lf3370 LOGIC Devices Incorporated, lf3370 Datasheet - Page 14

• Manufacturer Part Number: lf3370
• Description: High-definition Video Format Converter
• Manufacturer: LOGIC Devices Incorporated

DEVICES INCORPORATED
expect four values after the address value.
When loading gamma look-up tables, the
interface will expect 1024 values after the
address value. When loading HBLANK
flag counts, the interface will expect 2
values after the address value.
The coefficient banks, configuration
registers, RSL registers, etc., are not loaded
with data until all data values for the
specified address are loaded into the LF
Interface. In other words, the coefficient
banks are not written until all ten coeffi-
cients have been loaded into the LF
Interface™. A RSL register is not written to
until all four data words 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.
PAUSE allows the user to effectively slow
the rate of data loading through the
LF Interface™.
the LF
returned LOW. Figure 19 shows the
effects of PAUSE while loading Matrix
Multiplier/Key Scaler coefficients.
Table 28 shows an example of loading a
bias value into the Input Bias Adder
Register. In this example, a bias value of
007FH is loaded into the Channel ‘C’
Input Bias Adder Register 1 (0B01H).
Table 29 shows an example of loading a
bias value into the Output Bias Adder
Register. In this example, a bias value of
0010H is loaded into Channel ‘A’ Output
Bias Adder Register 3 (0903H).
Table 30 shows an example of loading
data into the Matrix Multiplier/Key
Scaler Coefficient Banks. In this example,
the following values are loaded into
Coefficient Register Set 2 (0002H): 0000H,
0001H, 0002H, 0003H, 0004H, 0005H,
0006H, 0007H, 0008H, and 0009H.
Table 31 shows an example of loading the
HF
20-bit HF
loaded into the HF
0
Flag Count Value. In this example, a
Interface™
0
Flag Count Value of B3C27H is
When PAUSE is HIGH,
is held until PAUSE is
0
Flag Count Value
T
T
ABLE
12-10
ABLE
BITS
BITS
10-9
1-0
3-2
6-5
8-7
1-0
3-2
5-4
8-7
11
12
4
9
6
5. C
6. C
FUNCTION
Video Input Format
Video Output Format
Functional Arrangement
Half-Band Filter Control
Channel ‘B’
Half-Band Filter Control
Channel ‘C’
First Operation Select
Reserved
FUNCTION
Look-Up Table Control
Channel ‘A’
Look-Up Table Control
Channel ‘B’
Look-Up Table Control
Channel ‘C’
HBLANK Control
‘Key’ Channel
Data Bypass Mode ‘W’
Output Channel Mux Control
Look-Up Table Input
Address Selection Control
Input Bias Disable
Output Bias Disable
ONFIGURATION
ONFIGURATION
14
High-Definition Video Format Converter
R
R
EGISTER
EGISTER
Must be Set to Zero
DESCRIPTION
DESCRIPTION
00 : Reserved
01 : Single Channel Interleaved Video
10 : Dual Channel Interleaved Video
11 : 3 Channel Non-Interleaved Video
00 : Reserved
01 : Single Channel Interleaved Video
10 : Dual Channel Interleaved Video
11 : 3 Channel Non-Interleaved Video
00 : Pass Through Filter
01 : Interpolate
10 : Decimate
11 : Bypass Filter
00 : Pass Through Filter
01 : Interpolate
10 : Decimate
11 : Bypass Filter
00 : Disable Look-Up Table
01 : Enable Look-Up Table on Input
10 : Enable Look-Up Table on Output
11 : Reserved
00 : Disable Look-Up Table
01 : Enable Look-Up Table on Input
10 : Enable Look-Up Table on Output
11 : Reserved
00 : Disable Look-Up Table
01 : Enable Look-Up Table on Input
10 : Enable Look-Up Table on Output
11 : Reserved
00 : Output Channel ‘A’ to W
01 : Output Channel ‘B’ to W
10 : Output Channel ‘C’ to W
11 : Output Channel ‘D’ to W
00 : Select Address Data [9:0]
10 : Select Address Data [11:2]
11 : Select Address Data [12:3]
01 : Select Address Data [10:1]
0 : Filter Feeds Matrix Multiplier
1 : Matrix Multiplier Feeds Filter
0 : Normal Order of Operations
1 : Select First Operation Only
0 : Disable Horizontal Blanking Option
0 : Enable Input Bias
1 : Disable Input Bias
0 : Enable Output Bias
1 : Disable Output Bias
1 : Enable Horizontal Blanking Option
0 – A
1 – A
Video Imaging Products
During HBLANK Period
During HBLANK Period
DDRESS
DDRESS
200H
201H
03/13/2001–LDS.3370-F
12-0
12-0
12-0
12-0
LF3370