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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SAA7380GP датащи(PDF) 39 Page - NXP Semiconductors |
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SAA7380GP датащи(HTML) 39 Page - NXP Semiconductors |
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39 / 60 page  1996 Apr 25 39 Philips Semiconductors Preliminary specification Error correction and host interface IC for CD-ROM (ELM) SAA7380 MULTI-WORD DMA TRANSFER; see Fig.16; note 3 t0 cycle time 130 −− ns t1 HWR/HRD to DMARQ inactive −− 40 ns t2 DMACK to HWR/HRD 0 −− ns t3 HWR/HRD active 80 −− ns t4 HWR/HRD inactive 50 −− ns t5 HWR/HRD to DMACK hold 5 −− ns t6 HWR data set-up 30 −− ns t7 HWR data hold 15 −− ns t8 HRD data access −− 60 ns t9 HRD data hold 5 −− ns t10 DMACK inactive to read data 3-state −− 25 ns Sanyo compatibility mode host interface timing; see Fig.17 COMIN AND SBOUT ACCESS t0 HEN set-up 30 −− ns t1 HEN hold 0 −− ns t2 CMD set-up 15 −− ns t3 CMD hold 5 −− ns t4 HWR/HRD active 33 MHz clock 50 −− ns 16 MHz clock 75 −− ns t5 HWR/HRD data inactive 33 MHz clock 60 −− ns 16 MHz clock 145 −− ns t6 HWR data set-up 50 −− ns t7 HWR data hold 20 −− ns t8 HRD data access −− 80 ns t9 HRD data to 3-state 5 − 60 ns t10 STEN to HRD only for SBOUT read 0 −− ns t11 HRD to STEN inactive for last SBOUT read; 33 MHz clock −− 100 ns 16 MHz clock −− 145 ns t12 HWR to DTEN/STEN inactive only for COMIN write when CMDBK = 0 −− 100 ns SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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