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參數(shù)資料
| 型號(hào)： | TDA7449L |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20 |
| 封裝： | DIP-20 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大?。?/td> | 102K |
| 代理商： | TDA7449L |
TDA7449L
8/14
6.2 Incremental Bus
The TDA7449L receive a start conditions, the correct chip address, a subaddress with the B = 1 incremen-
tal bus): now it is in a loop condition with an autoincrease of the subaddress whereas SUBADDRESS from
"XXX1000" to "XXX1111" of DATA are ignored.
The DATA 1 concern the subaddress sent, and the DATA 2 concern the subaddress sent plus one in the
loop etc, and at the end it receivers the stop condition.
Figure 13.
Table 6. POWER ON RESET CONDITION
7
DATA BYTES
Address = 88 HEX (ADDR:OPEN).
Table 7. FUNCTION SELECTION: First byte (subaddress)
B = 1: INCREMENTAL BUS ACTIVE
B = 0: NO INCREMENTAL BUS
X = DON’T CARE
In Incremental Bus Mode, the three "not used" functions must be addressed in any case. For example to
refresh "Volume = 0dB" and Speaker_R = -40dB", the following bytes must be sent:
INPUT SELECTION
IN2
INPUT GAIN
28dB
VOLUME
MUTE
SPEAKER
MUTE
MSB
LSB
SUBADDRESS
D7
D6
D5
D4
D3
D2
D1
D0
X
B
0
INPUT SELECT
X
B
0
1
INPUT GAIN
X
XB0
0
1
0
VOLUME
X
XB0
0
1
NOT USED
X
B
0
1
0
BASS USED
X
B
0
1
0
1
TREBLE USED
X
B
0
1
0
SPEAKER ATTENUATE "R"
X
B
0
1
SPEAKER ATTENUATE "L"
S
1
0
1
0
ACK
DATA
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D96AU422
X
D3
SUBADDRESS
DATA 1 to DATA n
X
1
D2 D1 D0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7449L_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7450 | 功能描述:音頻放大器 Car Radio Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7451 | 功能描述:音頻放大器 Car Power Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7454 | 功能描述:音頻放大器 Car Radio Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7460B | 功能描述:音頻 DSP INFOTAINMENT SIGNAL RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
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