AVERLOGIC AL4V93

AL4V93/95
16K, 64K-Bit Line FIFO
Applications
Multimedia System
Video line capture
TBC(Time Base Corrector)
Hard Disk cache memory
Anti-skip audio data buffer
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Description
High performance, low-power, FIFO(FirstIn First-Out) memory
2K x9 bit I/O port (AL4V93)
8K x9 bit I/O port (AL4V95)
High clock speed (100MHz)
Fully independent read/write access
Output enable control (data skipping)
3.3V±10% power supply with 5V tolerant
Standard 32-pin TQFP
Ordering Information
+3.3V±10%
17
Power Supply
18
32-pin plastic TQFP and PLCC
25
16
26
15
27
AVERLOGIC
14
28
AL4V9x
x-xx-xx
xxxx
xxxx
13
29
30
31
12
11
10
32
TQFP PACKAGE TOP VIEW
8
7
5
4
3
2
9
1
AL4V93, AL4V95
Package
19
20
Part number
21
22
23
24
The AL4V93/95 series memory products are
high-performance,
low-power
9-bit
read/write FIFO (First-In-First-Out) memory
chips. They are specially designed to buffer
high speed streaming data for a wide range
of data buffering applications, such as
optical disk data caching, video line data
buffering.
6
-
Features
/OE
Input data bus
WCLK
/WEN
/WRST
Input
Buffer
(2k, 8k) x9
Memory
Array
Output
Buffer
Write
Control
Logic
Write Pointer
Output data bus
Read
Control
Logic
Read Pointer
Offset
Regissers
RCLK
/REN
/RRST
Timing & Logic
Control
AL4V9x FIFO Block Diagram
The 9-bit input and output ports operate
independently at a maximum speed of
100MHz. The built-in address decoder and
pointer managing circuits provide a
straightforward bus interface to serially
read/write memory that reduces inter-chip
design efforts. The AL4V9x embedded
memory array and high performance process
technologies with extended controller
functions (read skip, fixed and programmable
status flags... etc.) offer flexible memory
management.
The input data is synchronous with a freerunning clock (WCLK), and input-enable pins
(/WEN). Data is written into the FIFO on
every clock when enable pins are asserted.
The output is synchronous with the other freerunning clock (RCLK) and enables (/REN).
An Output Enable pin (/OE) is provided at the
read port for tri-state control of the output port.
DISTRIBUTED BY:
The AL4V9x series are operating in 3.3V
power supply with 5V signal tolerant input.
These chips are available as a 32-pin TQFP
Package.
AVERLOGIC TECHNOLOGIES, INC. TEL: 1 408 361-0400
e-mail: sales_usa@averlogic.com URL: www.averlogic.com
AVERLOGIC TECHNOLOGIES, CORP. TEL: 886 2-87523988 e-mail: sales@averlogic.com.tw URL: www.averlogic.com.tw
October 30, 2004