AN4118 datasheet(4/13 Pages) STMICROELECTRONICS

4 / 13 page

Configuration

AN4118

4/13

Doc ID 023226 Rev 2

Configuration

2.1

Power supply

APWLink is directly powered by a USB cable (Type B). No external power supply is needed.

Note that this power supply is NOT for the power bridge supply on the Sound Terminal®

demonstration board. Please refer to the application note of each specific Sound Terminal®

demonstration board.

2.2

3.3 V digital power output to Sound Terminal® demonstration

board

Jumper J12 is used for the selection of the external Sound Terminal® demonstration board

digital power supply. When J12 is closed, 3.3 VDC is provided to the external Sound

Terminal® demonstration board, and if the external Sound Terminal® demonstration board

has its own 3.3 V digital power supply, J12 has to be left open to avoid any current loop.

2.3

Connection to Sound Terminal® demonstration board

APWLink is simply connected to the Sound Terminal® demonstration board through J10, an

on-board 16-pin female 8x2 2.54 mm connector as shown below.

Figure 4.

Connection to Sound Terminal® demonstration board

AN4118 Datasheet(PDF) 4 Page - STMicroelectronics