參數(shù)資料
型號(hào)： BU1425AK
廠商： Rohm CO.,LTD.
英文描述： NTSC / PAL digital RGB encoder
中文描述： 的NTSC / PAL編碼器，數(shù)字RGB
文件頁(yè)數(shù)： 31/32頁(yè)
文件大?。?/td> 307K
代理商： BU1425AK
31
Multimedia ICs
BU1425AK / BU1425AKV
(5) Adjustment of the DAC output level
The voltage level of the DAC output is determined by the
DAC internal output current and the DAC output external
resistor. The output current per 1 DAC bit is determined
by the external resistor of the IR pin (pin 42), as shown
below.
I (1LSB) = VVREF/RIR
1 / 16 [A] ... (equation 6-1)
VVREF ... Voltage generated by the regulator circuit in
the BU1425AK
RIR ... External resistor for the IR pin
[V]
1200[
]
Consequently, when VVREF = 1.3V and RIR = 1200
,
a current of 67.71
μ
A per 1LSB is output. Because the
white level of Y is a digital value of 396 (decimal value),
the following results:
V (Y white) = 0.0677
×
396 = 26.81mA
At this point, if the DAC output external resistance is
37.5
, an amplitude of 1.005V
P-P
is obtained.
(6) YUV input mode
With the BU1425AK, setting the IM0 pin (pin 23) to
HIGH enables a 16-bit YUV input format to be support-
ed. At that time, the timing of U and V can be reversed
when data is input, using the H / L state of the Test2
pin.
The input conditions for this mode are shown below.
0
Internal clock (BCLK)
HSY
Y-Data
U.V-Data
1
2
2n
Y5
Y4
Y3
Y2
Y1
U5
V3
U3
V1
U1
2n + 1
Fig. 25 YUV input timing when TEST[2] = L
Internal clock (BCLK)
HSY
Y-Data
U.V-Data
0
1
2
2n
Y5
Y4
Y3
Y2
Y1
U5
V3
U3
V1
U1
2n + 1
Fig. 26 YUV input timing when TEST[2] = H
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
BU1425AKV 功能描述:IC ENCODER NTSC/PAL DGTL VQFP64 RoHS:是 類別: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
BU1427K 制造商:未知廠家 制造商全稱:未知廠家 功能描述:マルチメディアLSI
BU1427KV 制造商:未知廠家 制造商全稱:未知廠家 功能描述:マルチメディアLSI
BU-1449-E-12-0 功能描述:測(cè)試引線 Black Mini-Micro-Plg RoHS:否 制造商:Pomona Electronics 設(shè)備類型:Patch Cords 連接器類型:Banana plug (stackable) on both ends 長(zhǎng)度:60 in 顏色:Black
BU-1449-E-12-2 功能描述:測(cè)試引線 Red Mini-Micro-Plgr RoHS:否 制造商:Pomona Electronics 設(shè)備類型:Patch Cords 連接器類型:Banana plug (stackable) on both ends 長(zhǎng)度:60 in 顏色:Black
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