 |
công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
|
công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
LF48908 bảng dữ liệu(PDF) 1 Page - LOGIC Devices Incorporated |
|
|
|||||||||||||||||||||||||||||
LF48908 bảng dữ liệu(HTML) 1 Page - LOGIC Devices Incorporated |
|
|
1 / 16 page  DEVICES INCORPORATED 1 LF48908 Two Dimensional Convolver 1 2 3 4 5 6 7 8 9 10 11 08/9/2000–LDS.48908-J Video Imaging Products u u u u u 40 MHz Data and Computation Rate u u u u u Nine Multiplier Array with 8-bit Data and 8-bit Coefficient Inputs u u u u u Separate Cascade Input and Output Ports u u u u u On-board Programmable Row Buffers u u u u u Two Coefficient Mask Registers u u u u u On-board 8-bit ALU u u u u u Two’s Complement or Unsigned Operands u u u u u Replaces Harris HSP48908 u u u u u DECC SMD No. 5962-93007 u u u u u Package Styles Available: • 84-pin Plastic LCC, J-Lead • 100-pin Plastic Quad Flatpack FEATURES DESCRIPTION LF48908 Two Dimensional Convolver DEVICES INCORPORATED The LF48908 is a high-speed two dimensional convolver that imple- ments a 3 x 3 kernel convolution at real-time video rates. Programmable row buffers are located on-chip, eliminating the need for external data storage. Each row buffer can store up to 1024 pixels. Two internal register banks are provided allowing two separate sets of filter coefficients to be stored simultaneously. Adaptive filter operations are possible when both register banks are used. An on-chip ALU is provided, allowing real-time arithmetic and logical pixel point operations to be performed on the image data. The 3 x 3 convolver comprises nine 8 x 8-bit multipliers, various pipeline registers, and sum- mers. A complete sum-of-products operation is performed every clock cycle. The FRAME signal resets all data registers without affecting the control and coefficient registers. Pixel and coefficient input data are both 8-bits and can be either signed or unsigned integers. Image data should be in a raster scan non-interlaced format. The LF48908 can internally store images as wide as 1024 pixels for the 3 x 3 convolution. By using external row buffers and multiple LF48908s, longer pixel rows can be used and convolutions with larger kernel sizes can be performed. Out- put data is 20-bits and this guarantees no overflow for kernel sizes up to 4 x 4. A separate cascade input is used as the data input for summing results from multiple LF48908s. It can also function as the data input path when external line buffers are used. FIGURE 1. LF48908 BLOCK DIAGRAM DIN7-0 CIN9-0 CASO7-0 A2-0 LD CS CASI15-0 CLK HOLD FRAME RESET OE DOUT19-0 16 3 8 8 20 8 EALU 3 x 3 CONVOLVER ALU ROW BUFFERS CONTROL LOGIC |
Số phần tương tự - LF48908 |
|
Mô tả tương tự - LF48908 |
|
|
|
Link URL |
| Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Liên kết đến bảng dữ liệu | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Vietnamese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
