CN8478 Datasheet, PDF (71/221 Pages) Conexant Systems, Inc – Multichannel Synchronous Communications Controller (MUSYCC)

4
4.0 Serial Interface
Each serial interface consists of Serial Port Interfaces (SERI), Bit Level
Processors (BLP), Direct Memory Access Controllers (DMAC), and an Interrupt
Controller (INTC). A separate set of SERI, BLP, and DMAC services receive
channels and transmit channels independently. A single INTC is shared by the
receive and transmit BLP. Figure 4-1 illustrates the serial port/host interface.
Figure 4-1. Serial Interface Functional Block Diagram, Channel Group 0
8478_013
Rx Control
Rx Data
Interrupt
Tx Data
Tx Control
Serial Interface
Channel Group 0
Rx DMAC
Rx
Bit Level
Processor
Interrupt
Controller
Rx Event
Tx Event
Tx DMAC
Tx
Bit Level
Processor
Rx
Po r t
Interface
Clock
Synchronization
Data
Out-of-Frame
Status
Tx
Po r t
Interface
Clock
Synchronization
Data
NOTE(S):
1. Channel Groups 1, 2, 3, 4, 5, 6, and 7, when supported, are identical to Group 0.
2. Bt8478 supports Channel Groups 0 through 7.
3. Bt8474 supports Channel Groups 0, 1, 2, and 3.
4. Bt8472 supports Channel Groups 0 and 1.
100660E
Conexant
4-1