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Si block diagram -2 – Motorola MPC8260 User Manual

Page 456

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14-2

MPC8260 PowerQUICC II UserÕs Manual

MOTOROLA

Part IV. Communications Processor Module

Figure 14-1. SI Block Diagram

If the time-slot assigner (TSA) is not used as intended, it can be used to generate complex
wave forms on dedicated output pins. For instance, it can program these pins to implement
stepper motor control or variable-duty cycle and period control on-the-ßy.

Time-Slot

Assigner (TSA)

R clocks

T clocks

R clocks

T clocks

R sync

T sync

TDM A, B, C, D

Pins

Strobes

Route

SI RAM

Tx/Rx

RAM

Control

Mode

Register

TDM A, B, C, D

Tx

TX

Command

Register

Status

Register

SMC1 SMC2 SCC1 SCC2 SCC3 SCC4 MII1/

MII2/

MUX

MII3

To: SMC1 SMC2 SCC1 SCC2 SCC3 SCC4 FCC1 FCC2 FCC3

Multi-Channel

Peripheral Bus

Nonmultiplexed Serial Interface (NMSI) Pins

Channel #

Controllers

Shadow

Register

Clock

Route

RAM

Address

Rx

Rx

UTOPIA UTOPIA

16

8

CPM Mux

Note:
The CPM mux and the MCCs are not part of the SI.

MUX

MUX

MUX

MUX

MUX

MUX

MUX

MUX

(MCCs)

(See their respective chapters for details.)