LF2249 LODEV [LOGIC Devices Incorporated], LF2249 Datasheet - Page 2

• Manufacturer Part Number: LF2249
• Description: 12 x 12-bit Digital Mixer
• Manufacturer: LODEV [LOGIC Devices Incorporated]

DEVICES INCORPORATED
synchronous operation between the
incoming data and all available
control functions. The LF2249 oper-
ates at a clock rate of 40 MHz over the
full commercial temperature and
supply voltage ranges.
Because of its flexibility, the LF2249 is
ideally suited for applications such as
image switching and mixing, digital
quadrature mixing and modulating,
FIR filtering, and arithmetic function
and waveform synthesis.
SIGNAL DEFINITIONS
Power
V
+5 V power supply. All pins must be
connected.
Clock
CLK — Master Clock
The rising edge of CLK strobes all en-
abled registers. All timing specifica-
tions are referenced to the rising edge of
CLK.
Inputs
A
A
ters. Data is latched into the input reg-
isters on the rising edge of CLK. The
contents of the input registers are
clocked into the top of the correspond-
ing 16-stage pipeline delay (pushing the
contents of the register stack down one
register position) on the next clock cycle
if the pipeline register stack is enabled.
The LSBs are A
CAS
CAS
port. Data is latched into the register on
the rising edge of CLK. The LSB is CAS
(Figure 1a).
CC
11-0
11-0
and GND
15-0
15-0
–D
–D
11-0
11-0
— Cascade Data Input
is the 16-bit cascade data input
— Data Inputs
are 12-bit data input regis-
0
-D
0
(Figure 1a).
0
D
F
F
IGURE
IGURE
ETAILED
–2
–2
(Sign)
(Sign)
2
15 14 13
15 14 13
15 14 13
CLK
15
23
23
1
1
2
A
B
2
2
V
14
. I
22
. O
22
IEW OF
–2
(Sign)
11
2
2
2
13
NPUT
21
21
11
ADEL
UTPUT
2
2
12 11
2
10 9
2
2
12 11
12 11
12
10
20
20
B
F
3-0
4
2
LOCK
2
2
2
ORMATS
11
Sum Output (Lower 16 bits)
Sum Output (Upper 16 bits)
19
19
F
9
ORMATS
2
10 9
2
2
10 9
10 9
2
8
10
D
18
18
8
IAGRAM
Cascade Input
2
2
2
2
7
Data Input
17
17
9
7
16 : 1
2
2
2
2
8
6
8
8
16
16
8
6
O
2
2
2
12
2
7
5
7
7
UTLINED
15
15
7
A
5
R
R
R
Video Imaging Products
11-0
12 x 12-bit Digital Mixer
16
1
2
2
2
2
2
6
4
6
6
12
14
14
6
4
2
2
2
2
5
5
5
3
13
13
5
A
3
REA
2
2
2
2
4
4
4
2
12
12
4
2
2
2
2
3
2
3
3
1
11
11
3
1
2
2
2
2
2
2
2
0
10
10
2
0
ENA
08/16/2000–LDS.2249-J
2
2
2
1
1
1
1
9
9
LF2249
2
2
2
0
0
0
0
8
8