NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 24

• 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

System bus interface
1 2
P i n o u t d e t a i l t a b l e s a n d s i g n a l d e s c r i p t i o n s
Table 2: System bus interface pinout
BCLK
External bus
ADDR27
ADDR26
External bus
ADDR25
ADDR24
ADDR23
ADDR22
ADDR21
ADDR20
ADDR19
ADDR18
ADDR17
ADDR16
ADDR15
ADDR14
ADDR13
ADDR12
ADDR11
ADDR10
ADDR9
ADDR8
ADDR7
Symbol
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
Other
CS0OE_
CS0WE_
A6
N10 U
P10 U
M10 U
R10 U
N9 U
R9 U
M9 U
N8 U
P8 U
M7 U
R7U
N7 U
R6 U
M6 U
P6 U
N6 U
M5 U
P5 U
N5 U
R4 U
R3 U
Pin
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
8
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
OD
Synchronous bus clock
External bus
Addr bit 27
Addr bit 26
External bus
Remainder of address bus (through ADDR0)
Description
Other
Logical AND of CS0_ and
OE_
Logical AND of CS0_ and
WE_