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ADDR5 Scheda tecnica(PDF) 3 Page - List of Unclassifed Manufacturers |
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ADDR5 Scheda tecnica(HTML) 3 Page - List of Unclassifed Manufacturers |
3 / 68 page Contents ii i NS7520 Overview........................................................................... 1 Key Features................................................................................ 2 Operating frequency ...................................................................... 3 Packaging and pinout ..................................................................... 4 Pinout detail tables ....................................................................... 6 System Bus interface............................................................. 6 Chip select controller...........................................................10 Ethernet interface MAC.........................................................11 “No connect” pins ...............................................................13 General Purpose I/O ............................................................13 System clock and reset .........................................................15 System mode (test support) ...................................................16 JTAG test .........................................................................16 Power supply .....................................................................17 NS7520 modules...........................................................................18 CPU module ......................................................................18 GEN module ......................................................................18 System (SYS) module............................................................18 BBus module......................................................................19 Memory module (MEM)..........................................................19 DMA controller ...................................................................19 Ethernet controller..............................................................19 Serial controller .................................................................21 NS7520 bootstrap initialization .........................................................22 JTAG...............................................................................22 ARM Debug........................................................................22 DC characteristics and other operating specifications..............................23 Absolute maximum ratings.....................................................24 Pad pullup and pulldown characteristics ....................................24 AC characteristics ........................................................................25 AC electrical specifications ....................................................25 Oscillator Characteristics................................................................27 Timing Diagrams ..........................................................................28 Timing_Specifications...........................................................28 Reset_timing .....................................................................29 SRAM timing ......................................................................30 SDRAM timing ....................................................................40 FP DRAM timing ..................................................................48 Ethernet timing ..................................................................55 JTAG timing ......................................................................57 External DMA timing ............................................................59 Serial internal/external timing................................................61 GPIO timing.......................................................................63 |
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