Emerson PMT1, PME1 Serial I/O, Communications Processor Module, Acronym Register Block Name

Section 5

Serial I/O

The PmT1 and PmE1 module has six TTL serial ports that are supplied by the MPC860P Pow- erQUICC™. The MPC860P supports the serial ports with the following features:

•Communications Processor Module (CPM), which includes a RISC controller, 224 buffer descriptors, continuous mode transmission and reception on all serial channels, dual- port RAM, fourteen serial DMA (SDMA) channels, and NMSI mode (each serial channel can have its own pins)

•Four serial communication controllers (SCCs)

•Two serial management controllers (SMCs) for the console and download serial ports

•Four baud rate generators that are independent (i.e., can be connected to any SCC or SMC), allow changes during operation, and have autobaud support

•Protocols in firmware for asynchronous/synchronous UARTs, HDLC, and SS7

For detailed descriptions of the MPC860P features and examples of how to implement them, refer to the MPC860 PowerQUICC™ User’s Manual.

THE COMMUNICATIONS PROCESSOR MODULE

The physical base address of the MPC860P is FF00,000016. The following table shows the register block map for the CPM portion of the MPC860P. Please refer to the MPC860 Power- QUICC™ User’s Manual for descriptions of the registers in each register block.

Table 5-1:MPC860P CPM Register Block Map

Physical Address (hex):	Acronym:	Register Block Name:
FF00,0930	—	CPM Interrupt Control
FF00,0950	—	Input/Output Port
FF00,0980	—	CPM Timers
FF00,09C0	—	Communication Processor
FF00,09F0	BRG	Baud Rate Generators
FF00,0A00	SCC1	Serial Communications Controller 1
FF00,0A20	SCC2	Serial Communications Controller 2
FF00,0A40	SCC3	Serial Communications Controller 3
FF00,0A60	SCC4	Serial Communications Controller 4
FF00,0A82	SMC1	Serial Management Controller 1
FF00,0A9	SMC2	Serial Management Controller 2
FF00,0A82	—	reserved
FF00,0AE0	SI	Serial Interface

10002367-02 PmT1 and PmE1 User’s Manual

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