CN8478 Datasheet, PDF (39/221 Pages) Conexant Systems, Inc – Multichannel Synchronous Communications Controller (MUSYCC)

2
2.0 Host Interface
MUSYCC’s host interface performs the following major functions:
• Transfers data between the serial interface and shared memory over the
PCI bus
• Bridges system host processors to the devices connected to the EBUS
• Stores configuration state information
Figure 2-1 illustrates the host interface block diagram.
Figure 2-1. Host Interface Functional Block Diagram
PCI
Bus
8478_005
Clock
Control
Data
Interrupt
Host
Interface
Device
Configuration
Registers
PCI
Interface
PCI
Configuration
Space
(Function 0)
PCI
Configuration
Space
(Function 1)
Tx Control
Tx Data
Rx Control
Rx Data
Interrupts
Serial
Interface
Clock
Control
Data
Interrupt
Local
Expansion
Bus (EBUS)
100660E
Conexant
2-1