PRODUCT SPECIFICATION
TMC2246A
“X”
“Y”
TMC2302A
SADR
TMC2302A
SADR
7-4
7-4
SADR
TADR
SADR TADR
23-8 11-0
23-8
11-0
Address
Offset
+1
Adders
+1
ADDR
ADDR
ADDR
ADDR
X+1,Y+1
DOUT
Banded
Banded
Source
Image
RAM
Interpolation
Coefficient
ROM
X,Y
X+1,Y
DOUT
X,Y+1
DOUT
DOUT
D1 C1 D2 C2 D3 C3 D4 C4
TMC2246A
TMC2011A
Pipeline
Delay
Register
S
15-0
Interpolated Pixel Data
D
IN
ADDR
OUT
Target
Image
RAM
U,VAddress
D
To Display
Figure 5. Bilinear Interpolation Using the TMC2246A
Longer filters, with more taps, are realized by including an
external adder (such as the common 74381 type) to cascade
multiple TMC2246As. Alternatively, two additional taps and
a cascading adder are available in the Fairchild TMC2249A
Digital Mixer.
TMC2246A Applications in Digital
Filtering
Unrestricted access to all input ports of the TMC2246A
allows the user considerable flexibility in realizing numerous
digital filter architectures. Figure 6 illustrates how the device
may be utilized as a flexible high-speed FIR filter with the
ability to modify all of the filter coefficients dynamically or
to store a fixed set if desired.
12
REV. 1.0.3 9/11/00
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
