NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 8
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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viii
C h a p t e r 8 : D M A M o d u l e
C h a p t e r 9 : E t h e r n e t M o d u l e
Peripheral page burst size ...........................................................124
DMA module ............................................................................128
DMA buffer descriptor ................................................................130
DMA channel assignments ............................................................132
DMA channel registers ................................................................133
Ethernet transfer considerations....................................................144
Ethernet transmitter considerations................................................145
Ethernet receiver considerations ...................................................145
External peripheral DMA support....................................................146
DMA controller reset ..................................................................148
Ethernet front-end (EFE) .............................................................150
External CAM filtering ................................................................153
MAC module ............................................................................154
DMA channel assignments ............................................................156
EFE configuration ......................................................................156
SDRAM read cycles..............................................................120
SDRAM write cycles .............................................................122
Fly-by operation transfers.....................................................128
Memory-to-memory operation ................................................129
Address map .....................................................................133
Buffer Descriptor Pointer register ...........................................136
DMA Control register ...........................................................136
DMA Status/Interrupt Enable register .......................................142
Signal description ...............................................................147
External DMA configuration ...................................................147
Memory-to-memory mode .....................................................147
Transmit and receive FIFOs ...................................................151
EFE transmit processing .......................................................151
EFE receive processing.........................................................151
Receive buffer descriptor selection .........................................152
MAC module block diagram ...................................................154
Ethernet General Control register (EGCR) bit definitions ................158
...............................................................................................127
....................................................................................149
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