LF48410
DEVICES INCORPORATED
1024 x 24-bit Video Histogrammer
LF48410
DEVICES INCORPORATED
1024 x 24-bit Video Histogrammer
DESCRIPTION
The
LF48410
is capable of generating
histograms and Cumulative Distribu-
tion Functions of video images. It
may also be used as a look up table, a
bin accumulator, a delay memory
(delay and subtract also possible), or a
single port RAM. The on-chip 1024 x
24-bit memory array facilitates
histograms of images up to 4K x 4K
pixels with a 10-bit pixel resolution.
Once the histogram of a video image
is stored in the memory array, the
Cumulative Distribution Function can
be calculated by putting the device in
Histogram Accumulate Mode.
Transformation functions can be
performed on pixel values when the
device is in Look Up Table Mode. If
the Cumulative Distribution Function
is the desired transformation func-
tion, the LF48410 can calculate it and
have it available for Look Up Table
Mode. When the device is in Delay
Memory Mode, it functions as a video
row buffer. In this mode, the LF48410
can buffer video lines as long as 1029
pixels. The device can also function
as an asynchronous single port RAM.
During asynchronous modes, the
device can be configured as a 1024 x
24, 1024 x 16, or 1024 x 8-bit RAM. A
Flash Clear function is provided
which sets all memory array locations
and data path registers to “0”.
FEATURES
u
40 MHz Data Input and Compu-
tation Rate
u
1024 x 24-bit Memory Array
u
Histograms of Images up to 4K x
4K with 10-bit Pixel Resolution
u
Memory Array Flash Clear
u
User-Programmable Modes:
Histogram, Histogram Accumulate,
Look Up Table, Bin Accumulate,
Delay Memory, Delay and Subtract,
Single Port RAM
u
Replaces Harris HSP48410
u
84-pin PLCC, J-Lead
LF48410 B
LOCK
D
IAGRAM
RAM ARRAY
DATA IN
24
DIN
23-0
3
DATA OUT
ADDRESS
WR
ADDER
INPUT
CONTROL
DIO
I/F
24
DIO
23-0
10
IOA
9-0
10
PIN
9-0
ADDRESS
GENERATOR
CLK
(TO ALL REGISTERS)
WR
RD
UWS
START
FC
COUNTER
CONTROL
3
FCT
2-0
LD
FUNCTION
DECODE
MUX CONTROL SIGNALS
Video Imaging Products
1
08/08/2000–LDS.48410-L
LOGIC [ LOGIC DEVICES INCORPORATED ]
