FS450, FS451
PRELIMINARY PRODUCT DESCRIPTION
JUNE, 2000, VERSION 1.2
14
COPYRIGHT
©
© 1999, 2000 FOCUS ENHANCEMENTS, INC.
PRELIMINARY INFORM ATION
Pin
Name
Pin
Number
Type/Value
Pin Function Description
Video Outputs
Y/Red
12
analog video
Video output. As programmed by Command Register
OFMT bit:
0 Luminance component Y of S-video.
1 Red component of RGB.
CVBS/Green
15
analog video
Video output. As programmed by Command Register OFMT
bit:
0 Composite video.
1 Green component of RGB.
C/Blue
17
analog video
Video output. As programmed by Command Register OFMT
bit:
0 Chrominance component of S-video.
1 Blue component of RGB.
CSYNC
19
LVTTL output
Composite sync output. Active high digital composite sync
for SCART video outputs.
Voltage Reference
VREF
8
+1.276 V
Voltage reference input/output. If unconnected, except for
a 0.1µF capacitor to ground for noise decoupling, the internal
1.276 Volt band-gap reference will be supplied to the three
D/A Converters. An external 1.276 Volt reference connected
to the VREF pin, will override the internal voltage reference.
RREF
9
390/780
Ω
Reference resistor. Connected between RREF and ground,
this resistor sets the current range of the D/A converters.
Use 390
Ω for a 37.5Ω load and 780Ω for a 75Ω load.
CBYPASS
11
0.1
µF
Bypass Capacitor. A 0.1µF capacitor must be connected
between CBYPR and VDDDA to reduce noise at the D/A
outputs.
CCIR 656 Input Port
V656_IN7-0
99,98,97,9
6,94,93,92
,91
TTL input
(pull down)
Digital CCIR 656 port input. 8 bits wide. Y, Cr, Cb
multiplexed digital input port
HBNK_IN
89
TTL input
(pull down)
Digital TV Horizontal Blank input. Horizontal Blank for use
with the V656_IN ports.
VBNK_IN
88
TTL input
(pull down)
Digital TV Vertical Blank input. Vertical Blank for use with
the V656_IN ports.
FIELD_IN
87
TTL input
(pull down)
Digital TV Field input. Field bit for use with the V656_IN
ports.
Italian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
