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SN74ACT2440FNR Scheda tecnica(PDF) 2 Page - Texas Instruments |
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SN74ACT2440FNR Scheda tecnica(HTML) 2 Page - Texas Instruments |
2 / 33 page SN74ACT2440 NuBus ™ INTERFACE CONTROLLER SCHS010 – D3158, OCTOBER 1988 – REVISED JANUARY 1991 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2 Signals Card-Slot NuBus™ SP PFW S U T A T S s u B u N S T U P N I E V A L S R E T S A M E D O C E D E T Y B FUNCTION BOARD SPECIFIC 32 32 2 A31–A0 D31–D0 AO–A1 BT3 BT2 BT1 BT0 NREQ MRDY MLREQ LACK MHOLD NMREQ LOCTM0 LOCTM1 SGNTA SIACK NMSTR NSTART NACK NLOCK NLTMO NLTM1 NCLK NCLK NLRST MDONE NTMO NTM1 SEREQ ACT2440 Controller NuBus™ IDEQ ACLK AEN DEN DCLK IDEQ A15 -A0 AEN ACLK D15 -D0 DEN DCLK ALE DLE A/D 16 16 ADEN 16 16 ADEN ID3 -ID0 16 16 A/D DLE ALE DCLK DEN D15 -D0 ACLK AEN A15 -A0 IDEQ AD31–AD0 32 2 4 4 TM0 SPV TM1 ACK RQST START RESET NMRQ CLK ARB0-3 ID3-0 ADEN ID3-0 A/D ARB0-3 CLK NMRQ RESET START RQST ACK TM0 TM1 SPV SN74BCT2420 Interface Data/Address SN74BCT2420 Interface Data/Address Figure 1. Typical ’ACT2440 NuBus ™ Interface |
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