ADV7183AKST Analog Devices Inc, ADV7183AKST Datasheet - Page 25

• Manufacturer Part Number: ADV7183AKST
• Description: IC VIDEO DECODER NTSC 80-LQFP
• Manufacturer: Analog Devices Inc
• Type: Video Decoderr

Specifications of ADV7183AKST

• Applications: Projectors, Recorders, Security
• Voltage - Supply, Analog: 3.15 V ~ 3.45 V
• Voltage - Supply, Digital: 1.65 V ~ 2 V
• Mounting Type: Surface Mount
• Package / Case: 80-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

COLOR CONTROLS
The following registers provide user control over the picture
appearance, including control of the active data in the event of
video being lost. They are independent of any other controls.
For instance, brightness control is independent from picture
clamping, although both controls affect the signal’s dc level.
CON[7:0] Contrast Adjust, Address 0x08 [7:0]
This register allows the user to adjust the contrast of the picture.
Table 44. CON Function
CON[7:0]
0x80 (default)
0x00
0xFF
SAT[7:0] Saturation Adjust, Address 0x09 [7:0]
The user can adjust the saturation of the color output using this
register.
ADI encourages users not to use the SAT[7:0] register, which
may be removed in future revisions of the ADV7183A. Instead,
the SD_SAT_Cb and SD_SAT_Cr registers should be used.
Table 45. SAT Function
SAT[7:0]
0x80 (default)
0x00
0xFF
SD_SAT_Cb[7:0] SD Saturation Cb Channel,
Address 0xE3 [7:0]
This register allows the user to control the gain of the Cb
channel only.
For this register to be active, SAT[7:0] must be programmed
with its default value of 0x80. If SAT[7:0] is programmed with a
different value, SD_SAT_Cb[7:0] and SD_SAT_Cr[7:0] are
inactive.
Table 46. SD_SAT_Cb Function
SD_SAT_Cb[7:0]
0x80 (default)
0x00
0xFF
Description (Adjust Contrast of the Picture)
Gain on luma channel = 1.
Gain on luma channel = 0.
Gain on luma channel = 2.
Description (Adjust Saturation of the Picture)
Chroma gain = 0 dB.
Chroma gain = –42 dB.
Chroma gain = +6 dB.
Description
(Adjust Saturation of the Picture)
Gain on Cb channel = 0 dB.
Gain on Cb channel = –42 dB.
Gain on Cb channel = +6 dB.
Rev. B | Page 25 of 104
SD_SAT_Cr[7:0] SD Saturation Cr Channel,
Address 0xE4 [7:0]
This register allows the user to control the gain of the Cr
channel only.
For this register to be active, SAT[7:0] must be programmed
with its default value of 0x80. If SAT[7:0] is programmed with a
different value, SD_SAT_Cb[7:0] and SD_SAT_Cr[7:0] are
inactive.
Table 47. SD_SAT_Cr Function
SD_SAT_Cr[7:0]
0x80 (default)
0x00
0xFF
SD_OFF_Cb[7:0] SD Offset Cb Channel, Address 0xE1 [7:0]
This register allows the user to select an offset for the Cb
channel only. There is a functional overlap with the Hue [7:0]
register.
Table 48. SD_OFF_Cb Function
SD_OFF_Cb[7:0]
0x80 (default)
0x00
0xFF
SD_OFF_Cr [7:0] SD Offset Cr Chan, Address 0xE2 [7:0]
This register allows the user to select an offset for the Cr
channel only. There is a functional overlap with the Hue [7:0]
register.
Table 49. SD_OFF_Cr Function
SD_OFF_Cr[7:0]
0x80 (default)
0x00
0xFF
Description
(Adjust Saturation of the Picture)
Gain on Cr channel = 0 dB.
Gain on Cr channel = –42 dB.
Gain on Cr channel = +6 dB.
Description
(Adjust Hue of the Picture by Selecting an
Offset for Data on Cr Channel)
0 offset applied to the Cb channel.
–312 mV offset applied to the Cr channel.
+312 mV offset applied to the Cr channel.
Description
(Adjust Hue of the Picture by Selecting an
Offset for Data on the Cb Channel)
0 offset applied to the Cb channel.
–312 mV offset applied to the Cb channel.
+312 mV offset applied to the Cb channel.
ADV7183A