NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 125

• 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 42: x32 SDRAM interconnect
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A21
A22
A23
BCLK
VCC
D31-D16
D15-D00
D31-D00
NS7520 signal
x16 SDRAM configuration
Table 43 identifies the interconnect between the NS7520 and SDRAM when SDRAM is
used in an x16 configuration. An x16 SDRAM configuration typically is constructed
using one x16 SDRAM component.
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
BA
CLK
CKE
D15-D00 - Device 1
D15-D00 - Device 2
2x16M SDRAM signal components
16 Mb (1Mx16)
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A11
BA0
BA1
CLK
CKE
D15-D00 - Device 1
D15-D00 - Device 2
64Mb (4Mx16)
w w w . d i g i e m b e d d e d . c o m
D31-D00
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
BA1
BA0
CLK
CKE
1x32 SDRAM component
64Mb (2Mx32)
M e m o r y C o n t r o l l e r M o d u l e
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A11
BA0
BA1
CLK
CKE
D31-D00
128Mb (4Mx32)
1 1 3