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7403 Fiches technique(PDF) 18 Page - STMicroelectronics

No de pièce 7403
Description  BASIC SIGNAL PROCESSOR
Download  26 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

7403 Fiches technique(HTML) 18 Page - STMicroelectronics

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I
2C BUS INTERFACE DESCRIPTION
Interface Protocol
The interface protocol comprises:
-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)
D97AU627
S
1000110 R/W ACK
ACK
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
XI
SUBADDRESS
DATA 1 to DATA n
AZ T
A3 A2 A1 A0
DATA
S = Start
ACK = Acknowledge
AZ = AutoZero-Remain
T = Testing
I = Autoincrement
P = Stop
MAX CLOCK SPEED 500kbits/s
The transmitted data is automatically updated af-
ter each ACK.
Transmission can be repeated without new chip
address.
Auto increment
If bit I in the subaddress byte is set to ”1”, the
autoincrement of the subaddress is enabled.
TRANSMITTED DATA (send mode)
MSB
LSB
XX
XX
ST
SM
X
X
SM = Soft mute activated
ST = Stereo
X = Not Used
SUBADDRESS (receive mode)
MSB
LSB
FUNCTION
X
AZ
T
I
A3A2
A1A0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Not allowed
Loudness / Auto-Zero
Volume
Softmute / Beep
Bass / Treble Attenuator
Bass / Treble Configuration
Speaker attenuator LF
Speaker attenuator LR
Speaker attenuator RF
Speaker attenuator RR / Blanktime adjust
Stereodecoder
Noiseblanker
Fieldstrength Control
Configuration
Stereodecoder Adjustment
Testing
T = Testmode
I = Autoincrement
AZ = Auto Zero Remain
X = not used
TDA7403
18/26


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