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參數(shù)資料
| 型號： | TDA8753A |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | YUV 8-bit analog-to-digital interface |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDIP42 |
| 封裝： | 0.600 INCH, PLASTIC, SOT-270-1, SDIP-42 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 111K |
| 代理商： | TDA8753A |
1996 Jan 12
5
Philips Semiconductors
Product specification
YUV 8-bit analog-to-digital interface
TDA8753A
FUNCTIONAL DESCRIPTION
Analog-to-digital converter
The TDA8753 implements 3 independent CMOS 8-bit
analog-to-digital converters. The converters use a
multi-step approach with offset compensated
comparators.
Clamping
An internal clamping circuit is provided in each of the
3 analog channels. The analog pins INY, INV and INU are
switched to on-chip clamping levels during an active pulse
on the clamp input CLP.The clamping level in the
Y channel is code level 16. The clamping level in the U/V
channel is code level 128 (output code 0 in the
2's complement description) see Tables 3 and 4.
Sample rate converter
A sample rate converter is integrated in the TDA8753A to
facilitate programming of the horizontal aspect ratio which
can be varied from a factor 1 to 2.
This includes conversion from 16/9 to 14/9 and 4/3. In the
U/V channel a linear interpolation is sufficient because of
the four times oversampling.
Discrete time oscillator (DTO)
A discrete time oscillator is used to calculate for every
sample of the phase delay that is needed for a given
compression factor.
Serial interface (SIO)
All controls are sent to the TDA8753A via a serial
microprocessor interface. Data from this interface will be
made active at the vertical input pulse V50.
The TDA8753A has three addressable control registers
which can be loaded via the signals UPDA and UPCL.
The format of this bus is fixed according to mode 0 of the
8051 family UART at 1 Mbaud (8 bits are transmitted, LSB
first).
Serial interface protocol
P
OWER
-
ON STATE
When powered up the SIO is in an unknown state and all
data in the registers is random. When signals are applied
to UPCL and UPDA in this state, the behaviour is
unpredictable. The only way to exit from this state to a
known state is apply a V50 signal to the TDA8753A.
I
NITIALIZATION STATE
From power-on or any other state, the INIT state is entered
(at the latest) one TDA8753A clock period after the end of
the V50 HIGH state. In this state the F0, F1 and F2
TDA8753A registers are loaded with the values that are in
the corresponding line buffers BF0, BF1 and BF2. The first
time V50 is issued after power-on, this data is unknown.
After a rising UPCL edge has been detected, the address
reception state is entered.
A
DDRESS RECEPTION STATE
Bits are counted at each rising UPCL edge. The next 8 bits
received on UPDA line are considered as address bits.
The address reception is illustrated in Fig.3.
Fig.3 Address reception.
handbook, halfpage
1
1
1
1
0
0
1
0
incoming stream
first data bit
of data value
for address F2
register
last address
bit received
first bit
received
(in this example address received is F2 hex)
MBE426
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| TDA8754 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Triple high speed ADC for LCD drive |
| TDA8754H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Triple high speed ADC for LCD drive |
| TDA8754HL/11/C1,51 | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 3X8 BIT VIDEO RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| TDA8754HL/11/C1,55 | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 TRPL 8BIT VIDEO ADC RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| TDA8754HL/11/C1/R1 | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 3X8-BIT VID INTERFACE 110 MSPS RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
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