參數(shù)資料
型號(hào)： MC44011FN
廠商： MOTOROLA INC
元件分類： 消費(fèi)家電
英文描述： BUS CONTROLLED MULTISTANDARD VIDEO PROCESSOR
中文描述： SPECIALTY CONSUMER CIRCUIT, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 38/52頁
文件大?。?/td> 835K
代理商： MC44011FN
MC44011
38
MOTOROLA ANALOG IC DEVICE DATA
Table 18. External Components
Pin
Name
Function
1, 3
Video 1,
Video 2
Input signals must be capacitor–coupled. The 470
resistors protect the pins from ESD and RFI. The
75
resistors are not required by the MC44011, but depend on the signal source. The 47 pF capacitors
filter high frequency noise.
2
ACC Filter
The 0.1
μ
F ceramic capacitor filters the Automatic Gain circuit.
4
Vert Sync
The pull–up resistor is required for this open–collector output.
Pull–up resistors are required on each I2C line since outputs are open–collector. They are typically
located at the master device.
5, 6
SCL, SDL
7
Field ID
No external components required.
8
Burst Gate
No external components required.
9
Iref
The 110 k
resistor provides
≈
32
μ
A from the 5.0 V source. This pin must be well filtered to the Quiet
Ground (Pin 10).
10
Quiet Gnd
This is the Reference Ground for Pin 9 and the PLL1 Filter.
11
PLL1 Filter
The 100 k
resistor, and the 0.1
μ
F and 68 pF capacitors are the filter network for this PLL. Connect to
Pin 10 ground.
12
PLL1 Filt SW
The 12 k
resistor and 470 pF capacitor give the filter a longer time constant when Pin 12 is switched in.
13
16Fh/CSync
Fh Ref
No external components required.
14
No external components required.
15
15 k Return
TTL Return signal from external frequency divider.
16
PLL2 Filter
The 10 k
resistor and 47 nF and 4.7 nF capacitors are the filter network for this PLL. Connect to
Pin 17 ground.
17
Ground
Ground for the Pixel Clock circuit.
18
Clk Out
Pixel Clock output to external frequency divider and triple A/D converter.
19
VCC3
R, G, B Out
5.0 V supply for the Pixel Clock circuit.
20, 21, 22
The 390
pull–up resistors are required for these open–collector outputs. The pull–ups should go to a
clean, well filtered 5.0 V supply. These pins cannot drive 75
directly. If required to do so, see text for
suggested buffer.
23
VCC2
Ground
5.0 V supply for the Color Difference section.
24
Ground for the Color Difference section.
25
Fast Comm
No external components required. This input should notbe left open.
26, 27, 28
B, G, R In
Input signals must be capacitor–coupled. The 220
resistors protect the pins from ESD and RFI.
29
Y2 Input
Input signals must be capacitor–coupled. The 220
resistor protects the pin from ESD and RFI. The
75
resistor is not required by the MC44011, but depends on the signal source.
30, 31
B–Y, R–Y In
Input signals must be capacitor–coupled. The MC44140 is required if PAL signals are processed
(see text).
32
Y1 Clamp
The 0.1
μ
F ceramic capacitor provides clamping for the Y1 output.
33
Y1 Out
No external components required. This pin cannot drive 75
directly. If required to do so, see text for
suggested buffer.
34, 35
System Sel,
Sandcastle
For use by the MC44140 delay line. No other external components required.
36, 38
Xtal 2, Xtal 1
A 17.7 MHz crystal is required (at Pin 38) for PAL signals, and a 14.3 MHz crystal is required (at Pin 36)
for NTSC signals. If only one crystal is required, leave the other pin open. The series capacitor depends
on the crystal manufacturer. (See Table 17 for crystal specs.)
37
N/C
No external components required.
39
Ground
Ground for Color Decoder section.
40
VCC1
B–Y, R–Y
Out
5.0 V supply for the Color Decoder section.
41, 42
The MC44140 is required if PAL signals are processed. Otherwise, capacitor–couple to Pins 30, 31
(see text).
43
Indent Filter
The 0.1
μ
F ceramic capacitor provides filtering for the Identification circuit.
44
4FSC PLL
The 47 k
resistor, and 0.1
μ
F and 2.2 nF capacitors are the filter network for the crystal PLL. Connect to
Pin 39 ground.
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