NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 108

• 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

9 6
M E M m o d u l e c o n f i g u r a t i o n
Table 37: Chip Select Base Address register bit definition
D00
Bits
R/W
Access
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
V
Mnemonic
0
Reset
Valid bit
Enables the chip select. When set to 1, the
memory controller uses the fields in the Chip
Select Base Address and Chip Select Option
registers to control the behavior of the peripheral
memory cycles.
Note:
Description
It is important that you set the V bit
last, after all other bits in the MMCR,
Chip Select Base Address, and both
Chip Select Option registers are set.