TDA7340 Datasheet, PDF (10/16 Pages) STMicroelectronics – AUDIO SIGNAL PROCESSOR

TDA7340
SUBADDRESS (RECEIVE MODE)
MSB
X
X
T = Testmode
T
I
A3
A2
A1
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
I = Autoincrement X = Not Used
LSB
A0
0
1
0
1
0
1
0
1
0
1
FUNCTION
Input Selector
Loudness
Volume
Bass, Treble
Speaker Attenuator LF
Speaker Attenuator LR
Speaker Attenuator RF
Speaker Attenuator RR
Mute
Stereodecoder
TRANSMITTED DATA (SEND MODE)
MSB
LSB
X X X X ST SM ZM P
P = Pause (low active)
ZM =Zero Crossing Muted (HIGH = active)
SM = Soft mute activated (HIGH = active)
DATA BYTE SPECIFICATION
X = not relevant; set to ”1”during testing
INPUT SELECTOR
ST = Stereo (HIGH = active)
X = Not used
The transmitted data is automatically updated af-
ter each 9th clock pulse.
Transmission can be repeated without new chi-
paddress.
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
FUNCTION
0
0
0
0 Quasi Diff CD
1
0
0
0 Full Diff CD
0
0
1 Stereo Decoder
0
1
0 Cassette Stereo
1
0
1
1 AM Mono
1
0
0 Telephone Mono
1
1
0
1 Beep Mono
0
0
1
1 AM Stereo
0
1
0
1 Not allowed
1
1
0 Not allowed
1
1
1 Not allowed
0
0
11.25dB gain
0
1
7.5dB Gain
1
0
3.75dB Gain
1
1
0 dB Gain
0
0dB Differential input Gain (CD Input)
1
-6dB Differential input Gain (CD Input)
For example to select quasi diff CD input with 0dB diff gain and 7.5dB input gain the Data Byte is:
00001000
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