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参数资料
| 型号： | TDA6812-5 |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP40 |
| 封装： | PLASTIC, DIP-40 |
| 文件页数： | 29/32页 |
| 文件大小： | 1639K |
| 代理商： | TDA6812-5 |
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TDA 6812-5
Semiconductor Group
118
Control Section
All functions are controlled by an I2C 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 I2C 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 I2C Bus interface for transfer to the
C.
R/W = 0
→ Read (Listen)
R/W = 1
→ Write (Talk)
Right
Wrong
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
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
000010R/W
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