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Número de pieza | LF48212QC20 | |
Descripción | 12 x 12-bit Alpha Mixer | |
Fabricantes | LOGIC Devices Incorporated | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de LF48212QC20 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
No Preview Available ! DEVICES INCORPORATED
DEVICES INCORPORATED
LF48212
12 x 12L-bFit A4lp8h2a 1Mi2xer
12 x 12-bit Alpha Mixer
FEATURES
u 50 MHz Data and Computation
Rate
u Two’s Complement or Unsigned
Operands
u On-board Programmable Delay
Stages
u Programmable Output Rounding
u Replaces Harris HSP48212
u Package Styles Available:
• 68-pin PLCC, J-Lead
• 64-pin PQFP
LF48212 BLOCK DIAGRAM
DESCRIPTION
The LF48212 is a high-speed video
alpha mixer capable of mixing video
signals at real-time video rates. It
takes two 12-bit video signals and
mixes them together using an alpha
mix factor. Alpha determines the
weighting that each video signal
receives during the mix operation.
The input video data can be in either
unsigned or two’s complement
format, but both inputs must be in the
same format. Independently con-
trolled programmable delay stages are
provided for the input and control
signals to allow for allignment of
input data if necessary. The delay
stages can be programmed to have
from 0 to 7 delays. The 13-bit output
of the alpha mixer is registered with
three-state drivers and may be
rounded to 8, 10, 12, or 13-bits.
α11-0
12
DINA11-0
12
DINB11-0
12
BYPASS
DEL
DELAY CONTROL
REGISTER
15
LD
0-7 0-7 0-7
FORMAT
FORMAT
CLK
MIXEN
OE
1.0 – α
α
TC
2
RND1-0
NOTE: NUMBERS IN REGISTERS INDICATE
NUMBER OF PIPELINE DELAYS.
1
ADJUST
FORMAT
13
DOUT12-0
Video Imaging Products
08/16/2000–LDS.48212-F
1 page DEVICES INCORPORATED
SWITCHING CHARACTERISTICS
COMMERCIAL OPERATING RANGE (0°C to +70°C) Notes 9, 10 (ns)
Symbol Parameter
tCYC Cycle Time
tPW Clock Pulse Width
tS Input Setup Time
tH Input Hold Time
tD Output Delay
tENA Three-State Output Enable Delay (Note 11)
tDIS Three-State Output Disable Delay (Note 11)
SWITCHING WAVEFORMS: DATA I/O
CLK
DINA11-0
DINB11-0
α11-0
CONTROLS*
tCYC
tPW tPW
tS tH
tS tH
tS tH
OE
DOUT12-0
*includes MIXEN, TC, and RND1-0.
tD
tDIS
LF48212
12 x 12-bit Alpha Mixer
LF48212–
25 20
Min Max Min Max
25 20
10 10
11 11
00
14 14
13 13
13 13
HIGH IMPEDANCE
tENA
Video Imaging Products
5 08/16/2000–LDS.48212-F
5 Page |
Páginas | Total 9 Páginas | |
PDF Descargar | [ Datasheet LF48212QC20.PDF ] |
Número de pieza | Descripción | Fabricantes |
LF48212QC20 | 12 x 12-bit Alpha Mixer | LOGIC Devices Incorporated |
LF48212QC25 | 12 x 12-bit Alpha Mixer | LOGIC Devices Incorporated |
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