lf3311 LOGIC Devices Incorporated, lf3311 Datasheet - Page 17

• Manufacturer Part Number: lf3311
• Description: Horizontal / Vertical Digital Image Filter
• Manufacturer: LOGIC Devices Incorporated

DEVICES INCORPORATED
Clock
Inputs
LOGIC Devices Incorporated
Power
Signal Definitions
Vcc and GND
+3.3 V power supply. All pins must be connected.
CLK — Master Clock
The rising edge of CLK strobes all enabled registers.
DIN
DIN
to Filter B. Data is latched on the rising edge of clock.
HCF11-0 — Horizontal Coefficient Input
HCF11-0 is used to load data into the horizontal coefficient banks and the Configuration/Control Registers.
Data present on HCF11-0 is latched into the Horizontal LF Interface
is LOW (see the LF Interface
HCA7-0 — Horizontal Coefficient Address
HCA7-0 determines which row of data in the horizontal coefficient banks is fed to the multipliers in the
horizontal filter. HCA7-0 is latched into the Horizontal Coefficient Address Register on the rising edge of
CLK when HCEN is LOW.
VCF11-0 — Vertical Coefficient Input
VCF11-0 is used to load data into the vertical coefficient banks and the Configuration/Control Registers.
Data present on VCF11-0 is latched into the Vertical LF Interface
LOW (see the LF Interface
VCA7-0 — Vertical Coefficient Address
VCA7-0 determines which row of data in the vertical coefficient banks is fed to the multipliers in the vertical
filter. VCA7-0 is latched into the Vertical Coefficient Address Register on the rising edge of CLK when
VCEN is LOW.
11-0
11-0
Figure 16. Input Formats
Figure 17. Accumulator Output Formats
— Data Input
is the 12-bit data input port to Filter A. In Dual Filter Mode, DIN
(Sign)
(Sign)
2
11 10 9
2
31 30 29
11
20
Accumulator Output
2
2
10
19
Input Data
TM
2
2
18
9
TM
section for a full discussion).
section for a full discussion).
2
2
2
2
2
9
2
2
17
1
1
10
1
2
2
0
0
11
0
Horizontal / Vertical Digital Image Filter
(Sign)
11 10 9
2
0
TM
2
Coefficient Data
on the rising edge of CLK when VLD is
1
TM
2
on the rising edge of CLK when HLD
11-0
2
Improved Performance
can also be the 12-bit input port
Video Imaging Products
2
2
9
2
1
10
2
0
11
9/19/05 LDS.3311-C
LF3311