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TDA6812-5 Fiches technique(PDF) 6 Page - Siemens Semiconductor Group |
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TDA6812-5 Fiches technique(HTML) 6 Page - Siemens Semiconductor Group |
6 / 32 page 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 µC. 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 |
Numéro de pièce similaire - TDA6812-5 |
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Description similaire - TDA6812-5 |
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