NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 144
![no-image](/images/manufacturer_photos/0/1/193/digi_international_sml.jpg)
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: 144 of 338
- Download datasheet (2Mb)
1 3 2
D M A c h a n n e l a s s i g n m e n t s
DMA channel assignments
Buffer descriptor field definitions
Table 48: Buffer descriptor field definitions
Any of the 13 channels in the DMA controller can be configured for memory-to-
memory mode. Those channels assigned to a peripheral (see Table 49, “DMA channel
assignments,” on page 133) can be configured for fly-by mode.
Source buffer pointer/Buffer
pointer
Status
Buffer length: Peripheral-to-
memory
Buffer length: Memory-to-
peripheral
Buffer length: Memory-to-
memory
Destination buffer pointer
Field
N S 7 5 2 0 H a r d w a r e R e f e r e n c e , R e v G 9 / 2 0 0 7
The source buffer pointer field identifies the starting location of the data
buffer. The source buffer pointer can start on any byte boundary for fly-by
memory-to-peripheral operations. The source buffer must be aligned on
32-bit boundaries to support peripheral-to-memory operations.
Peripherals can use the 16-bit status field to store transmit and receive
status words. The status field is updated when the current descriptor is
completed.
In fly-by peripheral-to-memory operations, indicates the maximum
number of bytes available in the receive buffer pointed to by the source
buffer pointer. After filling the receive buffer with peripheral data, the
DMA controller updates this field with the actual receive data byte count.
In fly-by memory-to-peripheral operations, indicates the number of bytes
to move to the peripheral device, pointed to by the source address pointer.
After completing the transfer, the DMA controller updates this field in a
transmit buffer descriptor with the actual data byte count (useful during
error conditions).
Indicates the number of bytes to move between the source and destination
locations. After completing a memory-to-memory transfer, the DMA
controller updates this field with the remaining data byte count (useful
during error conditions).
Used only when the DMA channel is configured for memory-to-memory
operations. The destination address pointer must start on the same byte
boundary as the source address pointer. If the source and destination byte
boundaries are different, the data operand size must be set for 8-bit
operations (see the SIZE field in "DMA Control register," beginning on
page 136).
Description
Related parts for NS7520B-1-I46
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![NS7520B-1-C36](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
![NS7520B-1-C55](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
![NS7520B-1-I55](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
![DC-ME-9210-NET](/photos/9/21/92187/dc-me-9210-net_tmb.jpg)
Part Number:
Description:
KIT JUMP START ME 9210 NET+OS 7
Manufacturer:
Digi International
Datasheet:
![DC-ME-9210-LX](/photos/9/21/92180/dc-me-9210-lx_tmb.jpg)
Part Number:
Description:
KIT JUMP START ME 9210 LINUX
Manufacturer:
Digi International
Datasheet:
![DC-ME-01T-KT](/photos/9/21/92181/dc-me-01t-kt_tmb.jpg)
Part Number:
Description:
KIT INTEGRATION ME MOD S MODELS
Manufacturer:
Digi International
Datasheet:
![DC-SP-01-GN-NR](/photos/9/5/90554/dc-sp-01-gn-nr_tmb.jpg)
Part Number:
Description:
KIT DEV SP ADPT NO RAVEN
Manufacturer:
Digi International
Datasheet:
![DC-SP-01-GN](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
KIT DEV SP ADAPTER
Manufacturer:
Digi International
Datasheet:
![DC-ME4-01T-S-10](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
DIGI CONNECT 4MB FLASH 8MB RAM
Manufacturer:
Digi International
Datasheet:
![76000736](/photos/8/93/89319/76000736_tmb.jpg)
Part Number:
Description:
12VDC EXT TEMP PWR SUP/NO PLUG
Manufacturer:
Digi International
Datasheet:
![NS7520B-1-C36](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
![DC-ME4-01T-S-10](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
DIGI CONNECT 4MB FLASH 8MB RAM
Manufacturer:
Digi International
Datasheet:
![DC-ME-01T-S](/photos/6/74/67461/dc-me-01t-c_dc-me-01t-s_dc-me4-01t-c_tmb.jpg)
Part Number:
Description:
ME 8MB SDRAM 2MB FLASH SINGLE
Manufacturer:
Digi International
Datasheet:
![DC-ME-01T-C](/images/manufacturer_photos/0/1/193/digi_international_tmb.jpg)
Part Number:
Description:
ME 8MB SDRAM 2MB FLASH SINGLE
Manufacturer:
Digi International
Datasheet:
![CC-9P-V502-C](/photos/6/74/67470/cc-9p-v502-c_tmb.jpg)
Part Number:
Description:
MODULE 9P 8MB SDRAM 4MB FLASH
Manufacturer:
Digi International/Maxstream
Datasheet: