參數(shù)資料
型號: ENC424J600-I/ML
廠商: Microchip Technology
文件頁數(shù): 136/168頁
文件大小: 0K
描述: IC ETHERNET CTRLR W/SPI 44-QFN
視頻文件: Fast 100 Mbps Ethernet PICtail Plus Overview
標準包裝: 45
控制器類型: 以太網(wǎng)控制器(IEEE 802.3)
接口: SPI
電源電壓: 3 V ~ 3.6 V
電流 - 電源: 96mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-VQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 44-QFN(8x8)
包裝: 管件
產(chǎn)品目錄頁面: 684 (CN2011-ZH PDF)
配用: AC164132-ND - BOARD DAUGHTER PICTAIL ETHERNET
2010 Microchip Technology Inc.
DS39935C-page 5
ENC424J600/624J600
1.0
DEVICE OVERVIEW
This document contains device-specific information for
the following devices:
ENC424J600
ENC624J600
The ENC424J600 and ENC624J600 are stand-alone,
Fast Ethernet controllers with an industry standard
Serial Peripheral Interface (SPI) or a flexible parallel
interface. They are designed to serve as an Ethernet
network interface for any microcontroller equipped with
SPI or a standard parallel port.
ENC424J600/624J600 devices meet all of the
IEEE 802.3 specifications applicable to 10Base-T and
100Base-TX
Ethernet,
including
many
optional
clauses, such as auto-negotiation. They incorporate a
number of packet filtering schemes to limit incoming
packets. They also provide an internal, 16-bit wide
DMA for fast data throughput and support for hardware
IP checksum calculations.
For applications that require the security and authenti-
cation features of SSL, TLS and other protocols related
to cryptography, a block of security engines is provided.
The engines perform RSA, Diffie-Hellman, AES, MD5
and SHA-1 algorithm computations, allowing reduced
code size, faster connection establishment and
throughput, and reduced firmware development effort.
Communication
with
the
microcontroller
is
implemented via the SPI or parallel interface, with data
rates ranging from 14 Mbit/s (SPI) to 160 Mbit/s
(demultiplexed, 16-bit parallel interface). Dedicated
pins are used for LED link and activity indication and for
transmit/receive/DMA interrupts.
A generous 24-Kbyte on-chip RAM buffer is available
for TX and RX operations. It may also be used by the
host microcontroller for general purpose storage.
Communication protocols, such as TCP, can use this
memory for saving data which may need to be
retransmitted.
For easy end product manufacturability, each
ENC624J600 family device is preprogrammed with a
unique nonvolatile MAC address. In most cases, this
allows the end device to avoid a serialized
programming step.
The
only
functional
difference
between
the
ENC424J600 (44-pin) and ENC624J600 (64-pin)
devices are the number of parallel interface options
they support. These differences, along with a summary
of their common features, are provided in Table 1-1. A
general block diagram for the devices is shown in
A list of the pin features, sorted by function, is
presented in Table 1-2.
TABLE 1-1:
DEVICE FEATURES FOR ENC424J600/624J600
Feature
ENC424J600
ENC624J600
Pin Count
44
64
Ethernet Operating Speed
10/100 Mbps (auto-negotiate, auto-sense or manual)
Ethernet Duplex Modes
Half and Full (auto-negotiate and manual)
Ethernet Flow Control
Pause and Backpressure (auto and manual)
Buffer Memory (bytes)
24K (organized as 12K word x 16)
Internal Interrupt Sources
11 (mappable to a single external interrupt flag)
Serial Host Interface (SPI)
Yes
Parallel Host Interface:
Operating modes
2
8
Muliplexed,
8-bit
Yes
16-bit
No
Yes
Demultiplexed, 8-bit
No
Yes
16-bit
No
Yes
Cryptographic Security Options:
AES, 128/192/256-bit
Yes
MD5/SHA-1
Yes
Modular Exponentiation, 1024-bit
Yes
Receive Filter Options
Accept or reject packets with CRC match/mismatch, runt error collect
or reject, Unicast, Not-Me Unicast, Multicast, Broadcast,
Magic Packet, Pattern Table and Hash Table
Packages
44-Pin TQFP, QFN
64-Pin TQFP
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