NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 6

• 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

This table lists the key features of the NS7520.
2
Key Features
K e y F e a t u r e s
CPU core
13-Channel DMA controller
General purpose I/O pins
Three channels available for memory-to-memory
and receive
transmit and receive
Four channels for external peripherals. Only two
channels — either 3 and 5 or 4 and 6 — can be
configured at one time.
transfers
interrupt
ARM7TDMI 32-bit RISC processor
32-bit internal bus
32-bit ARM and 16-bit Thumb mode
15 general purpose 32-bit registers
32-bit program counter (PC) and status register
Five supervisor modes, one user mode
Two channels dedicated to Ethernet transmit
Four channels dedicated to two serial modules’
Flexible buffer management
16 programmable GPIO interface pins
4 pins programmable with level-sensitive
N S 7 5 2 0 D a t a s h e e t
0 3 / 2 0 0 6
Integrated 10/100 Ethernet MAC
Programmable Timers
Operating frequency
detection
18.432 MHz crystal
or crystal oscillator, or clock signal
operating frequencies from 10 to f
clock or using PLL multiplication f
10/100 Mbps MII-based PHY interface
10 Mbps ENDEC interface
TP-PMD and fiber-PMD device support
Full-duplex and half-duplex modes
Optional 4B/5B coding
Station, broadcast, and multicast address
512-byte transmit FIFO, 2 Kbyte receive FIFO
Intelligent receive-side buffer selection
Two independent timers (2μs–20.7 hours)
Watchdog timer (interrupt or reset on expiration)
Programmable bus monitor or timer
36, 46, or 55 MHz internal clock operation from
f
System clock source by external quartz crystal
Programmable PLL, which allows a range of
Maximum operating frequency from external
MAX
= 36, 46, or 55 (grade–dependent)
MAX
MAX