LF48410
DEVICES INCORPORATED
1024 x 24-bit Video Histogrammer
LF48410
1024 x 24-bit Video Histogrammer
DEVICES INCORPORATED
FEATURES
DESCRIPTION
The LF48410 is capable of generating
histograms and Cumulative Distribu- the Cumulative Distribution Function
tion Functions of video images. It is the desired transformation func-
may also be used as a look up table, a tion, the LF48410 can calculate it and
bin accumulator, a delay memory have it available for Look Up Table
device is in Look Up Table Mode. If
❑ 40 MHz Data Input and Compu-
tation Rate
❑ 1024 x 24-bit Memory Array
❑ Histograms of Images up to 4K x
4K with 10-bit Pixel Resolution
(delay and subtract also possible), or a Mode. When the device is in Delay
single port RAM. The on-chip 1024 x Memory Mode, it functions as a video
❑ Memory Array Flash Clear
❑ User-Programmable Modes:
Histogram, Histogram Accumulate,
Look Up Table, Bin Accumulate,
Delay Memory, Delay and Subtract,
Single Port RAM
24-bit memory array facilitates
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
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
❑ Replaces Harris HSP48410
❑ 84-pin PLCC, J-Lead
Cumulative Distribution Function can device can be configured as a 1024 x
be calculated by putting the device in 24, 1024 x 16, or 1024 x 8-bit RAM. A
Histogram Accumulate Mode.
Transformation functions can be
performed on pixel values when the
Flash Clear function is provided
which sets all memory array locations
and data path registers to “0”.
LF48410 BLOCK DIAGRAM
RAM ARRAY
DATA IN
DATA OUT
24
24
DIO
I/F
ADDRESS
WR
DIO23-0
DIN23-0
ADDER
INPUT
10
CONTROL
IOA9-0
PIN9-0
ADDRESS
GENERATOR
10
CLK
COUNTER
(TO ALL REGISTERS)
WR
RD
UWS
START
FC
CONTROL
3
FCT2-0
LD
FUNCTION
DECODE
MUX CONTROL SIGNALS
Video Imaging Products
08/08/2000–LDS.48410-L
1