HSP48212
Data Sheet
May 1999
File Number 3627.2
Digital Video Mixer
Features
The Intersil HSP48212 is a 68 pin Digital Video Mixer IC
intended for use in multimedia and medical imaging
applications.
• 12-Bit Pixel Data
• Two’s Complement or Unsigned Data
• 12-Bit Mix Factor
The HSP48212 allows the user to mix two video sources
based on a programmable weighting factor. After weighting
the input data signals, the Video Mixer simply adds the two
weighted signals mathematically. This results in the mixed
output, which is a weighted sum of the two sources.
• 13-Bit Signed or Unsigned Three State Output
• Overflow Detection and Output Saturation
• Rounding to 8, 10, 12, or 13-Bits
• Input and Output Pixel Data Synchronous to Clock
The input and output interfaces are synchronous with respect
to the input clock, simplifying the user interface requirements.
• Programmable Pipeline Delay of up to 7 Clock Cycles for
Control of Misaligned Input Data
Input Data (DINA, DINB), Mix Factor (M) and control signals
(RND, TCB) may be delayed relative to each other in order to
compensate for any misalignment that may have occurred
prior to entering the HSP48212. Each input’s delay may be
independently programmed up to seven clock cycles.
• TTL Compatible Inputs/Outputs
• DC to 40MHz Clock Rate
Applications
The output data may be rounded to 8, 10, 12, or 13-bits. The
enabling of data onto the output data bus is under the user’s
control via an output enable signal (OE).
• Video Summing (Frame Addition)
• Video Mixing
• Fade In/Out
Ordering Information
• Video Switching
TEMP.
o
• High Speed Multiplying
PART NUMBER RANGE ( C)
PACKAGE
64 Ld MQFP
68 Ld PLCC
PKG. NO.
Q64.14x14
N68.95
HSP48212VC-40
HSP48212JC-40
0 to 70
0 to 70
Block Diagram
DELAY
0-7
TCB
DELAY
0-7
DELAY
0-7
RND0-1
DINB0-11
2
12
1-M
SHIFT
LEFT
DELAY
0-7
M
DOUT0-12
Σ
12
12
13
DELAY
0-7
DINA0-11
OE
DOUT = 2 x [DINA x M + DINB x (1-M)]
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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