lf3311 LOGIC Devices Incorporated, lf3311 Datasheet - Page 14

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

DEVICES INCORPORATED
LF Interface ™
Continued
LOGIC Devices Incorporated
Functional Description
The coefficient banks and Configuration/Control Registers are not loaded with data until all data values for
the specified address are loaded into the LF InterfaceTM. In other words, the coefficient banks are not
written to until all eight coefficients have been loaded into the LF InterfaceTM. A round register is not
written to until all four data values are loaded. After the last data value is loaded, the interface will expect
a new address value on the next clock cycle. After the next address value is loaded, data loading will
begin again as previously discussed. As long as data is loaded into the interface, HLD must remain
LOW. After all desired coefficient banks and Configuration/Control Registers are loaded with data, the
LF InterfaceTM must be disabled. This is done by setting HLD HIGH on the clock cycle after the clock
cycle which latches the last data value. It is important that the LF InterfaceTM remain disabled when
not loading data into it.
Table 15. Coefficient Bank Loading Format
Table 16. Configuration Register Loading Format
Table 17. Round Register Loading Format
Table 18. Select Register Loading Format
Table 19. Limit Register Loading Format
1st Word - Address
2nd Word - Bank 0
3rd Word - Bank 1
4th Word - Bank 2
5th Word - Bank 3
6th Word - Bank 4
7th Word - Bank 5
8th Word - Bank 6
9th Word - Bank 7
1st Word - Address
2nd Word - Data
1st Word - Address
2nd Word - Data
3rd Word - Data
4th Word - Data
5th Word - Data
1st Word - Address
2nd Word - Data
1st Word - Address
2nd Word - Data
3rd Word - Data
*
**
This bit represents the MSB of the Lower Limit.
This bit represents the MSB of the Upper Limit.
H/VCF11 H/VCF10 H/VCF9 H/VCF8 H/VCF7 H/VCF6 H/VCF5 H/VCF4 H/VCF3 H/VCF2 H/VCF1 H/VCF0
H/VCF11 H/VCF10 H/VCF9 H/VCF8 H/VCF7 H/VCF6 H/VCF5 H/VCF4 H/VCF3 H/VCF2 H/VCF1 H/VCF0
CFA/B11 CFA/B10 CFA/B 9 CFA/B 8 CFA/B 7 CFA/B 6 CFA/B 5 CFA/B 4 CFA/B 3 CFA/B 2 CFA/B 1 CFA/B 0
CFA/B11 CFA/B10 CFA/B 9 CFA/B 8 CFA/B 7 CFA/B 6 CFA/B 5 CFA/B 4 CFA/B 3 CFA/B 2 CFA/B 1 CFA/B 0
CFA/B11 CFA/B10 CFA/B 9 CFA/B 8 CFA/B 7 CFA/B 6 CFA/B 5 CFA/B 4 CFA/B 3 CFA/B 2 CFA/B 1 CFA/B 0
0
0
0
1
1
0
1
1
0
0
0
1
R
R
R
R
0
0
1
0*
0**
0
0
0
1
1
0
1
0
1
0
0
0
R
R
R
R
1
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
0
R
R
R
R
1
1
1
14
0
0
0
0
0
0
0
1
1
0
1
0
1
1
R
R
R
R
0
1
1
1
0 **
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
1
0
Horizontal / Vertical Digital Image Filter
0
0
1
0
0
0
1
1
1
0
0
0
0
1
1
1
0
0
0
0
1
1
0
0
0
1
1
0
1
1
0
0
0
0
1
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
1
0
0
1
1
0
0
0
0
1
1
0
0
Improved Performance
Video Imaging Products
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
0
1
0
0
0
0
0
1
0
1
0
1
0
1
1
0
0
9/19/05 LDS.3311-C
1
0
0
1
0
1
1
1
1
0
1
1
1
1
0
1
0
1
1
0
1
LF3311
0
0
1
0
1
1
0
0
1
0
1
0
0
0
1
0
0
1
1
0
1