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WM8235 Datasheet(PDF) 59 Page - Cirrus Logic |
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WM8235 Datasheet(HTML) 59 Page - Cirrus Logic |
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59 / 154 page  WM8235 Rev 4.6 59 Figure 45 BLC Configuration Notes: 1. This must be set when BLC is used. 2. With this register set, frame sequence will be started after TGSYNC is recognized. Therefore this should be set within the last line of previous frame. PGA CONFIGURATION The WM8235 provides an Automatic Gain Control (AGC) function. The output code is calibrated to target level by this automatic gain control function. See “Automatic Gain Control (AGC)” section for details of AGC sequence. Also, see the following instruction to configure AGC related registers. The analogue PGA (APGA) and digital PGA (DPGA) can be configured manually when AGC is not required. See “Offset Adjust and Programmable Gain” section for details of PGA configuration. PGA configuration APGA configuration AGC configuration 0x2D~0x35 AGAININ* Using AGC function Yes No DPGA configuration 0x36~0x47 DGAININ* Manual PGA configuration Figure 46 PGA Configuration |
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