CP2103 datasheet(16/45 Pages) SILABS

16 / 45 page

AN721

Rev. 1.2

4.4.8. Set CP2114 Boot Config

After specifying the configuration number in the text box to the right of the button and clicking the button, the boot

configuration index is programmed into the one-time programmable memory space.

Note: The CP2114 boot configuration index can be changed up to 32 times.

4.4.9. Get DAC Registers

Displays one or more DAC registers in the output window. To display a contiguous range of DAC registers enter the

starting register address in the Start Address field and the number of registers to read in the Num Registers field.

Click Get DAC Registers and the register values will be displayed in the status window as hex comma-separated

values.

4.4.10. Save Final Device Customization to File

Save the final 5.5 kB of customized data into a file for one-time programming in production.

4.5. Using the CP2114 DAC Application

Use the following steps to program the CP2114 using the DAC configuration utility:

1. Click Get CP2114 Capabilities and note the boot index, available OTP boot index slots, and available OTP

config space.

2. Click Load Config Text from File if there is one available; otherwise write the config text into the Config

Text window directly.

3. Click Write Config Text to RAM. This will cause CP2114 to re-enumerate over USB. Once CP2114 device

is seen by the Host again, verify the device's audio functionalities including volume control and mute

control. Adjust the value in Config Text if necessary and repeat Write Config Text to RAM until desired

result is achieved.

4. Verify the DAC registers have the desired setting by entering the Start Address and Num Registers and

clicking Get DAC Registers.

5. Click Save Config Text to File to save a copy of the text in the Config Text window.

6. Click Write Config Text to OTP after all functionalities have been completely verified in RAM. The new

config will consume one Boot Config index slot and some one-time programmable config space. The index

of this new config should be the next available index. For example, if Get CP2114 Capabilities returned

AvailableOtpConfigs of 0x1D, this Configuration index will be 3.

7. Enter the index of the new config and click Read CP2114 Config from OTP. Verify the data returned is as

expected.

8. Click Get CP2114 Capabilities and verify the available OTP config space is (2+Config Data bytes) less

than the previous value. The firmware inserts 2-byte length before the Config Data when writing to OTP.

Available OTP Configs should be 1 less than the previous value.

9. Enter the Configuration index of the new Config and click Set CP2114 Boot Config to make CP2114 to

boot from the new Config.

10. Reset the CP2114.

11. Verify CP2114 boots up properly with DAC functioning properly. Verify volume and mute integration with

the Host. Click Save Final Device Configuration to File for OTP programming in production.

CP2103 Datasheet(PDF) 16 Page - Silicon Laboratories