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AN4440 Datasheet(PDF) 20 Page - STMicroelectronics

Part # AN4440
Description  RFFE HVDAC control
PDF  36 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4440 Datasheet(HTML) 20 Page - STMicroelectronics

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RFFE extended mode
AN4440
20/36
DocID025913 Rev 1
The frame is ended by the bus park.
Figure 23. End of extended mode data
Example 4
Update in extended mode DAC A = 15.6 V, DAC B = 13.2 V, DAC C = 22.8 V
USID = 0111b
Extended mode = 000b
Byte Count: 3 registers to update (A, B, C - registers 2, 1, 0) => Byte Count = 2d =
00010b
Parity 1 = 1 (4 bits equal to 1)
Start register = 0
Parity 2 = 1 (0 bits equal to 1)
Figure 24. Extended mode - example
Register 0 value: 22.8 V => 01111000b
Parity bit for register 0 = 1 (4 bits equal to 1)
Figure 25. First extended mode data



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