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參數(shù)資料
| 型號(hào)： | TDA7344 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DIGITAL CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| 中文描述： | 數(shù)字控制的矩陣環(huán)繞聲音頻處理器 |
| 文件頁(yè)數(shù)： | 8/20頁(yè) |
| 文件大小： | 201K |
| 代理商： | TDA7344 |
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INTERFACE FEATURES
- Due to the fact that the MSB is used to select
if the byte transmitted is a subaddress (func-
tion) or a data (value), between a start and
stop condition, is possible to receive, how
manysubaddressesand datas as wanted.
- The subaddress(function) is fixed until a new
subaddress is transmitted, so the TDA7344
can receive how many data as wanted for the
selected subaddress (without the need for a
new start condition)
- If TDA7344 receives a subaddress with the
LSB = 1 the incremental bus is selected, so it
enters in a loop condition that means that
every acknowledge will increase automat-
ically the subaddress (function) and it re-
ceives the data related to the new subad-
dress.
EXAMPLES
1) NOINCREMENTAL BUS
TDA7344 receives a start condition, the correct
chip address, a subaddresswith the LSB = 0 (no
incremental bus), N-datas (all these datas con-
cern the subaddress selected), a new subad-
dress, N-data, a stop condition.
So it can receive in a single transmission how
many subaddress are necessary, and for each
subaddresshow many data are necessary.
2) INCREMENTAL BUS
TDA7344 receives a start condition, the correct
chip address a subaddress with the LSB = 1 (in-
cremental bus): now it is in a loop condition with
an autoincreaseof the subaddress.
The first data that it receives doesn’t concern the
subaddress sended but the next one, the second
one concerns the subaddress sended plus two in
the loop etc, and at the end it receives the stop
condition.
In the pictures there are some examples:
S = start
A
0
1
CHIP ADDRESS
80 (HEX)
82 (HEX)
ACK= acknowledge
B = 1 incrementalbus, B = 0 no incrementalbus
P = stop
SOFTWARE SPECIFICATION
InterfaceProtocol
The interfaceprotocol comprises:
A startcondition (s)
A chip address byte, containing the TDA7344
address (the 8thbit of the byte must be 0). The
TDA7344 must alwaysacknowledgeat the end
of each transmitted byte.
A subaddress(function) bytes (identifiedby the
MSB = 0)
A sequence of dates and subaddresses (N
bytes + achnowledge. The dates are identified
by MSB = 1, subaddressesby MSB = 0)
A stopcondition (P)
1) onesubaddress,with n data concerningthat subaddress(no incrementalbus)
ACK = Achnowledge
S = Start
P = Stop
TDA7344
8/20
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7344P | DIGITAL CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7344S | DIGITAL CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7345 | DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7345D | DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7346D | DIGITAL CONTROLLED SURROUND SOUND MATRIX |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7344P | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DIGITAL CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7344S | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:TONE/VOLUME/BALANCE CONTROL, 42 Pin, Plastic, SDIP |
| TDA7345 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7345D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7346 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DIGITAL CONTROLLED SURROUND SOUND MATRIX |
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