ade3700 STMicroelectronics, ade3700 Datasheet - Page 17

• Manufacturer Part Number: ade3700
• Description: Analog Lcd Display Engine For Xga And Sxga Resolutions
• Manufacturer: STMicroelectronics

ADE3700
2.3
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
FM_FS_PULSE_EXT
ADC_DITHER
ADC_OFFSET_R
ADC_OFFSET_G
Register Name
Analog-to-Digital Converter (ADC)
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.
The relationship of input voltage, gain and offset register settings to output code is approximately as
follows:
output_code_8b = 457 x offset / 2
Register
Table 5: FM Frequency Synthesizer Registers
0x0830
0x0831
0x0832
0x0833
0x0834
0x0835
0x0836
0x0837
0x0324
0x0326
0x0328
Addr
Addr.
Table 6: ADC Registers (Sheet 1 of 2)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
8
Mode
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Mode
+ 181 x gain x input_mV / 2
[3]
[2]
[1]
[0]
[6:3]
[2:0]
[7:4]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7]
[6]
[5]
[4]
[3]
[2]
[1:0]
Bits
[7]
[7:0]
[7:0]
Bits
0x0
0x0
0x0
0x0
8000000
0x0
0x0
0x80
0x0
Default
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
Default
Analog-to-Digital Converter (ADC)
Dither horizontally
Dither vertically
Dither temporally
Force dither high
Enable dither
Reserved
Reserved
Clear the FM synthesizer
Clear the fs accumulator
Activate the frequency modulation
Divide the output by 2
Phase Rate
LSB = 72 ps
LSB = 1.185 us
Enable
Reserved
Value
Reserved
Offset Control, Red Channel
Offset Control, Green Channel
16
- 125 x gain x offset / 2
Description
Description
16
- 219
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