ABB AC 800F

6 Functional Description of the Ethernet Modules
6-31
6.6.2 Hardware structure
The 10BaseT module EI 803F comprises the following hardware components:
• LAN controller/coprocessor, adapted to Intel RISC-CPU
32-bit data bus, 32-bit address bus, DMA, interrupt
• Serial interface/Manchester encoder for generating a serial bit stream
• EEPROM for configuration data
• HEX coding switch for configuring IP address / redundancy link
• Electrical isolation for TP interface
• ESD protector on RJ45 socket
• Isolator for electrical isolation of the bus signals
• Buffer battery holder with polarity reversal protection and monitoring circuit
• RJ45 connector
Block diagram
Fig. 6-15 10BaseT module block diagram
Connector pin assignment
RJ45 socket
Fig. 6-16 10BaseT module connector pin assignment