LF2301 LODEV [LOGIC Devices Incorporated], LF2301 Datasheet
LF2301
Related parts for LF2301
LF2301 Summary of contents
Page 1
... A through N of the transform are user-defined. The system steps sequentially through each pixel in the “target” image lying within a user-defined rectangle. For each “target” pixel at (u,v), the LF2301 points to a corresponding “source” pixel at (x,y). Video Imaging Products 08/16/2000–LDS.2301-H ...
Page 2
... UWRI from either the row or column LF2301 may be used. INTER — Interconnect When two LF2301s are used to form an ITS, the END flag on each device is connected to INTER on the other device. The END flag from the row device indicates an “end of line” to the column device. The END flag from the column device indicates a “ ...
Page 3
... X address 11 frame. DONE — End of Transform In a two LF2301 system, after the last walk of the last row of an image, the registered DONE flag goes HIGH indicating the end of the transform. DONE goes HIGH one clock cycle before the last X address of a frame ...
Page 4
... R/C — Row/Column Select When set to 0, the LF2301 functions as a row device. When set to 1, the LF2301 functions as a column device. M — Mode 1-0 This 2-bit control word defines four ...
Page 5
... VMAX important to note that the U value of the last pixel address on each line of the target RAM is UMAX + 1. b. The LF2301s calculate the address of the corresponding pixel in the source image RAM for each target pixel address generated interpolation is needed, the ...
Page 6
... DEVICES INCORPORATED Transformation Parameter Register Loading The LF2301 allows Transformation Parameters to be updated on-the-fly. The loading of these registers is double-buffered (see Figure 4). Any or all of the first level registers can be loaded using and 11-0 3-0 WEN without affecting the param- eters currently in use. LDR simultaneously updates all Transformation Parameter Registers ...
Page 7
... The first pixel selected is determined by x and this 0 0 example, the first pixel is (6,6). In this case, the LF2301s should ad- dress consecutive pixels during each spiral walk. For this to occur, FOV must be set loaded with 2-0 “001”). ...
Page 8
... Video Imaging Products 08/16/2000–LDS.2301-H LF2301 DONE ...
Page 9
... It is important to note that the integer 1-0 portion of the address generated in the LF2301 is used as the pixel address. The fractional portion (sub-pixel portion) is used as the coefficient RAM address. UMIN and VMIN are both selected ...
Page 10
... LF2301 Image Resampling Sequencer NTERPOLATION ACC UWRI END x END ...
Page 11
... In this example, the first pixel is 0 (0,0). In this case, the LF2301s should address consecutive pixels during each pixel walk. For this to occur, FOV must be set loaded with “001”). 2-0 After the last pixel of a pixel walk has ...
Page 12
... this example, the first pixel is (0,0). In this case, the LF2301s should address consecutive pixels during each pixel walk. For this to occur, FOV must be set loaded with “001”). 2-0 After the last pixel of a pixel walk has ...
Page 13
... Min 4 (Note 3) Ground V V (Note 12 Ground V V (Note 12) OUT CC (Notes 5, 6) (Note 25° MHz 25° MHz A 2-13 LF2301 Image Resampling Sequencer + 0 0 Voltage Supply Min Typ Max 2.4 0.4 2 0.0 0 ...
Page 14
... Max Min Max Min LF2301– Max Min Max Min Video Imaging Products 08/16/2000–LDS.2301-H LF2301 25 Max Max ...
Page 15
... CYC UTPUTS AND ONTROL INES t CYC DIS HIGH IMPEDANCE 2-15 Image Resampling Sequencer ENA t DIS t ENA HIGH IMPEDANCE t DIS t ENA HIGH IMPEDANCE Video Imaging Products 08/16/2000–LDS.2301-H LF2301 ...
Page 16
... ENA OE 1 Measured V with I = –10mA and Measured V with I = –10mA and Video Imaging Products 08/16/2000–LDS.2301-H LF2301 test, DIS C IRCUIT EVELS t DIS 3.5V Vth 0 0 Vth = 10mA OL = 10mA OL ...
Page 17
... Top 18 View Plastic J-Lead Chip Carrier (J2) S CREENING LF2301JC55 LF2301JC25 2-17 LF2301 Image Resampling Sequencer GND GND ...
Page 18
... OMPLIANT 2-18 Image Resampling Sequencer GND GND Video Imaging Products LF2301 08/16/2000–LDS.2301-H ...