LF3310QC15 LODEV [LOGIC Devices Incorporated], LF3310QC15 Datasheet - Page 15

• Manufacturer Part Number: LF3310QC15
• Description: Horizontal / Vertical Digital Image Filter
• Manufacturer: LODEV [LOGIC Devices Incorporated]

DEVICES INCORPORATED
It takes 9S clock cycles to load S
coefficient sets into the device.
Therefore, it takes 2304 clock cycles to
load all 256 coefficient sets. Assuming
an 83 MHz clock rate, all 256 coeffi-
cient sets can be updated in 28.8 µs,
which is well within vertical blanking
time. It takes 5S or 3S clock cycles to
load S round or limit registers respec-
tively. Therefore, it takes 256 clock
cycles to update all round and limit
registers (both horizontal and verti-
cal). Assuming an 83 MHz clock rate,
R = Reserved. Must be set to “0”.
* This bit represents the LSB of the Round Register.
** This bit represents the MSB of the Round Register.
1st Word - Address
2nd Word - Data
1st Word - Address
2nd Word - Data
3rd Word - Data
4th Word - Data
5th Word - Data
T
T
ABLE
ABLE
16. C
17. R
ONFIGURATION
OUND
H/VCF
H/VCF
R
R
R
R
R
0
0
1
EGISTER
11
11
H/VCF
H/VCF
R
R
R
R
R
0
0
0
EGISTER
L
10
10
OADING
H/VCF
H/VCF
all horizontal and vertical Round/
Limit registers can be updated in
3.08 µs.
The coefficient banks and Configura-
tion/Control Registers are not loaded
with data until all data values for the
specified address are loaded into the
LF Interface
coefficient banks are not written to
until all eight coefficients have been
loaded into the LF Interface
round register is not written to until
R
R
R
R
1
0
0
L
F
9
9
OADING
ORMAT
H/VCF
H/VCF
R
R
R
R
0
0
0
TM
8
8
F
. In other words, the
H/VCF
H/VCF
ORMAT
0**
0
0
0
1
1
1
15
7
7
Horizontal / Vertical Digital Image Filter
H/VCF
H/VCF
0
0
0
0
1
0
1
TM
6
6
. A
H/VCF
H/VCF
0
0
0
1
1
0
1
5
5
H/VCF
H/VCF
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
Interface
0
0
0
0
1
0
1
Video Imaging Products
4
4
H/VCF
H/VCF
TM
0
0
1
0
0
0
0
must be disabled. This is
3
3
H/VCF
H/VCF
1
0
1
0
1
0
1
2
2
H/VCF
H/VCF
11/08/2001-LDS.3310-H
0
1
0
1
0
1
1
LF3310
1
1
H/VCF
H/VCF
0*
0
1
0
0
1
0
0
0