CN057 and 3.3 V is supplied to CN056. If 3.3 V is supplied externally, 5 V must still be provided to CN054 in order to supply the analog section of the PCM3010.

To avoid latch-up of the PCM3010, ensure that VCC and VDD are switched on simultaneously at start-up.

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