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LF3370 Datasheet(PDF) 14 Page - LOGIC Devices Incorporated

Part # LF3370
Description  High-Definition Video Format Converter
PDF  24 Pages
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Manufacturer  LODEV [LOGIC Devices Incorporated]
Direct Link  http://www.logicdevices.com
Logo LODEV - LOGIC Devices Incorporated

LF3370 Datasheet(HTML) 14 Page - LOGIC Devices Incorporated

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LF3370
High-Definition Video Format Converter
14
03/13/2001–LDS.3370-F
Video Imaging Products
DEVICES INCORPORATED
expectfourvaluesaftertheaddressvalue.
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,RSLregisters,etc.,arenotloaded
with data until all data values for the
specified address are loaded into the LF
Interface. Inotherwords,thecoefficient
banks are not written until all ten coeffi-
cients have been loaded into the LF
Interface™. ARSLregisterisnotwrittento
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.
PAUSEallowstheusertoeffectivelyslow
the rate of data loading through the
LF Interface™. When PAUSE is HIGH,
the LF Interface™is held until PAUSE is
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
HF0 Flag Count Value. In this example, a
20-bit HF0 Flag Count Value of B3C27H is
loaded into the HF0 Flag Count Value
BITS
FUNCTION
DESCRIPTION
1-0
Look-Up Table Control
00 : Disable Look-Up Table
Channel ‘A’
01 : Enable Look-Up Table on Input
10 : Enable Look-Up Table on Output
11 : Reserved
3-2
Look-Up Table Control
00 : Disable Look-Up Table
Channel ‘B’
01 : Enable Look-Up Table on Input
10 : Enable Look-Up Table on Output
11 : Reserved
5-4
Look-Up Table Control
00 : Disable Look-Up Table
Channel ‘C’
01 : Enable Look-Up Table on Input
10 : Enable Look-Up Table on Output
11 : Reserved
6
HBLANK Control
0 : Disable Horizontal Blanking Option
‘Key’ Channel
During HBLANK Period
1 : Enable Horizontal Blanking Option
During HBLANK Period
8-7
Data Bypass Mode ‘W’
00 : Output Channel ‘A’ to W12-0
Output Channel Mux Control
01 : Output Channel ‘B’ to W12-0
10 : Output Channel ‘C’ to W12-0
11 : Output Channel ‘D’ to W12-0
10-9
Look-Up Table Input
00 : Select Address Data [9:0]
Address Selection Control
01 : Select Address Data [10:1]
10 : Select Address Data [11:2]
11 : Select Address Data [12:3]
11
Input Bias Disable
0 : Enable Input Bias
1 : Disable Input Bias
12
Output Bias Disable
0 : Enable Output Bias
1 : Disable Output Bias
TABLE 6.
CONFIGURATION REGISTER 1 – ADDRESS 201H
BITS
FUNCTION
DESCRIPTION
1-0
Video Input Format
00 : Reserved
01 : Single Channel Interleaved Video
10 : Dual Channel Interleaved Video
11 : 3 Channel Non-Interleaved Video
3-2
Video Output Format
00 : Reserved
01 : Single Channel Interleaved Video
10 : Dual Channel Interleaved Video
11 : 3 Channel Non-Interleaved Video
4
Functional Arrangement
0 : Filter Feeds Matrix Multiplier
1 : Matrix Multiplier Feeds Filter
6-5
Half-Band Filter Control
00 : Pass Through Filter
Channel ‘B’
01 : Interpolate
10 : Decimate
11 : Bypass Filter
8-7
Half-Band Filter Control
00 : Pass Through Filter
Channel ‘C’
01 : Interpolate
10 : Decimate
11 : Bypass Filter
9
First Operation Select
0 : Normal Order of Operations
1 : Select First Operation Only
12-10
Reserved
Must be Set to Zero
TABLE 5.
CONFIGURATION REGISTER 0 – ADDRESS 200H



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