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參數(shù)資料
| 型號(hào)： | SAA7115 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | PAL/NTSC/SECAM Video Decoder with Adaptive PAL/NTSC Comb Filter, High Performance Scaler, I2C Sliced Data Readback and SQ PIXEL OUTPUT |
| 中文描述： | PAL / NTSC制式/ SECAM視頻解碼器，自適應(yīng)PAL / NTSC制式梳狀濾波器，高性能潔牙機(jī)，刨切的I2C數(shù)據(jù)回讀和SQ像素輸出 |
| 文件頁(yè)數(shù)： | 68/214頁(yè) |
| 文件大?。?/td> | 732K |
| 代理商： | SAA7115 |
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Pemnr
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Filename:
SAA7115_Datasheet.fm
Confidential - NDA required
page 68
Last edited by H. Lambers
Philips Semiconductors
CS-PD Hamburg
CVIP2
Datasheet
SAA7115
Date:
10/23/01
Version:
0.67
If there is less data in a line than expected for the appropriate data type, this is marked as an error inside the header.
If there is more data in a line, this does not lead to an error, and the additional data bytes are neglected.
8.4.3
S
LICED
VBI D
ATA
O
UTPUT AT THE
I-P
ORT
The following sections are describing the sliced VBI payload data output at the I-Port. Chapter 8.5 describes the output
modes for VBI data at the I-Port.
8.4.3.1
Euro WST US WST and NABTS Data
Euro WST, US WST and NABTS Data are stored in transmission order; first received bit becomes LSB of byte in payload.
8.4.3.2
WSS 625 Data
Each payload byte contains are a group of 6 bits (LSB aligned) representing a single symbol (a WSS625 bit) bi-phase
coded and then oversampled at 3 times the baud rate. To decode the individual bits, it is usual to take a majority decision
on each group of 3 bits (majority of 0s or 1s), then compare the first and second three-bit groups to do bi-phase decoding.
8.4.3.3
WSS 525 Data
The received data contains 20 bits including 6 bits of CRC code; all 20 bits are packed into 3 bytes (LSB aligned in byte
3) and written to the packet with the first received bit becoming LSB of the first payload byte. CRC checking is performed
on the received data (indicated in in the MSB of byte 3; set to ‘0’ in case of no errors). Unused bytes are set to zero.
8.4.3.4
VPS Data
Each pair of two consecutive bits in a payload data byte is a single symbol, biphase coded. 01 represents a 1 symbol,10
represents a 0 symbol. 00 and 11 are biphase errors. The data can be decoded in minimum processor time by using a
look-up table (256 bytes) using the received data as index, which gives the correct decoded biphase data in the ls 4 bits
of each byte and 4 corresponding error flags; e.g.: a stored byte with hex value 0x1B (binary 00.01.10.11) would be
decoded as 1001.0100 (i.e.: the middle two pairs 01 and 10 decode correctly to 1 and 0, but the outer two pairs 00 and
11 are errors).
8.4.3.5
Closed Caption
Closed Caption is stored in transmission order - first received bit becomes LSB of the first payload byte.
8.4.3.6
Moji Data
The Moji Data Line contains 272 bits, made up of a 14-bit prefix, 22 Information Data bytes (176 bits) and an 82-bit Parity
Check. The captured bits are constructed into bytes, LSB first, in transmission order, but the first payload byte of the
packet contains only 6 bits of trans-mitted data in bits 2 -7. Bit 2 corresponds to the first transmitted bit; bits 1 and 0 are
filled with zeros.
This is done in order to align the Information Data bytes to byte boundaries in the constructed data packet. It also means
that the last data byte in the packet contains only 2 transmitted bits (in positions 0 - 1) - the remaining 6 bits are undefined
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7116 | Digital Video to PCI Interface |
| SAA7116H | Video Converter Circuit |
| SAA7145 | |
| SAA7146 | |
| SAA7164 | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7115AHL/V1 | 功能描述:視頻 IC 9-BIT VIDEO DECODER RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAA7115AHL/V1,518 | 功能描述:視頻 IC 9-BIT VIDEO DECODER RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAA7115AHL/V1,557 | 功能描述:視頻 IC 9-BIT VIDEO DECODER RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAA7115AHL/V1-T | 功能描述:視頻 IC 9-BIT VIDEO DECODER RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAA7115HL/V1 | 制造商:NXP Semiconductors 功能描述:IC VIDEO DECODR DIGITAL 100 |
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