NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 127

• Manufacturer Part Number: NS7520B-1-C36
• Description: IC ARM MICROPROCESSOR 177BGA
• Manufacturer: Digi International
• Series: NET+ARM®r

Specifications of NS7520B-1-C36

• 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

Table 43: x16 SDRAM interconnect
x8 SDRAM configurations
Table 44 identifies the interconnect between the NS7520 and SDRAM when SDRAM is
used in an x8 configuration. An x8 SDRAM configuration typically is constructed using
one x8 SDRAM component.
Table 44: x8 SDRAM interconnect
A22
BCLK
VCC
D31-D16
CS/RAS_
CAS3_
CAS2_
CAS1_
CAS0_
BE3_
BE2_
BE1_
BE0_
A0
A1
A2
NS7520 signal
NS7520 signal
CLK
CKE
D15-D00
CS[4:0]_
RAS_
CAS_
WE_
A10/AP
DQM_
N/A
N/A
N/A
A0
A1
A2
16M SDRAM signal
16M SDRAM signal
w w w . d i g i e m b e d d e d . c o m
BA1
CLK
CKE
D15-D00
CS[4:0]_
RAS_
CAS_
WE_
A10/AP
DQM_
N/A
N/A
N/A
A0
A1
A2
64M SDRAM signal
64M SDRAM signal
M e m o r y C o n t r o l l e r M o d u l e
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