- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372115 > SAA7284GP (NXP SEMICONDUCTORS) Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems PDF資料下載
參數(shù)資料
| 型號： | SAA7284GP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 14 X 20 MM, 2.80 MM HEIGHT, PLASTIC, SOT-319-2, QFP-64 |
| 文件頁數(shù)： | 19/40頁 |
| 文件大?。?/td> | 182K |
| 代理商： | SAA7284GP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁當(dāng)前第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
1996 Oct 24
19
Philips Semiconductors
Preliminary specification
Terrestrial digital sound decoder for
conventional intercarrier PLL-IF systems
SAA7284
Channel coding
Time-slots are encoded as biphase mark data. Each bit
transmitted is represented by a symbol comprising two
consecutive binary states. The first state of a symbol is
always different from the second state of the previous
symbol. The second state of the symbol is identical to the
first if the bit being transmitted is logic 0, however it is
different if the bit is logic 1 (see Table 14).
Table 14
Channel coding
Preambles
Preambles are specific patterns providing synchronization
and identification of the sub-frames and blocks.
A set of three preambles is used. These preambles are
transmitted in the time allocated to four time-slots and are
represented by eight successive states. The first state of
the preamble is always different from the second state of
the previous symbol. Depending on this state the
preambles are as shown in Table 15.
PRECEDING STATE
0
1
TRANSMITTED BIT
CHANNEL CODING
0
1
11
10
00
01
Table 15
Preambles
The preambles preceding each digital audio sample are
used to indicate the beginning of a sample as follows:
Preamble B
indicates the start of Channel A data and
the beginning of a block
Preamble M
indicates the start of Channel A data but
not the beginning of a block
Preamble W
indicates the start of Channel B data.
Channel status
The channel status information is organized in 192-bit
words. The first bit of each word is carried in the frame with
Preamble B. The 192-bit word is organized into sections
as shown in Table 16.
PRECEDING STATE
0
1
PREAMBLE
CHANNEL CODING
B
M
W
11101000
11100010
11100100
00010111
00011101
00011011
Table 16
Channel status codes
BIT
CODE
DESCRIPTION
0
1
2
0
0
1
consumer
sound data
digital copy permitted
indicates digital de-emphasis switched in
indicates digital de-emphasis switched out
category code
source code (don't care)
channel number (don't care)
sampling frequency (32 kHz)
clock accuracy (level II)
3 and 4
00
11
0
00
5
6 and 7
8 to 15
16 to 19
20 to 23
24 to 27
28 and 29
30 to 191
00110001
0000
0000
1100
00
all 0s
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7384 | Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems |
| SAA7284 | Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems |
| SAA7284ZP | Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems |
| SAA7324 | Digital servo processor and Compact Disc decoder with integrated DAC (CD10 II)(具有綜合數(shù)模轉(zhuǎn)換器（DAC）的數(shù)字伺服處理器和光盤譯碼器) |
| SAA7325H | Digital servo processor and Compact Disc decoder with integrated DAC CD10 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7284ZP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems |
| SAA7310 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS decoder for compact disc systems |
| SAA7310GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS decoder for compact disc systems |
| SAA7310P | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS decoder for compact disc systems |
| SAA7324 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder with integrated DAC CD10 II |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。