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| 型號： | ADAV801 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | Codec |
| 英文描述： | Audio Codec for Recordable DVD |
| 中文描述： | 音頻編解碼器可刻錄DVD |
| 文件頁數(shù)： | 24/56頁 |
| 文件大?。?/td> | 1405K |
| 代理商： | ADAV801 |
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ADAV801
Rev. 0 | Page 24 of 56
0
DIR BLOCK
DIR_LF
100nF
3k
AVDD
6.8nF
Figure 42.
one
l Dig
ADAV801 can receive and tra
958 serial str
/EBU is a profe
sumer and pro
tended to f
rds. Con
e full specification
for th
udio
tand
PDIF, AES/EBU
nsmit S
d,
958 has
ta sheet is
e
e digita
audio control info
d. This encoding me
itted signal. As c
al data end up with m
encoded data, while 0s in
e biphase-mark encod
en bit bounda
betwe
e-mark
content of the
in the
e biphase-
ta do not. Note
a transition
s
DIR Loop Filter Comp
nts
Seria
The
IEC-
and AES
both con
not in
standa
ital A
Transmission S
ards
, and
eams. SPDIF is a consumer audio standar
ssional audio standard. IEC-
fessional definitions. This da
ully define or to provide a tutorial for thes
tact the international standards-setting bodies
s.
All thes
data and
metho
transm
origin
mark
that th
l audio communication schemes encode audio
rmation using the biphas
thod minimizes the dc
an be seen from Figure 43, 1s
idcell transitions in th
the original da
ed
data always ha
ries.
0
1
1
1
0
0
0
CLOCK
(2 TIMES BIT RATE)
BIPHASE-MARK
DATA
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).
Preambles 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
X
11100010 or 00011101
Y
11100100 or 00011011
Z
11101000 or 00010111
Channel
Left
Right
Left and CS block start
X
Y
Z
Y
X
Y
0
PREAMBLES
LEFT CH
FRAME 191
FRAME 0
FRAME 1
RIGHT CH
LEFT CH
RIGHT CH
LEFT CH
RIGHT CH
SUB-
FRAME
SUB-
FRAME
0
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 en
polarity transition
between bit boundaries.
ding method results in a
co
1
1
1
0
0
0
1
0
1
1
1
0
0
1
0
0
1
1
1
0
1
0
0
0
0
PREAMBLE X
PREAMBLE Y
PREAMBLE Z
Figure 45. Preambles
The serial digital a
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 1,176 frames when the interconnect is imple-
menting the so-called subcode scheme (EIAJ CP-2401). Th
organization of the channel status block, frames, and subframes
is shown in Table 9 and Table 10. Note that the ADAV801
supports the professional audio standard from a software
point of view only. The digital interface supports only
consumer mode.
Table 9. Consumer Audio Standard
Address
7
6
5
rganized
e
Bits
3
udio communication scheme is o
Data
4
2
1
0
N
Channel
Status
Emphasis
Copy-
right
Non-
Audio
Pro
Co
= 0
/
n
N + 1
N + 2
Category Code
Channel Number
Source Number
N + 3
Reserved
Clock
Accuracy
Sampling Frequency
N + 4
N + 5 to
(N + 23)
N = 0x20 for receiver channel status buffer.
N = 0x38 for transmitter channel status buffer.
Reserved
Word Length
Reserved
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADAV801ASTZ | Audio Codec for Recordable DVD |
| ADAV801ASTZ-REEL | Audio Codec for Recordable DVD |
| ADC0800PCD | ADC0800 8-Bit A/D Converter |
| ADC0800PD | ADC0800 8-Bit A/D Converter |
| ADC0800 | ECONOLINE: REC3-S_DRW(Z)/H* - 3W DIP Package- 1kVDC Isolation- Wide Input 2:1 & 4:1- Regulated Output- 100% Burned In- UL94V-0 Package Material- Continuous Short Circiut Protection- Efficiency to 80% |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADAV801AST | 制造商:Analog Devices 功能描述:AUDIO CODEC FOR RECORDABLE DVD - Bulk |
| ADAV801ASTZ | 功能描述:IC CODEC AUDIO R-DVD 3.3V 64LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態(tài)范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
| ADAV801ASTZ-REEL | 功能描述:IC CODEC AUDIO R-DVD 3.3V 64LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態(tài)范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
| ADAV802AST | 制造商:Analog Devices 功能描述:AUDIO CODEC FOR RECORDABLE DVD - Bulk |
| ADAV802ASTZ | 制造商:Analog Devices 功能描述: |
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