AN2700 Freescale Semiconductor / Motorola, AN2700 Datasheet - Page 9

• Manufacturer Part Number: AN2700
• Description: Basic Web Server Development with MC9S12NE64 and CMX-MicroNet TCP/IP Stack
• Manufacturer: Freescale Semiconductor / Motorola

CMX Stack Overview
This section includes:
CMX Introduction
CMX-MicroNet is a TCP/IP stack implementation that is tailored for 8-bit and 16-bit embedded
processors. Other CMX features include:
To reduce the CMX-MicroNet code footprint in FLASH, ROM, and RAM, CMX-MicroNet has made several
TCP/IP stack design choices that deviate from TCP/IP’s RFC standards while still maintaining high
TCP/IP stack functionality. These include:
Freescale Semiconductor
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
CMX introduction
Freescale Semiconductor low-level Ethernet drivers
CMX-MicroNet installation and project organization
CMX-MicroNet CodeWarrior project
CMX-MicroNet TCP/IP stack API
Compatible with CodeWarrior tools
Works with MCUs with low RAM/ROM resources
Written entirely in standard C code
Allows web pages to contain CGI calls
Allows sending email
Can serve Java applets
Runs stand-alone or with a real-time operating system (RTOS)
Supports as many as 16 sockets (mixed or matched with TCP or UDP)
No support for IEEE 802.3 type packets
No IP option support
No support to handle fragmented packets
ICMP supports only echo reply
Ignores all TCP options
TCP respects other side’s window, but uses a fixed window itself
Every TCP packet must be acknowledged with an ACK before another one can be received
Basic Web Server with MC9S12NE64 and CMX-MicroNet TCP/IP Stack, Rev. 0.3
CMX Stack Overview
9