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IDT7210L35J Datasheet(PDF) 2 Page - Integrated Device Technology |
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IDT7210L35J Datasheet(HTML) 2 Page - Integrated Device Technology |
2 / 10 page 11.2 2 IDT7210L 16 x 16 PARALLEL CMOS MULTIPLIER-ACCUMULATOR MILITARY AND COMMERCIAL TEMPERATURE RANGES DESCRIPTION (Continued) The Accumulate input (ACC) enables the device to perform either a multiply or a multiply-accumulate function. In the multiply-accumulate mode, output data can be added to or subtracted from previous results. When the Subtraction (SUB) input is active simultaneously with an active ACC, a subtraction can be performed. The double precision accumulated result is rounded down to either a single precision or single precision plus 3-bit extended result. In the multiply mode, the Extended Product output (XTP) is sign extended in the two’s complement mode or set to zero in the unsigned mode. The Round (RND) control rounds up the Most Significant Product (MSP) and the 3-bit Extended Product (XTP) outputs. When Preload input (PREL) is active, all the output buffers are forced into a high- impedance state (see Preload truth table) and external data can be loaded into the output register by using the TSX, TSL and TSM signals as input controls. PIN CONFIGURATIONS DIP TOP VIEW PLCC TOP VIEW FLATPACK TOP VIEW 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 17181920 212223242526 272829 303132 64636261 605958575655 545352 515049 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P0 , Y0 X0 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 2577 drw 04 F64-1 P29 P30 P31 22 23 2 3 5 6 J68-1, L68-1 60 59 58 5756 55 54 53 5251 50 4948 47 46 45 44 61 62 63 64 65 66 67 68 1 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 P1, Y1 X0 2577 drw 03 P33 P32 P31 P30 P29 P28 P27 P26 P25 P24 P23 P22 P21 P20 P19 P18 10 11 1213 14 1516 17 18 19 20 21 24 25 26 4 P0, Y0 7 8 9 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 P17 J68-1 C64-2 2577 drw 02 X4 X3 X2 X1 X0 P23 P22 P21 P20 P19 P18 P16 P17 P15, P14, P13, P12, P11, P9, P10, P8, P7, P6, P5, P4, P3, P2, P1, P0, 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 X7 X8 X9 X10 X11 X12 P24 P25 P26 P27 P28 P29 P31 P30 CLKP TSM TSX PREL TC VCC RND CLKX X15 X14 X13 X5 X6 GND TSL CLKY SUB ACC P32 P33 P34 |
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