FS401LF ETC2 [List of Unclassifed Manufacturers], FS401LF Datasheet - Page 12

• Manufacturer Part Number: FS401LF
• Description: PC to TV Video Scan Converters
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

FS401, FS403
3. Pin Descriptions
Clocks
OSC1
OSC1BUF
OSC2
OSC2BUF
HS_IN
VS_IN
Global Controls
INTCPUEN
FLP_RST
403 only
RESET
A/D Converter Interface
R_IN, G_IN,
B_IN
V
V
VGACLKIN
EXTVGASEL\ 52/66
JANUARY 24, 2007
ADCREF
TOUT
Pin Name
2/1
3/2
4/3
5/4
50/63
59/77
x/35
36/45, 39/48,
44/53
42/51
41/50
53/67
49/62
30/37
Pin Number
FS401/FS403
TTL input
TTL input
LVTTL
output
TTL input
LVTTL
output
TTL input
TTL input
TTL input
TTL input
700 or 1000
mV
700 or 1000
mV
700 or 1000
mV
TTL input
TTL input
Type/Value
Oscillator Number 1. Default clock input to the encoder.
Input from an external oscillator; or one pin of a crystal
connected between OSC1 and OSC1BUF. NTSC
subcarrier frequency can be derived from this 4f
OSC1 must be connected (see Table 4. Clock
Connections).
Oscillator 1 Buffer. If a crystal is used, one pin is
connected to OSC1, the other to OSC1BUF. Float this pin if
OSC1 is connected to an oscillator.
Oscillator Number 2. Input from an external oscillator; or
one pin of a crystal connected between OSC2 and
OSC2BUF. PAL subcarrier frequency can be derived from
this 4f
Oscillator 2 Buffer. If a crystal is used, one pin is
connected to OSC2, the other to OSC2BUF. Float this pin if
unused.
VGA Horizontal Sync Input. Active HIGH or active LOW
polarity is sensed.
VGA Vertical Sync Input. Active HIGH or active LOW
polarity is sensed.
Internal CPU enable. INTCPUEN enables the internal
CPU when high.
Field, Line and Pixel Reset. Resets video encoder engine
to the start location on the outgoing frame. Used for
genlock. Active high.
Reset. Resets internal state machines and initializes
default register values. Active high.
Analog red, blue and green inputs. AC coupled RGB
video input signals. Nominal voltage range is 0.7 or 1.0 Volt
peak-to-peak (selectable). Inputs are clamped to ground
when HS_IN is active.
A/D Converter Top Reference Voltage Input. Input to
voltage follower that supplies current to A/D converter
reference resistors. Range is 0.5 - 2.0 volts.
A/D Converter Top Reference Voltage Output. Output of
the internal V
reference resistor ladder. If an external A/D voltage is
used, it must be capable of driving the 100 Ω load of the
ladder. If the internal reference is used, it must be
connected to an external 0.1 µF de-coupling capacitor.
A/D VGA converter clock input. Analog-to-digital
converter external clock input if EXTVGASEL\ = L.
A/D VGA clock select. Selects the A/D clock source:
EXTVGASEL\ = H: internal phase-locked loop;
EXTVGASEL\ = L: external clock applied to VGACLKIN.
12
SC
clock. Ground if unused.
T
buffer and direct connection to the A/D
COPYRIGHT © 1999 FOCUS ENHANCEMENTS, INC.
Pin Function Description
PRODUCT SPECIFICATION
SC
REV. NO. 1.7
clock.