F1978 Datasheet

© 2017 Integrated Device Technology, Inc.

22

Rev O August 28, 2017

Serial Logic Control Setup

The Evaluation Board has the ability to control the F1978 in the Serial Mode. Connect the serial controller to the J11 header connection as

shown in Figure 25. To use the Serial Mode, set U2 switch 7 to the “+” or “O” position.

The attenuation setting can be programmed according to Table 8.

Figure 25. Serial Logic Connections

Power-On Procedure

Set up the voltage supplies and Evaluation Board as described in the “Power Supply Setup” section and either the “Parallel Logic Control Setup”

or “Serial Logic Control Setup” sections above.

Enable the VDD supply.

Enable the proper attenuation setting according to Figure 21 and Table 8 for Serial Mode or Table 12 for the Parallel Mode.

Power-Off Procedure

Set the logic control pins to a logic LOW.

Disable the VDD supply.