LF3304
DEVICES INCORPORATED
Dual Line Buffer/FIFO
LF3304
DEVICES INCORPORATED
Dual Line Buffer/FIFO
DESCRIPTION
The
LF3304
is a dual line buffer/
FIFO, designed to operate at HDTV
rates. The LF3304 will operate in
two distinct modes: Line Buffer and
FIFO. In these modes the two memo-
ries can operate independently or
with common control.
The LF3304 comprises two 12-bit 4K
memories configurable in a variety of
ways including: Two 12-bit 4K deep
line buffers (independent lengths),
Three 8-bit 4K deep line buffers
(common lengths), One 12-bit 8K
deep line buffer, or Two 12-bit 4K
FIFOs (independent operation).
In FIFO mode, independent Read
and Write Resets give the designer
control over the internal pointers
providing flexibility not commonly
found in ordinary FIFOs.
The LF3304 operatates at a maximum
data rate of 100 MHz and is available
in a 100-lead PQFP package.
FEATURES
u
100 MHz Data Rate for Video and
other High-Speed Applications
u
One 24-bit, Two 12-bit, Three
8-bit Data Paths, or One Double
Depth 12-bit
u
Dual Modes: Line Buffer or FIFO
u
User-Programmable FIFO Flags
u
User-Resettable Read and Write
Pointers
u
Single 3.3 V Power Supply,
5 V Tolerant I/O
u
100-lead PQFP
LF3304 B
LOCK
D
IAGRAM
WCLKA
RCLKA
WENA
RENA
RRA
RWA
RAM ARRAY 1
CONTROL
FLAG
GENERATOR
FFA
EFA
PAFA
PAEA
OEA
12
AIN
11-0
VARIABLE LENGTH RAM ARRAY A
4K x 12-bit
12
AOUT
11-0
ADDRA
LDA
12
LENGTH
11-0
ADDRB
LDB
MASTER
CONTROL
VARIABLE LENGTH RAM ARRAY B
12
BIN
11-0
12
BOUT
11-0
4K x 12-bit
OEB
2
MODE
1-0
WCLKB
RCLKB
WENB
RENB
RRB
RWB
RAM ARRAY 2
CONTROL
FLAG
GENERATOR
FFB
EFB
PAFB
PAEB
Video Imaging Products
1
08/16/2000–LDS.3304-F
LOGIC [ LOGIC DEVICES INCORPORATED ]
