SENA HD132x Series - Manual (Page 13)

HD132x Series User Manual
13
3.3 Firmware Structure
The HelloDevice Firmware resides in the program memory of microprocessor. The firmware includes a
TCP/IP stack conforming to the Open System Interconnection (OSI) requirements for an Internet
connection, and the serial communications interface for connection to the user device.
Layer HelloDevice Support
7 Application RS232 Communication Interface System
Management
DHCP
6 Presentation
5 Session
4 Transport
3 Network TCP UDP
2 Data link IP / ICMP ARP
1 Physical layer Ethernet (IEEE802.3)
Table 3.2 OSI 7 Layers and HD132x Firmware