Ns7520 Module Block Diagram - Digi NS7520B-1-C36 Hardware Reference Manual

NS7520 module block diagram

Figure 1 is an overview of the NS7520, including all the modules.
Power
Figure 1: NS7520 overview
PLL
System
Clock
BBUS
D D
M M
A A
3.3V
Serial-A Serial-B
1.5V
UART UART
SPI SPI
16 GPIO
Serial transceivers and other
devices
Debugger
JTAG Debug
NS7520
Interface
FIRQ
ARM7TDMI
IRQ
2 timers
D
M
A
4 Ethernet
level controller
interrupt
inputs 802.3
compliant
MII
w w w . d i g i e m b e d d e d . c o m
A b o u t t h e N S 7 5 2 0
Reset
Watchdog
timer
D
M
A
External
memory
controller
Address bus
Memory
devices
Flash
SRAM
Boot
FP DRAM
config
SDRAM
5