What are the differences between bridge and configuration mode in the HDLC controller?
A1. Configuration mode allows only the local bus to control and monitor the chip while the HDLC packet data is transferred through the PCI bus. Data cannot be passed from the local bus to the PCI bus in this mode. Bridge mode allows the host on the PCI bus to access the local bus. The PCI bus is used to control and monitor the chip and transfer the packet data. Data can be mapped from the PCI bus to the local bus.