TA1343N
TOSHIBA Bipolar Linear IC Silicon Monolithic
TA1343N
TV Sound Processor
TA1343N is a sound processor controlled by I2C bus. It incorporates the following: 2-channel input, 3-channel output signal processing circuit, phase shift circuit for surround, and LPF for woofer channel. ALS (Automatic Level Suppresser) circuit which prevents distort the signal in large signal condition for woofer channel is also incorporated
Features
· Sound processing circuit · 2 ch inputs (Lch, Rch) · 3 ch out.
TV SOUND PROCESSOR
TA1343N
TOSHIBA Bipolar Linear IC Silicon Monolithic
TA1343N
TV Sound Processor
TA1343N is a sound processor controlled by I2C bus. It incorporates the following: 2-channel input, 3-channel output signal processing circuit, phase shift circuit for surround, and LPF for woofer channel. ALS (Automatic Level Suppresser) circuit which prevents distort the signal in large signal condition for woofer channel is also incorporated
Features
· Sound processing circuit · 2 ch inputs (Lch, Rch) · 3 ch outputs (Lch, Rch, Wch) · Input matrix switch · Volume control · Bass, treble, and balance adjustment · Woofer level and surround effect level adjustment · ALS (automatic level suppresser) circuit · Built-in LPF for bass boost · Surround circuit · Phase shift surround system · 2 modes stereo surround · Pseudo stereo mode Weight: 1.22 g (typ.)
1
2002-02-12
TA1343N
Block Diagram
Treble HPF (L)
Woofer LPF3
Woofer LPF2
Woofer LPF1
Volume Filter
Bass LPF (L)
Woofer Filter
24
2
23
22
21
20
19 ALS SW AGC Det + 0dB /-5dB
18
17
16 +
15
14
I C bus interfaxe
Level Control DAC
Rch Output 13 + 12 Wch Output Bass boost SW
VCC (9 V)
Lch Output
SDA
SCL
L.P.F
L-R Level Control
L.P.F
Woofer Level Control Bass& Treble Control
4f f
Phase sifter +
-
0dB /-5dB
Input matrix
Bias Reg.
1 O.C.
2 B4 B3
3 B2
4
5 B1 Lch Input
6 GND
7 Rch Input
8 Bias Filter
9
10 Bass LPF (R)
Treble HPF (R)
Volume&Balance Control 11
Bass& Treble Control
2
2002-02-12
TA1343N
Termina.