Os motores de busca de Datasheet de Componentes eletrônicos |
|
LF3311 Folha de dados(PDF) 1 Page - LOGIC Devices Incorporated |
|
LF3311 Folha de dados(HTML) 1 Page - LOGIC Devices Incorporated |
1 / 24 page DEVICES INCORPORATED LF3311 Horizontal / Vertical Digital Image Filter Improved Performance LOGIC Devices Incorporated 1 9/19/05 LDS.3311-C Video Imaging Products 111 MHz Data Rate 12-bit Data and Coefficients On-board Memory for 256 Horizontal and 256 Verti- cal Coefficient Sets LF Interface™ Allows All 512 Coefficient Sets to be Updated Within Vertical Blanking Selectable 12-bit Data Output with User-Defined Rounding and Limiting Seven 3K x 12-bit, Programmable Two-Mode Line Buffers 16 Horizontal Filter Taps 8 Vertical Filter Taps Two Operating Modes: Dimensionally Sepa- rate and Orthogonal Supports Interleaved Data Streams Horizontal Filter Supports Decimation up to 16:1 for Increasing Number of Filter Taps 3.3 Volt Power Supply 5 Volt Tolerant I/O 144 Lead PQFP The LF3311 is an improved version of the LF3310 Horizontal/Vertical Digital Image Filter capable of operating at speeds of up to 111MHz. This improved speed will increase flexibility and performance. The added performance will enable you to use this device in more applications. For example, four interleaved data streams of 27MHz can now be processed within one device. The part is functionally identical to the LF3310 with the exception that the filter data path is specified to operate faster than the LF Control Interface. When operating the filter at speeds in excess of 90MHz, loading of coefficients via the LF Interface must be throttled to a maximum of 90MHz by asserting the PAUSE pin as required to allow sufficient setup time for the configuration data provided to the Figure 1 below demonstrates the switching waveforms of case 2, while the switching characteristics are shown in Table 1. The LF3311 remains a two-dimensional digital image filter capable of filtering data at real-time video rates. The device contains both a horizontal and a vertical filter which may be cascaded or used concurrently for two-dimensional filtering. The input, coefficient, and output data are all 12-bits and in two’s complement format. The horizontal filter is designed to take advantage of symmetric coefficient sets. When symmetric coefficient sets are used, the horizontal filter can be configured as a 16-tap FIR filter. When asymmetric coefficient sets are used, it can be configured as an 8-tap FIR filter. The vertical filter is an 8-tap FIR filter with all required line buffers contained on-chip. The line buffers can store video lines with lengths from 4 to 3076 pixels. Horizontal filter Interleave/Decimation Registers (I/D Registers) and the vertical filter line buffers allow interleaved data to be fed directly into the device and filtered without separating the data into individual data streams. The horizontal filter can handle a maximum of sixteen data sets interleaved together. The vertical filter can handle interleaved video lines which contain 3076 or less data values. The I/D Registers and horizontal accumulator facilitate using decimation to increase the number of filter taps in the horizontal filter. It will support a decimation factor of up to 16:1. The device has on-chip storage for 256 horizontal coefficient sets and 256 vertical coefficient sets. Each filter’s coefficients are loaded independently of each other allowing one filter’s coefficients to be updated without affecting the other filter’s coefficients. In addition, a horizontal or vertical coefficient set can be updated independently from the other coefficient sets in the same filter. FEATURES DESCRIPTION Figure 1. Switching Waveforms: LF InterfaceTM tS0 tCFS tPWH tCYC tPWL ADDRESS tPH PAUSEA PAUSEB CFA 11-0 CFB 11-0 tLH CLK LDA LDB tCFH tPS CF0 CF1 |
Nº de peça semelhante - LF3311 |
|
Descrição semelhante - LF3311 |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes 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 |