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參數(shù)資料
| 型號： | STV8226 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Multistandard TV Audio Processor and Digital Sound Demodulator |
| 中文描述： | 多標(biāo)準(zhǔn)電視音頻處理器和數(shù)字聲音解調(diào)器 |
| 文件頁數(shù)： | 67/97頁 |
| 文件大?。?/td> | 1871K |
| 代理商： | STV8226 |
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STV82x6
Register List
Note:
The time-out default value is optimum and does not normally need to be changed.
AUTO_STAT
Detection Standard Status Register
ZWEITON_TIME[
2:0]
100
Zweiton Detection Time-out
000: 256 ms
001: 512 ms
010: 768 ms
011: 1024 ms
100: 1280 ms (Default)
101: 1536 ms
110: 1792 ms
111: 2040 ms
Address (hex): 54h
Type: R
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ST_ID
STEREO_STA
TE
MONO_STATE
AUTO_ON
STEREO_SID[1:0]
MONO_SID[1:0]
Bit Name
Reset
Function
ST_ID
0
Stereo Mode Detection flag activated when a stereo standard coming from the demodulator
selected on Loudspeaker output. Stereo transmission modes are:
- Zweiton stereo (ZWT_DET&ST&DM = 110, indifferently German or Korean standard)
- NICAM stereo with backup (CBI = 1000)
- NICAM stereo with no backup (CBI = 0000)
The stereo flag is also output on ST pin to control an external indicator (an LED, for instance)
STEREO_STATE
0
When AUTOSTD is ON and a standard has been detected, the FSM has two “stable states”. These
flags indicate whether the FSM is in the state “mono-det” (mono standard detected) or “stereo-det”
(stereo standard detected). If at least one stereo standard is enabled, the “mono-det” state is only
transitory.
MONO_STATE
0
AUTO_ON
0
Automatic Standard Recognition System Status
0: Automatic Standard Recognition System is OFF
1: Automatic Standard Recognition System is ON
STEREO_SID[1:0]
00
Identification of the detected TV sound standard. See
Table 22
.
MONO_SID[1:0]
00
Table 22: TV Sound Standards
System
Mono Sound
(MHz)
MONO_SID
[1:0]
LDK_SW
DK_DEV
[1:0]
Stereo Sound
(MHz)
STEREO_SID
[1:0]
M/N
4.5 (FM 27k)
00
X
XX
4.724 (Zweiton A2+)
00
B/G
5.5 (FM 50k)
01
X
XX
5.85 (NICAM 40%)
00
X
XX
5.742 (Zweiton A2)
01
I
6.0 (FM 50k)
10
X
XX
6.552 (NICAM 100%)
00
Bit Name
Reset
Function
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| STV8237 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
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