NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 6
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NS7520B-1-I46
Manufacturer Part Number
NS7520B-1-I46
Description
IC ARM MICROPROCESSOR 177BGA
Manufacturer
Digi International
Series
NET+ARM®r
Specifications of NS7520B-1-I46
Applications
Network Processor
Core Processor
ARM7
Program Memory Type
External Program Memory
Controller Series
-
Ram Size
External
Interface
EBI/EMI, Ethernet, DMA, SPI, UART
Number Of I /o
16
Voltage - Supply
1.4 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
177-LFBGA
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NS7520B-1-I46
Manufacturer:
Digi International
Quantity:
10 000
Part Number:
NS7520B-1-I46
Manufacturer:
NETARM
Quantity:
20 000
- Current page: 6 of 338
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C h a p t e r 4 : B B u s M o d u l e
C h a p t e r 5 : S Y S M o d u l e
C h a p t e r 6 : G E N M o d u l e
Hardware Interrupts.................................................................... 39
BBus masters and slaves ............................................................... 44
Cycles and BBus arbitration ........................................................... 44
Address decoding ....................................................................... 45
Signal description....................................................................... 48
JTAG support ............................................................................ 48
ARM debug ............................................................................... 48
System clock generation (NS7520 clock module) .................................. 49
Using the external oscillator.......................................................... 50
Using the PLL circuit ................................................................... 51
Setting the PLL frequency............................................................. 54
Reset circuit sources ................................................................... 59
NS7520 bootstrap initialization....................................................... 59
Module configuration................................................................... 62
GEN module hardware initialization ................................................. 62
GEN module registers .................................................................. 63
Exception vector table.......................................................... 33
Detail of ARM exceptions ....................................................... 34
Entering and exiting an exception (software action) ...................... 37
FIRQ and IRQ lines ............................................................... 39
Interrupt controller.............................................................. 39
Interrupt sources................................................................. 40
External oscillator vs. internal PLL circuit................................... 49
NS7520 clock module block diagram.......................................... 50
External oscillator mode hardware configuration .......................... 50
PLL mode hardware configuration ............................................ 52
PLL Settings register: Setting the PLL frequency on bootup .............. 54
PLL Control register: Setting the PLL frequency with the PLL Control
register ............................................................................ 57
...................................................................................................47
..................................................................................................61
................................................................................................43
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