參數(shù)資料
型號: NS7520B-1-C36
廠商: Digi International
文件頁數(shù): 56/68頁
文件大小: 0K
描述: IC ARM MICROPROCESSOR 177BGA
標(biāo)準(zhǔn)包裝: 160
系列: NET+ARM®
應(yīng)用: 網(wǎng)絡(luò)處理器
核心處理器: ARM7
程序存儲器類型: 外部程序存儲器
RAM 容量: 外部
接口: EBI/EMI,以太網(wǎng),DMA,SPI,UART
輸入/輸出數(shù): 16
電源電壓: 1.4 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 177-LFBGA
包裝: 托盤
供應(yīng)商設(shè)備封裝: 177-BGA(13x13)
Key Fe ature s
2
NS 75 20 Da ta shee t
03 /2 00 6
Key Features
This table lists the key features of the NS7520.
CPU core
Integrated 10/100 Ethernet MAC
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
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
detection
512-byte transmit FIFO, 2 Kbyte receive FIFO
Intelligent receive-side buffer selection
13-Channel DMA controller
Programmable Timers
Two channels dedicated to Ethernet transmit
and receive
Four channels dedicated to two serial modules’
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.
Three channels available for memory-to-memory
transfers
Flexible buffer management
Two independent timers (2μs–20.7 hours)
Watchdog timer (interrupt or reset on expiration)
Programmable bus monitor or timer
General purpose I/O pins
Operating frequency
16 programmable GPIO interface pins
4 pins programmable with level-sensitive
interrupt
36, 46, or 55 MHz internal clock operation from
18.432 MHz crystal
fMAX = 36, 46, or 55 (grade–dependent)
System clock source by external quartz crystal
or crystal oscillator, or clock signal
Programmable PLL, which allows a range of
operating frequencies from 10 to fMAX
Maximum operating frequency from external
clock or using PLL multiplication fMAX
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