Freescale Semiconductor KIT34825EPEVME, Руководство пользователя

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KIT34825EPEVME Evaluation Board , Rev. 2.0
16 Freescale Semiconductor
Software Description
Reset by I2C: to reset the 34825 by pulling both I2C_SCL and I2C_SDA signals to ground. Refer to the
datasheet of 34825 for more information. The status of the registers after reset will show up in the register
map.
5.3.5 Identification result
The identification result is displayed right under the register map. When the 34825 identifies one
accessory, the accessory name is shown in this window.
5.3.6 Device mode
The device mode is displayed next to the identification result. The 34825 has three operation modes,
Standby, Power Save and Active (refer to the datasheet for more details). The operation mode of device
is shown at this location.
5.3.7 Remote control key status
The 34825 supports up to 13 remote control keys (S0 to S12) when an Audio R/C 1 or an Audio R/C 2
accessory is attached to the mini-USB connector of the evaluation board. With an Audio R/C 1 or an
Audio R/C 2 accessory attached, the cell phone window enters the media-player mode, as shown in
Figure 14 . In the media-player mode, the remote control key status will be displayed. When the key is
released before a “short-key” timing length, the corresponding key in the GUI shows green color. When
the key is still pressed when passing the “short-key” timing length, the corresponding key shows red color
until the key is released.
When using the remote control simulator on the evaluation board, the key “S0”, “S1”, “S2”, “S3” and “S4”
are assigned to “Play/Pause”, “Previous”, “Next”, “Volume Up” and “Volume Down” function of the
Windows Media Player. Pressing S0 will start or pause the music. The S1 and S2 switch between the four
songs shown in
Figure 13 . The S3 and S4 adjust the volume of the music and the volume is displayed
the cell phone window of the GUI software.
5.3.8 Record button
When the Audio R/C accessory is attached, the GUI software can record the voice input from the
microphone. Click the red “R” button under the Windows Media Player to start the voice recording. At the
same time, the button name is changed to “P”. Click the red “P” button to stop voice recording and
recorded voice will be played back through the headphone.
5.3.9 Version information
There is an “ about... ” item in the system menu of the software. After running the GUI software, clicking
the right button of the mouse with the cursor pointing at the software icon in the task bar, as shown in
Figure 15 , will pop up the system menu that contains the “about...” selection. Clicking the “ about... ”
selection results in a dialog window showing the version information of the software.