ADE3000SX View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ADE3000SX Datasheet PDF : 88 Pages
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ADC Block
ADE3XXX
where fOUT and fXCLK are in MHz.
The maximum output frequency of the fm frequency synthesizer is fXTAL x 2(2+NDIV).
Note that native duty cycle of the fm frequency synthesizer is not 50/50. We recommend to either
enable the divide-by-two in the fm synthesizer block for frequencies up to fXCLK x 2(1+NDIV) (typically
108 MHz) or set the output mux to a double wide output mode for pixel clocks above fXCLK x
2(1+NDIV). This will ensure a 50% duty clock on the output.
Table 5: FM Frequency Synthesizer Registers
Register Name
FM_FS_CTRL
FM_FS_PR_0
FM_FS_PR_1
FM_FS_PR_2
FM_FS_PR_3
FM_FS_AMPLITUDE
FM_FS_PERIODX64
Addr
0x0830
0x0831
0x0832
0x0833
0x0834
0x0835
0x0836
Mode
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bits
[7:4]
[3]
[2]
[1]
[0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
Default
Description
Reserved
0x0
Clear the FM synthesizer
0x0
Clear the FS accumulator
0x0
Activate the frequency modulation
0x0
Divide the output by 2
0x8000000 Phase Rate
0x0
0x80
LSB = 72 ps
LSB = 1.185 µs
2.3 ADC Block
The analog port consists of three 9-bit RGB ADCs with preamp, gain/offset adjustment and digital
filtering. The I2C interface for the ADC block is in the INCLK clock domain which must be active for
programming.
Input voltage, gain and offset register settings are approximately related to the output code. In this
equation, the output code (OUTPUT_CODE_8B) is equal to:
457 x offset / 28 + 181 x gain x input_mV / 216 - 125 x gain x offset / 216 - 219
Table 6: ADC Registers
Register
ADC_DITHER
ADC_OFFSET_R
ADC_OFFSET_G
ADC_OFFSET_B
ADC_GAIN_R
ADC_GAIN_G
ADC_GAIN_B
Addr.
0x0324
Mode
R/W
R/W
R/W
R/W
R/W
0x0326 R/W
0x0328 R/W
0x0329 R/W
0x032A R/W
0x032B R/W
0x032C R/W
Bits
[7]
[6]
[5]
[4]
[3]
[2]
[1:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
Default
Description
Reserved
0x0 Dither Horizontally
0x0 Dither Vertically
0x0 Dither Temporally
0x0 Force Dither High
0x0 Enable Dither
Reserved
0x0 Offset Control, Red Channel
0x0 Offset Control, Green Channel
0x0 Offset Control, Blue Channel
0x0 Gain Control, Red Channel
0x0 Gain Control, Green Channel
0x0 Gain Control, Blue Channel
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