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AN4440 Datasheet(PDF) 25 Page - STMicroelectronics

No. de pieza AN4440
Descripción Electrónicos  RFFE HVDAC control
PDF  36 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4440 Datasheet(HTML) 25 Page - STMicroelectronics

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DocID025913 Rev 1
25/36
AN4440
USID modification
36
Test new USID
•
Send a frame with new USID: Send 96d to register 1: New USID = 0001b,
register 1 = 00001b, date = 96d = 01100000b, parity 1 = 0, parity 2 = 1
Figure 35. Send data to DAC B with new USID
DAB value will be updated to 15.6 V
•
Send a frame with old USD: Try to send 56d to register 1: Old USID = 0111b,
register 1 = 00001b, date = 56d = 00011100b, parity 1 = 0, parity 2 = 0
Figure 36. Send data to DAC B with old USID
DAB B value will not be updated.
Test with AUT (automatic mode)
Set SELSID: if the SELSID pin is tied to Vcc: SELSID = 1 or if SELSID is to GND:
SELSID = 0
Set new USID
Click on program
Figure 37. USID modification with AUT (automatic mode)
HVDAC is reprogrammed with new USID.
Now each frame (programming DAC value, for example) is sent with this new USID.



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