PDF DMA2281 Data sheet ( Hoja de datos )

Número de pieza	DMA2281
Descripción	C/D/D2-MAC Decoder
Fabricantes	Micronas
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No Preview Available ! MICRONAS INTERMETALL DMA 2271, DMA 2280, DMA 2281 C/D/D2–MAC Decoder Edition August 5, 1991 6251–331–1E MICRONAS 1 page DMA 2271, DMA 2280, DMA 2281 2. Specifications 2.1. Outline Dimensions Fig. 2–1: DMA 2271, DMA 2280, DMA 2281 in 68–pin PLCC package Weight approx. 4.5 g, Dimensions in mm 2.2. Pin Connections Pin Nr. Signal Name Symbol 1 RAM Data Input/Output RDAT 2 RAM Address Output 0 (LSB) RA0 3 RAM Address Output 1 RA1 4 RAM Address Output 2 RA2 5 RAM Address Output 3 RA3 6 RAM Address Output 4 RA4 7 RAM Read/Write Output R/WQ 8 Row Address Select Output RASQ 9 RAM Address Output 5 RA5 10 RAM Address Output 6 RA6 11 RAM Address Output 7 (MSB) RA7 12 IM Bus Clock Input IMC 13 IM Bus Ident Input IMI 14 IM Bus Data Input/Output IMD 15 Reset Input RESQ 16 18.432 MHz Output XTAL1 17 18.432 MHz Input XTAL2 18 Output Disable Input ODI 19 leave vacant 20 leave vacant 21 Chroma Output 7 (MSB) CO7 22 Chroma Output 6 CO6 23 Chroma Output 5 CO5 24 Chroma Output 4 CO4 25 PLL Tuning Data Output PLLD 26 PLL Tuning Clock Output PLLC 27 Chroma Output 3 CO3 28 Chroma Output 2 CO2 29 Chroma Output 1 CO1 30 Chroma Output 0 (LSB) CO0 31 Luma Output 0 LO0 32 Luma Output 1 LO1 33 Luma Output 2 LO2 34 Luma Output 3 LO3 35 Luma Output 4 LO4 36 Luma Output 5 LO5 37 Luma Output 6 LO6 38 Luma Output 7 (MSB) LO7 39 Baseband Input 7 (MSB) BI7 40 Baseband Input 6 BI6 41 Baseband Input 5 BI5 42 Baseband Input 4 BI4 43 Baseband Input 3 BI3 44 Baseband Input 2 BI2 45 Baseband Input 1 BI1 46 Baseband Input 0 (LSB) BI0 47 leave vacant 48 Clamping Output CLMP 49 AGC Output AGC 50 Combined Output for Horizon- KEY tal Blanking and Key 5 5 Page DMA 2271, DMA 2280, DMA 2281 Recommended Operating Conditions, continued Symbol tIM7 tIM8 tIM9 tIM10 Parameter IM Bus Data Input Delay Time after ΦI Clock Input IM Bus Data Input Setup Time before ΦI Clock Input IM Bus Data Input Hold Time after ΦI Clock Input IM Bus Ident End–Pulse Low Time Pin No. 12 to 14 Min. 0 0 0 3.0 Typ. Max. –– –– –– –– Unit – – – µs 2.5.3. Recommended Crystal Characteristics Symbol Parameter Min. Typ. Max. Unit TA Ambient Operating Temperature –20 fp Parallel Resonance Frequency – ∆fp Accuracy of Adjustment fp – ∆fp Frequency Deviation versus Temperature – fp Rr Series Resistance – C0 Shunt Capacitance 5.5 C1 Motional Capacitance 15 P Rated Drive Level – – 18.432) – +85 – ±40 – ±40 – 50 – 7.5 – 20 0.02 – °C MHz ppm ppm Ω pF fF mW fp Spurious Frequency Attenuation 20 – – dB fH ) at CL = 10 pF. This frequency applies for a certain application. For other applications, an appropriate frequency must be chosen. 11 11 Page

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