tmc2246a Fairchild Semiconductor, tmc2246a Datasheet - Page 11
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tmc2246a
Manufacturer Part Number
tmc2246a
Description
Image Filter 11 X 10 Bit, 60 Mhz
Manufacturer
Fairchild Semiconductor
Datasheet
1.TMC2246A.pdf
(18 pages)
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TMC2246A
Table 2. Typical TMC2246A Operation Sequence
Notice in this example, operating in fractional two’s complement mode, that rounding is imposed on the first cycle only of an
accumulation. This avoids the propagation of accumulated roundoff errors.
REV. 1.0.3 9/11/00
CLK
0
1
2
3
4
5
6
7
8
D1(1) C1(1)
D1(2)
D1(3) C1(3)
D1(4) C1(4)
D1
-
C1
X
-
ENB1
0
1
0
0
-
D2(1) C2(1)
D2(2) C2(2)
D2(3) C2(3)
D2(4) C2(4)
D2
-
C2
-
ENB2
0
1
0
0
-
D3(1) C3(1)
D3(2)
D3(3)
D3(4) C3(4)
D3
-
C3
X
X
-
ENB3
0
1
1
0
-
D4(2)
D4(3)
D4(1) C4(1)
D4(4) C4(4)
D4
-
C4
X
X
-
ENB4 ACC
0
1
1
0
-
0
1
1
0
-
S(6)=S(5)+D1(2)C1(1)+D2(2)C2(1)
S(7)=S(6)+D1(3)C1(3)+D2(3)C2(3)
+D3(4)C3(4)+D4(4)C4(4)+2 -10
+D3(1)C3(1)+D4(1)C4(1)+ 2
S(5)=D1(1)C1(1)+D2(1)C2(1)
S(8)=D1(4)C1(4)+D2(4)C2(4)
+D3(2)C3(1)+D4(2)C4(1)
+D3(3)C3(1)+D4(3)C4(1)
PRODUCT SPECIFICATION
Sum
-
-
-
-10
11