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TMC2249AH6C2 Datasheet(PDF) 3 Page - Fairchild Semiconductor

Part # TMC2249AH6C2
Description  Digital Mixer 12 x 12 Bit, 60 MHz
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

TMC2249AH6C2 Datasheet(HTML) 3 Page - Fairchild Semiconductor

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TMC2249A
PRODUCT SPECIFICATION
REV. 1.0.2 7/6/00
3
Functional Description
The TMC2249A performs the summation of products
described by the formula:
S(N+5) =A(N-ADEL)
× B(N-BDEL) × (-1NEG1(N)) +
C(N-CDEL)
× D(N-DDEL) × (-1NEG2(N)) +
CAS(N+3
× FT)
where ADEL through DDEL range from 1 to 16 pipe delays.
All inputs and controls utilize pipeline delay registers to
maintain synchronicity with the data input during that clock,
except when the Cascade data input is routed directly to the
accumulator by use of the Feedthrough control. One-half
LSB rounding to 16 bits may be performed on the sum of
products while summing with the cascade input data.
The user may access either the upper or lower 16 bits of the
24-bit accumulator by swapping overlapping registers. The
output bus has an asynchronous high-impedance enable, to
simplify interfacing to complex systems.
Pin Assignments
120 Pin Metric Quad Flat Pack, KE Package
CLK
ACC
NEG1
NEG2
RND
S15
S14
GND
S13
S12
S11
VDD
S10
S9
S8
GND
S7
S8
S5
VDD
S4
S3
S2
GND
S1
S0
OE
SWAP
BDEL0
BDEL1
1
30
120
91
31
60
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
90
61
BDEL2
BDEL3
ENB
B0
B1
B2
B3
B4
B5
B6
B7
GND
B8
B9
B10
VDD
B11
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
ENA
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
Pin
Name
Pin
Name
ADEL3
ADEL2
ADEL1
ADEL0
NC
CAS15
CAS14
CAS13
CAS12
CAS11
CAS10
GND
CAS9
CAS8
CAS7
CAS6
CAS5
CAS4
CAS3
CAS2
CAS1
CAS0
CASEN
FT
CDEL0
CDEL1
CDEL2
CDEL3
ENC
C0
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
VDD
D11
D10
D9
GND
D8
D7
D6
D5
D4
D3
D2
D1
D0
END
DDEL3
DDEL2
DDEL1
DDEL0
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
Pin
Name
Pin
Name


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