Siemens QUADLOG - Cpu; CAI Block Diagram

Circuit Description SDQLCAI-1
4-2 May 2002
4.4 CPU
There are two central processing units (CPUs) to provide extensive coverage of CPU faults. Both CPUs
read the input signals independently and compare the results. If either side detects a data mismatch, an
error is reported.
Figure 4–1 CAI Block Diagram