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IDT72V3624 Datasheet(PDF) 21 Page - Integrated Device Technology |
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IDT72V3624 Datasheet(HTML) 21 Page - Integrated Device Technology |
21 / 34 page 21 COMMERCIALTEMPERATURERANGE IDT72V3624/72V3634/72V3644 3.3V CMOS SyncBiFIFOTM WITH BUS-MATCHING 256 x 36 x 2, 512 x 36 x 2, 1,024 x 36 x 2 SIZE MODE(1) DATA WRITTEN TO FIFO1 READ NO. DATA READ FROM FIFO1 BM SIZE BE A35-A27 A26-A18 A17-A9 A8-A0 B17-B9 B8-B0 HL H A B C D 1 A B 2C D HL L A B C D 1 C D 2A B DATA SIZE TABLE .OR WORD READS .ROM .I.O1 Figure 12. Port-B Word Read Cycle Timing for FIFO1 (IDT Standard and FWFT Modes) NOTE: 1. BE is selected at Master Reset; BM and SIZE must be static throughout device operation . SIZE MODE(1) DATA WRITTEN TO FIFO1 DATA READ FROM FIFO1 BM SIZE BE A35-A27 A26-A18 A17-A9 A8-A0 B35-B27 B26-B18 B17-B9 B8-B0 L X X A BC DA BC D NOTE: 1. Read From FIFO1. DATA SIZE TABLE .OR .I.O LONG-WORD READS .ROM .I.O1 Figure 11. Port B Long-Word Read Cycle Timing for FIFO1 (IDT Standard and FWFT Modes) NOTE: 1. Unused word B18-B35 are indeterminate for word-size reads. NOTE: 1. BE is selected at Master Reset; BM and SIZE must be static throughout device operation . 4664 drw13 CLKB EFB/ORB ENB MBB CSB W/RB tCLK tCLKH tCLKL tA tMDV tEN tA tENH tENH W1 W2 W3 (1) (1) tENH tDIS No Operation B0-B35 (FWFT Mode) tEN W2 (1) tDIS W1 Previous Data B0-B35 (Standard Mode) tMDV tA OR tA HIGH tENS2 tENS2 tENS2 (1) (1) CLKB ENB EFB/ORB W/RB CSB HIGH 4664 drw14 B0-B17 (Standard Mode) B0-B17 (FWFT Mode) OR Previous Data tA tA tENS2 tENH No Operation Read 1 tA tA Read 1 Read 2 Read 2 Read 3 MBB tEN tMDV tEN tMDV tDIS tDIS |
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