tda6812-5 ETC-unknow, tda6812-5 Datasheet - Page 6

• Manufacturer Part Number: tda6812-5
• Description: Tv-stereo Processor
• Manufacturer: ETC-unknow

Control Section
All functions are controlled by an I
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
Example: Headphones (HP) volume is to be increased in several steps.
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
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
Chip Address
MSB
1
R/W = 0
R/W = 1
Semiconductor Group
•
0
Read (Listen)
Write (Talk)
•
0
2
C Bus still interprets as a data byte.
•
0
2
C Bus interface which can be both a listener and a talker. The
•
0
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
•
1
2
C Bus interface for transfer to the C.
118
•
0
LSB
R/W
TDA 6812-5