E-TDA7406 STMicroelectronics, E-TDA7406 Datasheet - Page 45

• Manufacturer Part Number: E-TDA7406
• Description: Audio DSPs CAR RADIO SIGNAL
• Manufacturer: STMicroelectronics

Specifications of E-TDA7406

• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-44
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7406
13
13.1
13.1.1
13.1.2
13.1.3
S 1 0 0 0 1 1 0 R/W ACK T AZ I
MSB
CHIP ADDRESS
I
Interface Protocol
The interface protocol comprises:
S = Start
R/W = “0” -> Receive-Mode (Chip could be programmed by µP)
ACK = Acknowledge
P = Stop
MAX CLOCK SPEED 500kbits/s
Auto increment
If bit I in the subaddress byte is set to “1”, the auto increment of the subaddress is enabled.
TRANSMITTED DATA (send mode)
SM = Soft mute activated
ST = Stereo
P = Pause
X = Not Used
The transmitted data is automatically updated after each ACK.
Transmission can be repeated without new chip address.
Reset Condition
A Power-On-Reset is invoked if the Supply-Voltage is below than 3.5V. After that, the
following data is written automatically into the registers of all subaddresses:
The programming after POR is marked bold-face / underlined in the programming tables.
With this programming all the outputs are muted to V
2
C bus interface
MSB
MSB
–
–
–
–
–
X
1
“1” -> Transmission-Mode (Data could be received by µP)
a start condition (S)
a chip address byte (the LSB bit determines read / write transmission)
a subaddress byte
a sequence of data (N-bytes + acknowledge)
a stop condition (P)
LSB
X
1
MSB
X
1
SUBADDRESS
A
A
X
1
A
A
LSB
A ACK
X
1
REF
MSB
(V
OUT
DATA 1...DATA n
P
1
= V
DATA
DD
/2).
ST
I2C bus interface
1
LSB
ACK
LSB
LSB
SM
0
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P