- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385094 > AK4683EQ (ASAHI KASEI POWER DEVICES CORP) Asynchronous Multi-Channel Audio CODEC with DIR/T PDF資料下載
參數(shù)資料
| 型號： | AK4683EQ |
| 廠商： | ASAHI KASEI POWER DEVICES CORP |
| 元件分類： | 消費家電 |
| 英文描述： | Asynchronous Multi-Channel Audio CODEC with DIR/T |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 57/84頁 |
| 文件大?。?/td> | 1077K |
| 代理商： | AK4683EQ |
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頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁當(dāng)前第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁
[AK4683]
MS0427-E-02
2007/04
- 57 -
■
Non-PCM (AC-3, MPEG, etc.) and DTS-CD Bitstream Detection
The AK4683 has a Non-PCM steam auto-detection function. When the 32bit mode Non-PCM preamble based on Dolby
“AC-3 Data Stream in IEC60958 Interface” is detected, the AUTO bit goes “1”. The 96bit sync code consists of 0x0000,
0x0000, 0x0000, 0x0000, 0xF872 and 0x4E1F. Detection of this pattern will set the AUTO bit “1”. Once the AUTO bit
is set “1”, it will remain “1” until 4096 frames pass through the chip without additional sync pattern being detected.
When those preambles are detected, the burst preambles Pc and Pd that follow those sync codes are stored to registers.
The AK4683 also has the DTS-CD bitstream auto-detection function. When The AK4683 detects DTS-CD bitstreams,
DTSCD bit goes to “1”. When the next sync code does not come within 4096 flames, DTSCD bit goes to “0” until
when the AK4683 detects the stream again.
■
Burst Preambles in non-PCM Bitstreams
sub-frame of IEC60958
0
16 bits of bitstream
3 4
7 8
11 12
27 28 29 30 31
preamble
Aux.
LSB
MSB V U C P
0
15
Pa Pb Pc Pd
Burst_payload
stuffing
repetition time of the burst
Figure 37. Data structure in IEC60958
Preamble word
Pa
Pb
Pc
Pd
Length of field
16 bits
16 bits
16 bits
16 bits
Contents
sync word 1
sync word 2
Burst info
Length code
Value
0xF872
0x4E1F
see Table 61
Numbers of bits
Table 60. Burst preamble words
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4683 | Asynchronous Multi-Channel Audio CODEC with DIR/T |
| AK4702EQ | 2ch DAC with AV SCART switch |
| AK4702 | 2CH DAC WITH AV SCART SWITCH |
| AK4703 | AV SCART switch |
| AK4703VQ | AV SCART switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4683EQP | 制造商:AKM Semiconductor Inc 功能描述:Audio Codec 2ADC / 4DAC 24-Bit 64-Pin LQFP |
| AK4685 | 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with Differential Analog I/O |
| AK4685EQ | 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with Differential Analog I/O |
| AK4686 | 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with Capless Stereo Selector |
| AK4686EQ | 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with Capless Stereo Selector |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。