lf3320 LOGIC Devices Incorporated, lf3320 Datasheet - Page 3

• Manufacturer Part Number: lf3320
• Description: Horizontal Digital Image Filter
• Manufacturer: LOGIC Devices Incorporated

DEVICES INCORPORATED
SIGNAL DEFINITIONS
Power
V
+3.3 V power supply. All pins must
be connected.
Clock
CLK — Master Clock
The rising edge of CLK strobes all
enabled registers.
Inputs
DIN
DIN
Filter A. In Dual Filter Mode, DIN
can also be the 12-bit input port to
Filter B. Data is latched on the rising
edge of CLK.
RIN
In Single Filter Mode, RIN
12-bit reverse cascade input port. This
port is connected to ROUT
another LF3320. In Dual Filter Mode,
RIN
Filter B. Data is latched on the rising
edge of CLK.
CFA
CFA
the Filter A coefficient banks (banks
0 through 7) and the configuration/
control registers. Data present on
CFA
Interface
when LDA is LOW (see the LF Inter-
face
CAA
CAA
in coefficient banks 0 through 7 is fed
to the multipliers. CAA
into Coefficient Address Register A on
the rising edge of CLK when CENA is
LOW.
CC
11-0
TM
11-0
11-0
11-0
11-0
and GND
11-0
11-0
7-0
7-0
section for a full discussion).
— Coefficient Address A
— Reverse Cascade Input
can be the 12-bit input port to
determines which row of data
— Data Input
is the 12-bit data input port to
— Coefficient A Input
is used to load data into
is latched into the Filter A LF
TM
on the rising edge of CLK
7-0
11-0
11-0
is latched
is the
of
11-0
CFB
CFB
the Filter B coefficient banks (banks
8 through 15) and the configuration/
control registers. Data present on
CFB
Interface
when LDB is LOW (see the LF Inter-
face
CAB
CAB
in coefficient banks 8 through 15 is fed
to the multipliers. CAB
into Coefficient Address Register B on
the rising edge of CLK when CENB is
SLCT
F
F
T
00000
00001
00010
01110
01111
10000
IGURE
IGURE
ABLE
(Sign)
(Sign)
TM
11-0
11-0
11-0
–2
–2
7-0
·
·
·
7-0
11 10 9
31 30 29
Accumulator A Output
section for a full discussion).
4-0
11
20
— Coefficient Address B
determines which row of data
— Coefficient B Input
is used to load data into
is latched into the Filter B LF
TM
1. O
2
2
2. I
3. A
10
19
on the rising edge of CLK
S
F
F
F
F
F
F
Input Data
2
2
·
·
·
15
15
16
17
29
30
31
18
9
NPUT
UTPUT
CCUMULATOR
S
F
F
F
F
F
F
2-3
·
·
·
14
14
15
16
28
29
30
F
2
2
2
2
S
F
F
F
F
F
F
ORMATS
–9
F
2
7-0
·
·
·
13
14
15
27
28
29
13
ORMATS
2
2
is latched
1
1
–10
1
2
2
O
0
0
–11
· · ·
· · ·
· · ·
· · ·
· · ·
· · ·
· · ·
0
UTPUT
Horizontal Digital Image Filter
F
LOW.
Outputs
DOUT
DOUT
output port for the overall filter (Single
Filter Mode) or Filter A (Dual Filter
Mode).
COUT
In Single Filter Mode, COUT
12-bit registered cascade output port.
COUT
DIN
Filter Mode, COUT
F
F
F
F
S
F
F
ORMATS
·
·
·
10
22
23
24
8
8
9
Video Imaging Products
(Sign)
(Sign)
11-0
–2
–2
F
F
F
11 10 9
31 30 29
S
F
F
F
·
·
·
11-0
11-0
15-0
15-0
Accumulator B Output
21
22
23
7
8
9
7
20
0
of another LF3320. In Dual
2
2
— Cascade Output
Coefficient Data
should be connected to
— Data Output
is the 16-bit registered data
–1
19
2
2
· · ·
· · ·
· · ·
· · ·
· · ·
· · ·
· · ·
–2
18
11-0
2
2
F
F
F
2
2
S
F
F
F
is a 12-bit
6/22/2007–LDS.3320-R
–9
–9
·
·
·
16
17
18
2
3
4
2
2
2
1
1
–10
–10
LF3320
F
F
F
S
F
F
F
11-0
·
·
·
15
16
17
1
2
3
1
2
2
0
0
–11
–11
is a
F
F
F
S
F
F
F
·
·
·
14
15
16
0
0
1
2