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IDT72V82L15PA Datasheet(PDF) 9 Page - Integrated Device Technology |
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IDT72V82L15PA Datasheet(HTML) 9 Page - Integrated Device Technology |
9 / 11 page 9 Commercial Temperature Range IDT72V81/72V82/72V83/72V84/72V85 TABLE IIRESET AND FIRST LOAD TRUTH TABLE Depth Expansion/Compound Expansion Mode Inputs Internal Status Outputs Mode RS RS RS RS RS FL FL FL FL FL XI XI XI XI XI Read Pointer Write Pointer EF EF EF EF EF FF FF FF FF FF Reset First Device 0 0 (1) LocationZero LocationZero 0 1 Reset All Other Devices 0 1 (1) LocationZero LocationZero 0 1 Read/Write 1 X (1) X X X X NOTE: 1. XI is connected to XO of previous device. See Figure 14. RS = Reset Input, FL/RT = First Load/Retransmit, EF = Empty Flag Output, FF = Full Flag Output, XI = Expan- sion Input, HF = Half-Full Flag Output TABLE IRESET AND RETRANSMIT Single Device Configuration/Width Expansion Mode Inputs Internal Status Outputs Mode RS RS RS RS RS RT RT RT RT RT XI XI XI XI XI Read Pointer Write Pointer EF EF EF EF EF FF FF FF FF FF HF HF HF HF HF Reset 0 X 0 LocationZero LocationZero 0 1 1 Retransmit 1 0 0 LocationZero Unchanged X X X Read/Write 1 1 0 Increment (1) Increment (1) XX X NOTE: 1. Pointer will increment if flag is High. Figure 14. Block Diagram of 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9 and 32,768 x 9 FIFO Memory (Depth Expansion) D W FFB EFB FLB XOB RSA FULL EMPTY V CC R 9 9 99 XIB 9 Q FFA EFA FLA XOA XIA FFB EFB FLB XIB 3966 drw 16 XOA FIFO A FIFO B FIFO A FIFO B XIA XOB EFA FLA FFA 72V81/72V82 72V83/72V84 72V85 72V81/72V82 72V83/72V84 72V85 |
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