AL422B
3M-Bit Frame Buffer
Applications
Multimedia systems
Video capture systems
Video editing systems
Scan rate converters
TV’s picture in picture feature
Anti-skip CD players
Features
•
384K (393,216) x 8 bits FIFO organization
•
Supports VGA and CCIR resolutions
•
Independent read/write operations (different
I/O data rates acceptable)
•
High speed independent 8-bit data I/O port
operations
•
Maximum operating speed grade: 50Mhz
•
Access time: 15 ns
•
Output enable control (data skipping)
•
3.3V power supply with 5V signal input
tolerant
•
Standard 28-pin SOP package
Description
The AL422B is a First-In-First-Output
(FIFO) video frame memory used to buffer
audio/video/graphic
data
for
digital
processing, timing correction, or format
conversion. It is manufactured with state-of-
the-art embedded memory technology for
applications in TVs, VCRs, scan converters,
and digital video systems.
Ordering Information
Part number
AL422B
Package
28-pin plastic SOP
Power supply
+3.3 volt
DO0 DO1 DO2 DO3
/RE GND /OE /RRST RCK DEC DO4 DO5 DO6 DO7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
AL422B
2
3
4
5
7
8
9
10
12
13
14
1
6
11
DI0
DI1
DI2
DI3
/WE GND TST /WRST WCK VDD
DI4
DI5
DI6
DI7
AL422-04 422B pinout diagram
AVERLOGIC [ AVERLOGIC TECHNOLOGIES INC ]
