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pu2clr · Jan 8, 2025 · 1476f3b · 1476f3b
1 parent 053aa0e
commit 1476f3b
Showing 1 changed file with 0 additions and 84 deletions.
diff --git a/src/SI4844.cpp b/src/SI4844.cpp
@@ -170,90 +170,6 @@ void SI4844::waitInterrupt(void)
 /** @defgroup GB1  Receiver Functions */
 
 
-/* 
-
-Steps to control the device with  "ATDD device detects the band" mode configuration  
-
-5.1.1. Power-On Sequence   
-
-Step 1: Reset and Prepare the Device   
-    1.  The system controller resets the ATDD device and releases the  RSTb  pin.  
-    2.  The system controller waits until the first  IRQ  is received, indicating that the ATDD device is ready to receive commands.  
-
-Step 2: Obtain Device Status   
-    3. The system controller sends the  ATDD_GET_STATUS  command to retrieve the ATDD device status.  
-    -  The system controller must check the  BCFG0  bit in the response to determine if the ATDD device or the system controller is responsible for band detection and selection.  
-    -  If  BCFG0 = 0 , the ATDD device detects the band.   
-    -  Note: The  HOSTPWRUP  bit is always set at this stage, prompting the system controller to issue the  ATDD_POWER_UP  command.  
-    -  Band and tune information are  not available  at this point.  
-
-Step 3: Power Up the Device   
-    4. The system controller issues the  ATDD_POWER_UP  command with the following parameters:  
-    -  Initial Power-Up:   
-    -  Set  ARG1 bit[5:0] BANDIDX = 0  (since the host doesn’t know the band number).  
-    -  Crystal Configuration:   
-    -  Set  ARG1 bit[7] XOSEN = 1  if using a 32.768 kHz crystal.  
-    -  Set  ARG1 bit[6] XOWAIT = 0  for a standard 600 ms crystallization time, or  XOWAIT = 1  for an extended 900 ms.  
-    -  Optional Parameters (for Custom Band Configuration):   
-    -  ARG2, ARG3:  Set if the new lower band frequency differs from the default.  
-    -  ARG4, ARG5:  Set if the new upper band frequency differs from the default.  
-    -  ARG6:  Set if the new channel spacing differs (AM only).  
-    -  ARG7:  Include for new features (Si4827 and Si4844B).  
-
-Step 4: Confirm Band Detection   
-    5. The system controller waits for another  IRQ  indicating that the valid band has been detected.  
-
-Step 5: Retrieve Updated Status   
-    6. The system controller sends the  ATDD_GET_STATUS  command to obtain the latest status:  
-    -  If  REPLY0 bit[4] INFORDY = 1  (band information ready):  
-    -  Save the band index in  REPLY1 bit[5:0] BANDIDX  for future use.  
-    -  Check the following for any required host actions:  
-    -  HOSTRST (REPLY0 bit[7])  – Reset ATDD if switching across different band modes.  
-    -  HOSTPWRUP (REPLY0 bit[6])  – Issue  ATDD_POWER_UP  again if switching within the same band mode.  
-
-    Band Switching Actions:   
-    -  Same Band Mode:   
-    -  Reissue the  ATDD_POWER_UP  command with the known band index.  
-    -  Different Band Mode:   
-    -  Reset the ATDD device, wait for IRQ, and issue  ATDD_POWER_UP  again with the known band index.  
-
-Step 6: Frequency Detection   
-    7. The system controller waits for another  IRQ  indicating that the tune wheel frequency is ready.  
-
-Step 7: Display Updated Status   
-    8. The system controller issues the  ATDD_GET_STATUS  command to display the latest information:  
-    -  If  REPLY0 bit[4] INFORDY = 1  (information ready):  
-    -  Display the band mode, station, and stereo states.  
-    -  The tune frequency is ready when the combination of  REPLY2  and  REPLY3  results in a non-zero 4-digit BCD value.  
-    -  Always save the band index  REPLY1 bit[5:0] BANDIDX  for later use.  
-
-Optional Audio Configuration   
-    9. The system controller can optionally send the  ATDD_AUDIO_MODE  command to select an audio output mode:  
-    -  AUDIO_MODE Bits (Choose One):   
-    -  (0) Digital volume mode  
-    -  (1) Bass/treble mode  
-    -  (2) Bass/treble + volume control (mix mode 1)  
-    -  (3) Bass/treble + volume control (mix mode 2)  
-    -  Additional Settings:   
-        -  ADJPT_ATTN:  Attenuates audio output by 2 dB for adjacent points (100 kHz).  
-        -  ADJPT_STEO:  Enables stereo indicator and separation at adjacent points (100 kHz).  
-        -  FM_MONO:  Forces FM audio output to mono or stereo.  
-
-Optional Property Adjustment   
-    10. The system controller can optionally issue the  SET_PROPERTY  command to adjust:  
-    -   Receive volume  
-    -   Bass/treble level  
-    -   FM de-emphasis  
-    -   Soft-mute  
-    -   Banding properties (overrides default settings).  
-
-    References:
-    Si48XX ATDD PROGRAMMING GUIDE - AN610 (Pages 4, 7)
-
-
-
-*/
-
 /**
  * @ingroup GB1
  * @todo UNDER CONSTRUCTION