參數(shù)資料
型號(hào): tda 6812-5
廠商: SIEMENS AG
英文描述: TV-Stereo Processor(TV 立體聲處理器)
中文描述: 電視,立體聲處理器(電視立體聲處理器)
文件頁數(shù): 6/32頁
文件大?。?/td> 1639K
代理商: TDA 6812-5
TDA 6812-5
Semiconductor Group
118
Control Section
All functions are controlled by an
I
2
C Bus interface which can be both a listener and a talker. The
currently valid data are stored in a latch block. The telegram structure is as follows:
start condition - chip address - any number of bytes - stop condition
The following conditions apply to the data bytes:
Before the actual data byte (with setting information) a subaddress byte
must always be
transmitted, which the
I
2
C Bus still interprets as a data byte.
Example: Headphones (HP) volume is to be increased in several steps.
Different subaddresses can be used within a telegram, ie without a new start condition. But the
change between listener and talker must always be made by stop condition - start condition - chip
address. A start condition and a chip address (talk) must always be transmitted before reading. This
loads the data that are to be read out on the
I
2
C Bus interface for transfer to the
μ
C.
R/W = 0
Read (Listen)
R/W = 1
Write (Talk)
Right
Start condition
Chip address 84 (Hex)
Subaddress volume HP 03 (Hex)
Volume Step 8 08 (Hex)
Subaddress volume HP 03 (Hex)
Volume step 9 09 (Hex)
Subaddress volume HP 03 (Hex)
Volume Step 10 0A (Hex)
Stop condition
Wrong
Start condition
Chip address 84 (Hex)
Subaddress volume HP 03 (Hex)
Volume Step 8 08 (Hex)
Volume step 9 09 (Hex)
Volume Step 10 0A (Hex)
Stop condition
Chip Address
MSB
LSB
1
0
0
0
0
1
0
R/W
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