Voyager 3000 User Guide
System Configurations
Single Shelf configuration
Figure 3-1 shows how a single shelf Voyager 3000 system is configured with an EMU. The system is set up with a device ID of 0 ensuring that it functions as a master device.
Figure 3-1 Single shelf EMU configuration
Dual shelf configuration
In a dual shelf configuration the Host connects to the I2C Master via RS232 serial link. Data from the second EMU is requested via the I2C bus and is passed to the Host via the RS232 link. The I2C Master has sufficient memory to store global system information and its own status information, the slave will store its own status information. An unique I2C address is assigned to each EMU with the address 0 reserved for the master. The EMU currently has provision to support up to eight shelves.
