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IDT7201LA12P Datasheet(PDF) 11 Page - Integrated Device Technology |
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IDT7201LA12P Datasheet(HTML) 11 Page - Integrated Device Technology |
11 / 13 page 11 IDT7200/7201A/7202A CMOS ASYNCHRONOUS FIFO 256 x 9, 512 x 9 and 1,024 x 9 MILITARY, INDUSTRIAL AND COMMERCIAL TEMPERATURE RANGES TABLE I—RESET AND RETRANSMIT Single Device Configuration/Width Expansion Mode Inputs Internal Status Outputs Mode RS RS RT RT XI XI Read Pointer Write Pointer EF EF FF FF HF HF Reset 0 X 0 Location Zero Location Zero 0 1 1 Retransmit 1 0 0 Location Zero Unchanged X X X Read/Write 1 1 0 Increment (1) Increment (1) XX X NOTE: 2679 tbl 09 1. Pointer will increment if flag is High. Figure 14. Block Diagram of 768 x 9, 1,536 x 9, 3,072 x 9 FIFO Memory (Depth Expansion) D W IDT 7200/ 7201A/ 7202A FF EF FL XO RS FULL EMPTY VCC R 9 9 99 XI 9 Q IDT 7200/ 7201A/ 7202A IDT 7200/ 7201A/ 7202A FF EF FL XO XI FF EF FL XO XI TABLE II—RESET AND FIRST LOAD TRUTH TABLE Depth Expansion/Compound Expansion Mode Inputs Internal Status Outputs Mode RS RS FL FL XI XI Read Pointer Write Pointer EF EF FF FF Reset First Device 0 0 (1) Location Zero Location Zero 0 1 Reset All Other Devices 0 1 (1) Location Zero Location Zero 0 1 Read/Write 1 X (1) X X X X NOTE: 2679 tbl 10 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 = Flag Full Output, XI = Expansion Input, HF = Half-Full Flag Output 2679 drw 16 |
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