LF3320QC15 LODEV [LOGIC Devices Incorporated], LF3320QC15 Datasheet - Page 17

• Manufacturer Part Number: LF3320QC15
• Description: Horizontal Digital Image Filter
• Manufacturer: LODEV [LOGIC Devices Incorporated]

DEVICES INCORPORATED
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, LDA must remain
LOW. After all desired coefficient banks
and Configuration/Control registers are
loaded with data, the LF Interface
must be disabled. This is done by
setting LDA HIGH on the clock cycle
after the clock cycle which latches the
last data value. It is important that the
LF Interface
not loading data into it.
The Filter A coefficient banks may only be
loaded with the Filter A LF Interface
the Filter B coefficient banks may only be
loaded with the Filter B LF Interface
F
F
IGURE
PAUSEA/PAUSEB
IGURE
PAUSEA/PAUSEB
CFA/CFB
CFA/CFB
LDA/LDB
LDA/LDB
20. C
21. R
TM
CLK
CLK
11-0
11-0
remain disabled when
W1: Configuration Register loaded with new data on this rising clock edge.
W2: Select Register loaded with new data on this rising clock edge.
W1: Round Register loaded with new data on this rising clock edge.
ONFIGURATION AND
OUND
R
ADDR
ADDR
EGISTER
1
1
CONFIGURATION REGISTER
TM
TM
TM
and
L
.
OADING
S
ELECT
The Configuration and Control
registers may be loaded with either the
Filter A or B LF Interfaces
Since both LF Interfaces
independently of each other, both LF
Interfaces
respective coefficient banks at the same
time. Or, one LF Interface
the Configuration/Control registers
while the other loads it’s respective
coefficient banks. If both LF
Interfaces
ration or Control register at the same
time, the Filter B LF Interface
given priority over the Filter A LF
Interface
LF Interface
into a configuration register at the
same time that the Filter B LF
Interface
DATA
S
R
EQUENCE WITH
1
DATA
EGISTER
TM
TM
TM
TM
1
. For example, if the Filter A
attempts to load a Filter A
TM
are used to load a Configu-
can load data into their
attempts to load data
W1
L
2-17
OADING
ROUND REGISTER
PAUSE I
DATA
TM
TM
TM
2
operate
S
.
ADDR
can load
EQUENCE WITH
TM
will be
MPLEMENTATION
2
Horizontal Digital Image Filter
SELECT REGISTER
DATA
round register, the Filter B LF
Interface
round register while the Filter A LF
Interface
the configuration register. However,
the Filter A LF Interface
continue to function as if the write
occurred.
11 10 9 DESCRIPTION
0 0 0 Coefficient Banks
0 0 1 Configuration Registers
0 1 0 Filter A Select Registers
0 1 1 Filter B Select Registers
1 0 0 Filter A Round Registers
1 0 1 Filter B Round Registers
1 1 0 Filter A Limit Registers
1 1 1 Filter B Limit Registers
Video Imaging Products
T
PAUSE I
ABLE
3
TM
TM
8. CFA/CFB
will be allowed to load the
will not be allowed to load
MPLEMENTATION
DATA
DATA
1
11-9
4
08/16/2000–LDS.3320-N
TM
W2
W1
will
LF3320
D
ECODE