NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 233
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
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Serial port performance
Configuration
The serial ports have a finite performance limit on their ability to handle various
serial protocols. Performance is limited by the speed of the SYSCLK operating the
NS7520. The configured speed for the internal PLL defines the SYSCLK rate, as shown
in this table:
The serial controller module has a block of configuration space as shown:
UART (x16)
UART (x1)
SPI
FFD0 0000
FFD0 0004
FFD0 0008
FFD0 000C
FFD0 0010
FFD0 0014
FFD0 0018
FFD0 001C
FFD0 0020
FFD0 0040
FFD0 0044
FFD0 0048
Operating Mode
Address
Channel 1 Control Register A
Channel 1 Control Register B
Channel 1 Status Register A
Channel 1 Bit-Rate register
Channel 1 FIFO Data register
Channel 1 Receive Buffer Gap Timer
Channel 1 Receive Character Gap Timer
Channel 1 Receive Match register
Channel 1 Receive Match Mask register
Channel 2 Control Register A
Channel 2 Control Register B
Channel 2 Status Register A
Register
SYSCLK/64
SYSCLK/4
SYSCLK/6
Serial Port Maximum Rate
w w w . d i g i e m b e d d e d . c o m
S e r i a l C o n t r o l l e r M o d u l e
2 2 1
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