参数资料
| 型号： | ADAV803ASTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/60页 |
| 文件大小： | 0K |
| 描述： | IC CODEC AUDIO R-DVD 3.3V 64LQFP |
| 标准包装： | 1 |
| 类型： | 音频编解码器 |
| 数据接口： | 串行 |
| 分辨率（位）： | 24 b |
| ADC / DAC 数量： | 2 / 2 |
| 三角积分调变： | 无 |
| 动态范围，标准 ADC / DAC (db)： | 102 / 101 |
| 电压 - 电源，模拟： | 3 V ~ 3.6 V |
| 电压 - 电源，数字： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
| 配用： | EVAL-ADAV803EBZ-ND - BOARD EVALUATION FOR ADAV803 |
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ADAV803
Rev. A | Page 24 of 60
Serial Digital Audio Transmission Standards
The ADAV803 can receive and transmit S/PDIF, AES/EBU, and
IEC-958 serial streams. S/PDIF is a consumer audio standard,
and AES/EBU is a professional audio standard. IEC-958 has
both consumer and professional definitions. This data sheet is
not intended to fully define or to provide a tutorial for these
standards. Contact the international standards-setting bodies
for the full specifications.
All these digital audio communication schemes encode audio
data and audio control information using the biphase-mark
method. This encoding method minimizes the dc content of the
transmitted signal. As can be seen from Figure 43, 1s in the
original data end up with midcell transitions in the biphase-
mark encoded data, while 0s in the original data do not. Note
that the biphase-mark encoded data always has a transition
between bit boundaries.
01
11
00
0
47
56-
043
CLOCK
(2 TIMES BIT RATE)
BIPHASE-MARK
DATA
Figure 43. Biphase-Mark Encoding
Digital audio-communication schemes use preambles to
distinguish among channels (called subframes) and among
longer-term control information blocks (called frames). Pream-
bles are particular biphase-mark patterns, which contain encoding
violations that allow the receiver to uniquely recognize them.
These patterns and their relationship to frames and subframes
are shown in Table 8 and Figure 44.
Table 8. Biphase-Mark Encode Preamble
Biphase Patterns
Channel
X
11100010 or 00011101
Left
Y
11100100 or 00011011
Right
Z
11101000 or 00010111
Left and CS block start
XY
Z
Y
X
Y
0
4756-
044
PREAMBLES
LEFT CH
FRAME 191
FRAME 0
FRAME 1
RIGHT CH
LEFT CH
RIGHT CH
LEFT CH
RIGHT CH
SUBFRAME
Figure 44. Preambles, Frames, and Subframes
The biphase-mark encoding violations are shown in Figure 45.
Note that all three preambles include encoding violations.
Ordinarily, the biphase-mark encoding method results in a
polarity transition between bit boundaries.
11
1
0
00
1
0
11
1
0
01
0
11
1
0
10
0
0
475
6-
04
5
PREAMBLE X
PREAMBLE Y
PREAMBLE Z
Figure 45. Preambles
The serial digital audio communication scheme is organized
using a frame and subframe construction. There are two
subframes per frame (ordinarily the left and right channel).
Each subframe includes the appropriate 4-bit preamble, up to
24 bits of audio data, a validity (V) bit, a user (U) bit, a channel
status (C) bit, and an even parity (P) bit. The channel status bits
and the user bits accumulate over many frames to convey
control information. The channel status bits accumulate over a
192 frame period (called a channel status block). The user bits
accumulate over 1176 frames when the interconnect is imple-
menting the so-called subcode scheme (EIAJ CP-2401). The
organization of the channel status block, frames, and subframes
supports the professional audio standard from a software
point of view only. The digital interface supports only
consumer mode.
Table 9. Consumer Audio Standard
Data Bits
Address1
7
6
5
4
3
2
1
0
N
Channel
Status
Emphasis
Copy-
right
Non-
Audio
Pro/
Con
= 0
N + 1
Category Code
N + 2
Channel Number
Source Number
N + 3
Reserved
Clock
Accuracy
Sampling Frequency
N + 4
Reserved
Word Length
N + 5 to
(N + 23)
Reserved
1 N = 0x20 for receiver channel status buffer.
N = 0x38 for transmitter channel status buffer.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADAV803ASTZ-REEL | 功能描述:IC CODEC AUDIO R-DVD 3.3V 64LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 编解码器 系列:- 标准包装:2,500 系列:- 类型:立体声音频 数据接口:串行 分辨率（位）:18 b ADC / DAC 数量:2 / 2 三角积分调变:是 S/N 比，标准 ADC / DAC (db):81.5 / 88 动态范围，标准 ADC / DAC (db):82 / 87.5 电压 - 电源，模拟:2.6 V ~ 3.3 V 电压 - 电源，数字:1.7 V ~ 3.3 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-WFQFN 裸露焊盘 供应商设备封装:48-TQFN-EP（7x7） 包装:带卷 (TR) |
| ADAV804AST | 制造商:Analog Devices 功能描述:AUDIO CODEC FOR RECORDABLE DVD - Bulk |
| ADAV804ASTZ | 制造商:Analog Devices 功能描述: |
| ADB.1X40 | 制造商:FACOM 功能描述:SCREWDRIVER STUB POZI NO.1 制造商:FACOM 功能描述:SCREWDRIVER, STUB, POZI NO.1 制造商:FACOM 功能描述:SCREWDRIVER, STUB, POZI NO.1; Overall Length:90mm; Blade Length:40mm; SVHC:No SVHC (19-Dec-2012); Range:PZ1; Screwdriver Type:Pozi; Tip / Nozzle Size:PZ1; Tip / Nozzle Style:Pozidriv ;RoHS Compliant: NA |
| ADB0039 | 制造商:AVOCENT 功能描述:Cyclades - Crossover adapter - RJ-45 (M) - RJ-45 (F) |
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