PRODUCT SPECIFICATION
TMC2246A
“X”
“Y”
TMC2302A
SADR7-4
SADR23-8
TADR11-0
TMC2302A
SADR7-4
SADR23-8 TADR11-0
+1
+1
Address
Offset
Adders
Banded
Source
Image
RAM
ADDR
X,Y
DOUT
ADDR
X+1,Y
DOUT
ADDR
X,Y+1
DOUT
ADDR
X+1,Y+1
DOUT
Banded
Interpolation
Coefficient
ROM
D1
C1
D2
C2
D3
C3
D4
C4
TMC2011A
Pipeline
Delay
Register
TMC2246A
S15-0
Interpolated Pixel Data
D IN
Target
Image
RAM
U,VAddress
ADDR
D OUT
To Display
Figure 5. Bilinear Interpolation Using the TMC2246A
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.
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.
12
REV. 1.0.3 9/11/00
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
