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LF3320QC12 Datasheet(PDF) 3 Page - LOGIC Devices Incorporated |
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LF3320QC12 Datasheet(HTML) 3 Page - LOGIC Devices Incorporated |
3 / 24 page DEVICES INCORPORATED Video Imaging Products 2-3 LF3320 Horizontal Digital Image Filter 08/16/2000–LDS.3320-N SIGNAL DEFINITIONS Power VCC and GND +3.3 V power supply. All pins must be connected. Clock CLK — Master Clock The rising edge of CLK strobes all enabled registers. Inputs DIN11-0 — Data Input DIN11-0 is the 12-bit data input port to Filter A. In Dual Filter Mode, DIN11-0 can also be the 12-bit input port to Filter B. Data is latched on the rising edge of CLK. RIN11-0 — Reverse Cascade Input In Single Filter Mode, RIN11-0 is the 12- bit reverse cascade input port. This port is connected to ROUT11-0 of another LF3320. In Dual Filter Mode, RIN11-0 can be the 12-bit input port to Filter B. Data is latched on the rising edge of CLK. CFA11-0 — Coefficient A Input CFA11-0 is used to load data into the Filter A coefficient banks (banks 0 through 7) and the configuration/ control registers. Data present on CFA11-0 is latched into the Filter A LF InterfaceTM on the rising edge of CLK when LDA is LOW (see the LF InterfaceTM section for a full discus- sion). CAA7-0 — Coefficient Address A CAA7-0 determines which row of data in coefficient banks 0 through 7 is fed to the multipliers. CAA7-0 is latched into Coefficient Address Register A on the rising edge of CLK when CENA is LOW. CFB11-0 — Coefficient B Input CFB11-0 is used to load data into the Filter B coefficient banks (banks 8 through 15) and the configuration/ control registers. Data present on CFB11-0 is latched into the Filter B LF InterfaceTM on the rising edge of CLK when LDB is LOW (see the LF InterfaceTM section for a full discussion). CAB7-0 — Coefficient Address B CAB7-0 determines which row of data in coefficient banks 8 through 15 is fed to the multipliers. CAB7-0 is latched into CoefficientAddressRegisterBonthe risingedgeofCLKwhenCENBisLOW. Outputs DOUT15-0 — Data Output DOUT15-0 is the 16-bit registered data output port for the overall filter (Single Filter Mode) or Filter A (Dual Filter Mode). COUT11-0 — Cascade Output In Single Filter Mode, COUT11-0 is a 12-bit registered cascade output port. COUT11-0 should be connected to DIN11-0 of another LF3320. In Dual Filter Mode, COUT11-0 is a 12-bit registeredoutputportforthelower twelve bits of the 16-bit Filter B output. FIGURE 2. INPUT FORMATS 11 10 9 2 1 0 –2 11 (Sign) 2 10 2 9 2 2 2 1 2 0 11 10 9 2 1 0 –2 0 (Sign) 2 –1 2–2 2 –9 2–10 2–11 Input Data Coefficient Data TABLE 1. OUTPUT FORMATS SLCT4-0 S15 S14 S13 · · · S8 S7 · · · S2 S1 S0 00000 F15 F14 F13 · · · F8 F7 · · · F2 F1 F0 00001 F16 F15 F14 · · · F9 F8 · · · F3 F2 F1 00010 F17 F16 F15 · · · F10 F9 · · · F4 F3 F2 · · ·· ·· ·· · · · ·· ·· ·· · · · ·· ·· ·· · 01110 F29 F28 F27 · · · F22 F21 · · · F16 F15 F14 01111 F30 F29 F28 · · · F23 F22 · · · F17 F16 F15 10000 F31 F30 F29 · · · F24 F23 · · · F18 F17 F16 FIGURE 3. ACCUMULATOR OUTPUT FORMATS 31 30 29 2 1 0 –2 20 (Sign) 2 19 218 2 –9 2–10 2–11 31 30 29 2 1 0 –2 20 (Sign) 2 19 218 2 –9 2–10 2–11 Accumulator A Output Accumulator B Output |
Similar Part No. - LF3320QC12 |
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Similar Description - LF3320QC12 |
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