參數(shù)資料
型號(hào)： ADV7172KST
廠商： ANALOG DEVICES INC
元件分類(lèi)： 顏色信號(hào)轉(zhuǎn)換
英文描述： Digital PAL/NTSC Video Encoder with Six DACs 10 Bits, Color Control and Enhanced Power Management
中文描述： COLOR SIGNAL ENCODER, PQFP48
封裝： PLASTIC, TQFP-48
文件頁(yè)數(shù)： 39/59頁(yè)
文件大?。?/td> 455K
代理商： ADV7172KST
ADV7172/ADV7173
–39–
REV. A
CC17
CC16
CC15
CC14
CC13
CC12
CC11
CC10
CC15–CC10
U SCALAR VALUE
CC17 CC16
ZERO SHOULD
BE WRITTEN
TO THESE BITS
CC27
CC26
CC25
CC24
CC23
CC22
CC21
CC20
CC25–CC20
V SCALAR VALUE
CC27 CC26
ZERO SHOULD
BE WRITTEN
TO THESE BITS
Figure 64. Color Control Registers
HCR7
HCR6
HCR5
HCR4
HCR3
HCR2
HCR1
HCR0
HCR7–HCR0
HUE ADJUST VALUE
Figure 65. Hue Control Register
COLOR CONTROL REGISTERS 2–1 (CC2–CC1)
(Address (SR4–SR0) = 1EH–1FH)
The color control registers are 8-bit-wide registers used to scale
the U and V output levels. Figure 64 shows the operations un-
der control of these registers.
CC1 BIT DESCRIPTION
Reserved (CC17–CC16)
A Logic “0” must be written to these bits.
U Scalar Value (CC15–CC10)
These six bits represent the value required to scale the U level
from 0.75 to 1.25 of its initial level. The value of these six bits is
calculated using the following equation:
Color Control Register
1 = (
X
– 0.75)
×
128
where
X
= Scaling factor for U
e.g., Scale U by 0.8
Color Control Register
1 = (0.8 – 0.75)
×
128 = 6.4 = 000110
(rounded to the nearest integer)
CC2 BIT DESCRIPTION
Reserved (CC27–CC26)
A Logic “0” must be written to these bits.
V Scalar Value (CC25–CC20)
These six bits represent the value required to scale the V pixel
data from 0.75 to 1.25 of its initial level. The value of these six
bits is calculated using the following equation:
Color Control Register
2 = (
X
– 0.75)
×
128
where
X
= Scaling factor for V
e.g., Scale V by 1.2
Color Control Register
2 = (1.2 – 0.75)
×
128 = 57.6 = 111001
(rounded to the nearest integer)
HUE CONTROL REGISTERS (HCR)
(Address (SR5–SR0) = 20H)
The hue control register is an 8-bit-wide register used to adjust
the hue on the composite and chroma outputs. Figure 65 shows
the operation under control of this register.
HCR BIT DESCRIPTION
Hue Control Value (HCR7–HCR0)
These eight bits represent the value required to vary the hue of
the video data, i.e., the variance in phase of the subcarrier with
respect to the phase of the subcarrier during the color burst.
The ADV7172/ADV7173 provides a range of
±
22
°
in incre-
ments of 0.17578125
°
. For normal operation (zero adjustment)
this register is set to 80 Hex. FFHex and 00Hex represent the
upper and lower limit (respectively) of adjustment attainable.
Hue Adjust
= (0.17568125
×
[
HCR
7 –
HCR
0 – 128]).
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADV7172KST-REEL 制造商:Analog Devices 功能描述:
ADV7172KSTZ 制造商:Analog Devices 功能描述:
ADV7172KSTZ-REEL 功能描述:IC DAC VIDEO NTSC 6-CH 48-LQFP RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類(lèi)型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799
ADV7173 制造商:AD 制造商全稱:Analog Devices 功能描述:Digital PAL/NTSC Video Encoder with Six DACs 10 Bits, Color Control and Enhanced Power Management
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