NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 325
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: 325 of 338
- Download datasheet (2Mb)
External use of TA_ and TEA_
Workaround
Use the software workaround for the mode you are using:
Interrupt mode:
DMA mode:
Note these issues for TA_ and TEA_:
Workaround
The TA_ signal in the NS7520 must be synchronized with BCLK, and last for one BCLK.
The internal TA synchronizer settings must be as shown:
Both TA_ and TEA_ should have external 820 ohm pullups.
Note:
For all but the first character, check the TXEMPTY bit (D00 in the Serial
Status Register A).
–
–
You should not have a problem with this issue when working in DMA mode.
TEA_: Externally generated TEA_ burst cycles can cause failures.
TA_: External TA_ can be used only in single cycle mode, to terminate chip
selects with 8, 16, and 32 bus widths.
Chip Select Option Register B: SYNC — 1 stage (01)
System Control register — BSYNC: 1 stage (00)
The external device never drives TEA_.
If the TXEMPTY bit is not set, write the next character within 1 character
time.
If the TXEMPTY bit is set, wait 1 character time plus 1 bit time before
writing the next character.
w w w . d i g i e m b e d d e d . c o m
N S 7 5 2 0 E r r a t a
3 1 3
Related parts for NS7520B-1-I46
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
KIT JUMP START ME 9210 NET+OS 7
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
KIT JUMP START ME 9210 LINUX
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
KIT INTEGRATION ME MOD S MODELS
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
KIT DEV SP ADPT NO RAVEN
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
KIT DEV SP ADAPTER
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
DIGI CONNECT 4MB FLASH 8MB RAM
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
12VDC EXT TEMP PWR SUP/NO PLUG
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
IC ARM MICROPROCESSOR 177BGA
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
DIGI CONNECT 4MB FLASH 8MB RAM
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
ME 8MB SDRAM 2MB FLASH SINGLE
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
ME 8MB SDRAM 2MB FLASH SINGLE
Manufacturer:
Digi International
Datasheet:
Part Number:
Description:
MODULE 9P 8MB SDRAM 4MB FLASH
Manufacturer:
Digi International/Maxstream
Datasheet: