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AS87C196CB20 Datasheet(PDF) 13 Page - Intel Corporation |
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AS87C196CB20 Datasheet(HTML) 13 Page - Intel Corporation |
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13 / 36 page ![]() Figure 5. Chip Configuration Registers CCB (2018H : Byte) 0 1 2 3 4 5 6 7 PD BW0 WR ALE IRC0 IRC1 LOC0 LOC1 = = = = = = = = “1” Enables Powerdown See Table “1” = WR#/BHE - “0” = WRL#/WRH# “1” = ALE - “0” = ADV }See Table }See Table CCB1 (201AH : Byte) 0 1 2 3 4 5 6 7 CCR2 IRC2 BW1 WDE 1 0 MEMSEL0 MEMSEL1 = = = = = = = = “1” Fetch CCB2 See Table See Table “0” = Always Enabled Reserved Must Be “1” Reserved Must Be “0” See Table See Table LOC1 LOC0 Function IRC2 IRC1 IRC0 Max Wait States 0 0 1 1 0 1 0 1 Read and Write Protected Write Protected Only Read Protected Only No Protection 0 1 1 1 1 0 0 0 1 1 0 0 1 0 1 Zero Wait States 1 Wait State 2 Wait States 3 Wait States INFINITE MSEL1 MSEL0 “CB” Bus Timing Mode BW1 BW0 Bus Width 0 0 1 1 0 1 0 1 Mode 0 (1-Wait KR) Reserved Reserved Mode 3 (KR) 0 0 1 1 0 1 0 1 ILLEGAL 16-Bit Only 8-Bit Only BW Pin Controlled Mode 0 (1-Wait KR): Designed to be similar to the 87C196KR bus timing with 1 automatic wait state. See AC Timings section for actual timings data. Mode 3 (KR): Designed to be similar to the 87C196KR bus timing. See AC Timings section for actual timings data. CCB2 (201CH : Byte) 0 1 2 3 4 5 6 7 0 MODE16 REMAP 1 1 1 1 1 = = = = = = = = Reserved Must Be “0” Select 16-Bit or 24-Bit Mode “0”–Select EPROM/CODERAM in Segment 0FFH only “1”–Select Both Segment 0FFH and Segment 00H Reserved Must Be “1” Reserved Must Be “1” Reserved Must Be “1” Reserved Must Be “1” Reserved Must Be “1” } Production Datasheet 9 87C196CB - Automotive |
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