Hitachi C28W440N, Service Manual

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19
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Cascadable with another TEA6415C (Internal address can be changed by pin 7 voltage)
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8 inputs (CVBS, RGB, Mac, CHROMA, … )
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6 Outputs
•
Possibility of MAC or chroma signal for each input by switching off the clamp with an external resistor
bridge
•
Bus controlled
•
6.5dB gain between any input and output
•
-55dB crosstalk at 5MHz
•
Fully ESD protected
PINNING PIN VALUE
1. Input : Max : 2Vpp, Input Current : 1mA, Max : 3mA
2. Data : Low level : -0.3V Max:1.5V, High level : 3.0V Max : Vcc+0.5V
3. Input
: Max : 2Vpp, Input Current : 1mA, Max : 3mA
4. Clock : Low level : -0.3V Max:1.5V, High level : 3.0V Max : Vcc+0.5V
5. Input
: Max : 2Vpp, Input Current : 1mA, Max : 3mA
6. Input : Max : 2Vpp, Input Current : 1mA, Max : 3mA
7. Prog
8. Input : Max : 2Vpp, Input Current : 1mA, Max : 3mA
9. Vcc : 12V
10. Input : Max : 2Vpp, Input Current : 1mA, Max : 3mA
11. Input : Max : 2Vpp, Input Current : 1mA, Max : 3mA
12. Ground
13. Output
: 5.5Vpp, Min : 4.5Vpp
14. Output : 5.5Vpp, Min : 4.5Vpp
15. Output : 5.5Vpp, Min : 4.5Vpp
16. Output : 5.5Vpp, Min : 4.5Vpp
17. Output : 5.5Vpp, Min : 4.5Vpp
18. Output : 5.5Vpp, Min : 4.5Vpp
19. Ground
20. Input
: Max : 2Vpp, Input Current : 1mA, Max : 3mA
16.4.
TDA7265:
The TDA7265 is a 25W+25W stereo sound amplifier with mute/stand-by facility. STPA control signal coming
from microcontroller (when it is at high level) activates the mute function. IC is muted when mute port is at low
level. Two stereo audio signals coming from audio module is injected to the inputs of the IC and a power of
12Wrms (10%) is obtained. An external pop-noise circuitry pulls AF inputs of the IC in order to eliminate pop
noise when TV is turned on or off via mains supply connection. It is possible to adjust the gain of the amplifiers by
feedback external resistors.
IN+1 IN+1
IN-(1)
IN-(1)
GND GND
IN-(2)
IN-(2)
IN+(2) IN+(2)
-V
S
-V
S
MUTE MUTE
OUTPUT(2)
OUTPUT(2)
+V
S
+V
S
OUTPUT(1) OUTPUT(1)
-V
S
-V
S