Table Of Contents - Digi NS7520B-1-C36 Hardware Reference Manual

Contents
C h a p t e r 1 : A b o u t t h e N S 7 5 2 0
NS7520 Features ......................................................................... 2
Key features and operating modes of the major NS7520 modules ........ 2
NS7520 module block diagram......................................................... 5
Operating frequency .................................................................... 6
C h a p t e r 2 : P i n o u t a n d P a c k a g i n g
Packaging ................................................................................. 8
Pinout detail tables and signal descriptions........................................ 11
System bus interface ............................................................ 12
Chip select controller ........................................................... 16
Ethernet interface MAC ......................................................... 18
"No connect" pins ............................................................... 21
General-purpose I/O ............................................................ 21
System clock and reset ......................................................... 24
System mode (test support).................................................... 25
JTAG test (ARM debugger) ..................................................... 26
Power supply ..................................................................... 28
C h a p t e r 3 : W o r k i n g w i t h t h e C P U
ARM Thumb concept ................................................................... 30
CPU performance ....................................................................... 30
Working with ARM exceptions ........................................................ 31
Summary of ARM exceptions ................................................... 32
Exception priorities.............................................................. 32
.................................................................................... 1
......................................................................... 7
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