lf3321qc9 LOGIC Devices Incorporated, lf3321qc9 Datasheet - Page 11

• Manufacturer Part Number: lf3321qc9
• Description: Horizontal Digital Image Filter
• Manufacturer: LOGIC Devices Incorporated

DEVICES INCORPORATED
LF Interface ™
LOGIC Devices Incorporated
Functional Description
The Filter A and B LF Interfaces
respectively. They are also used to load data into the configuration and control registers.
The following section describes how the Filter A LF Interface
are identical in function. If LDA and CFA11-0 are replaced with LDB and CFB11-0, the following section will
describe how the Filter B LF Interface
LDA is used to enable and disable the Filter A LF Interface
Interface
determines what the interface is going to load. The three most significant bits (CFA11-9) determine if the
LF Interface
significant bits (CFA8-0) are the address for whatever is to be loaded (see Tables 9 through 14). For
example, to load address 15 of the Filter A coefficient banks, the first data value into the LF Interface
should be 00FH.
Table 12 Fltr. B Round Regs
Table 9 Fltr. A Round Regs.
REGISTER ADDRESS (HEX)
REGISTER ADDRESS (HEX)
Table 7. Configuration Register 5 - Adress 205H
14
15
14
15
0
1
0
1
TM
BITS
11-2
0
1
is enabled for data input. The first value fed into the interface on CFA11-0 is an address which
TM
will load coefficient banks or Configuration/control registers (see Table 8). The nine least
800
801
80E
80F
A00
A01
A0E
A0F
11
0
0
0
0
1
1
1
1
FUNCTION
Vertical Limit Enable
Horizontal Limit Enable
Reserved
Table 8. CFA/CFB11-9 Decode
TM
are used to load data into the Filter A and B coefficient banks
10
0
0
1
1
0
0
1
1
Table 10 Fltr. A Select Regs
TM
Table 13 Fltr. B Select Regs
REGISTER ADDRESS (HEX)
REGISTER ADDRESS (HEX)
works.
11
14
15
14
15
0
1
0
1
9
0
1
0
1
0
1
0
1
DESCRIPTION
Coefficient Banks
Configuration Registers
Filter A Select Registers
Filter B Select Registers
Filter A Round Registers
Filter B Round Registers
Filter A Limit Registers
Filter B Limit Registers
DESCRIPTION
0 : Vertical Limiting Disabled
1 : Vertical Limiting Enabled
0 : Horizontal Limiting Disabled
1 : Horizontal Limiting Enabled
Must be set to “0”
400
401
40E
40F
TM
600
601
60E
60F
TM
. When LDA goes LOW, the Filter A LF
works. The Filter A and B LF Interfaces
Horizontal Digital Image Filter
REGISTER ADDRESS (HEX)
REGISTER ADDRESS (HEX)
Table 11 Fltr. A Limit Regs.
Table 14 Fltr. B Limit Regs
Improved Performance
14
15
14
15
Video Imaging Products
0
1
0
1
Feb 5, 2003 LDS.3321-A
C00
C01
C0E
C0F
E00
E01
E0E
E0F
LF3321
TM
TM