Pioneer PRO-810HD Service Manual page 179

5
Pin Function
No. Pin Name
HDRV output
Used to select whether to output the VDRV section of the HDRV output signal.
1 HSCTL
High : VDRV section of HDRV is output
Low : VDRV section of HDRV is not output
Composite sync / H SYNC input
Input either the composite synchronization signal or the horizontal synchronization signal.
2 C/HSYNC IN
Input is clamped, and is initiated by capacitor coupling.
SYNC ON VIDEO input
Inputs the SYNC ON VIDEO signal(green).
3 VIDEO IN
Input is sink chip clamped.
Input is initiated by capacitor coupling.
f-V conversion
Converts the horizontal synchronization signal frequency into a voltage.
4 VSEPA
The voltage generated is proportional to the frequency of the horizontal synchronization signal.
Attach a 0.56 µF capacitor between the ground pins.
5 VSYNC IN V SYNC input Inputs the vertical synchronization signal.
Vertical polarity integration
6 CVPOL Integrates the vertical synchronization signal polarity detection circuit.
Attach a 1.5 µF capacitor between this pin and the ground.
Vertical existence integration
7 CVEXI Integrates the vertical synchronization signal existence detection circuit.
Attach a 1 µF capacitor between this pin and the ground.
Setting the clamp position
Used to set the clamp pulse generation position to either the front or back edge of HSYNC
High : The front edge is the generation position
Open : Composite / H SYNC IN : The front edge is the generation position
8 CPSEL
Low : The back edge is the generation position
9 GND Ground
Setting the clamp pulse width
Sets the clamp pulse width according to the attached time constant.
10 CPWID Attach a resistor between this pin and VCC and, a capacitor between this pin and GND.
When R = 3.9kΩ and C = 100pF, pulse width is approximately 400 ns.
Set the resistor to register an abnormality at 1kΩ.
VDRV output
11 VDRV Outputs the vertical synchronization signal.
The output signal has positive polarity.
Clamp output
12 CLAMP Outputs the clamp pulse generated from the vertical synchronization signal.
The output signal has a positive polarity.
HDRV output
13 HDRV Outputs the clamp pulse generated from the horizontal synchronization signal.
The output signal has positive polarity.
14 Vcc Power supply
Vertical existence output
15 EXIV
Indecates whether the vertical synchronization signal exists.
Vertical polarity output
16 POLV
Indicates the polarity of the vertical synchronization signal.
Horizontal existence output
17 EXIH
Indicates whether the horizontal synchronization signal exists.
Horizontal polarity output
18 POLH
Indicates the polarity of the horizontal synchronization signal.
5
6
VIDEO IN : The back edge is the generation position
PRO-1010HD
6
7
Pin Function
7
8
A
B
C
D
E
F
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