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參數(shù)資料
| 型號： | TDA7333 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | RDS/RBDS PROCESSOR |
| 中文描述： | 鐵路發(fā)展策略/無線廣播數(shù)據(jù)處理器 |
| 文件頁數(shù)： | 18/21頁 |
| 文件大?。?/td> | 656K |
| 代理商： | TDA7333 |
TDA7333
18/21
Figure 18. read out RDS data and related flags, no update of rds_int and rds_bd_ctrl registers
Figure 19. write rds_int registers in spi mode,reading 1 register
The content of the rds registers is clocked out on DATAOUT pin in the following order:
rds_int[7:0], rds_qu[7:0], rds_corrp[7:0], rds_bd_l[7:0], rds_bd_h[7:0], rds_ctrl[7:0], sinc4reg[7:0], testreg[7:0]
For the meaning of the single bits please refer to the pages 13 to 15 .
Note : After 40 bit clocks the whole RDS data and flags are clocked out.
9
A typical rds data transfer could work like this:
1. The micro sets the interrupt source to “RDS block” interrupt by setting itsrc[2:0] to 001.
2. The micro continuously checks the rds_int[7:0] bits for the first interrupt ( rds_int[0] goes high). If
there is no interrupt it stops the transfer after these 8 bits. No update of the rds_int[7:0] is per-
formed.
3. Once there is an interrupt detected the micro will also clock out all the other RDS bits (rds_qu[7:0],
rds_corrp[7:0], rds_bd_h[7:0], rds_bd_l[7:0]).
4. The next interrupt can not be expected before 22ms.
The above example is working by polling the rds_int[0] bit. An easier and better application is possible by
checking the RDS interrupt pin INTN ( see below ) and starting the transfer only when this interrupt is
present.
Application Notes
The output pin INTN acts as an interrupt pin. The source of interrupt is programmable through the register
rds_int ( cf page 11), the value on the pin is the inverted value of the bit rds_int[0] ( i.e this interrupt pin is active
low). With the help of this pin an interrupt driven request of the rds data is possible (The external processor only
starts the transfer if an interrupt is active).
CSN
DATAIN
DATAOUT
CLK
rds_int[7:0]
rds_qu[7:0]
rds_corrp[7:0]
rds_bd_h[7:0]
rds_bd_l[7:0]
{0,x,x,x,x,x,x,x}
CSN
DATAIN
DATAOUT
CLK
rds_int[7:0]
{1,rds_int[6:0]}
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| TDA7334 | LOW NOISE STEREO PREAMPLIFIER |
| TDA7334D | LOW NOISE STEREO PREAMPLIFIER |
| TDA7335 | STEREO PREAMP AMS DOLBY B* NOISE REDUCTION PROCESSOR |
| TDA7336 | STEREO PREAMP+ AMS+ DOLBY B* NOISE REDUCTION PROCESSOR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7333013TR | 功能描述:音頻 DSP RDS/RBDS PROCESSOR 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 |
| TDA7333N | 功能描述:音頻放大器 RDS/RBDS processor Demodulation 3.3V 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 |
| TDA7333NTR | 功能描述:音頻放大器 RDS/RBDS processor Demodulation 3.3V 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 |
| TDA7334 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW NOISE STEREO PREAMPLIFIER |
| TDA7334D | 功能描述:音頻放大器 Stereo Preamplifier 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 |
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