2 clock output control circuit configuration – NEC uPD78056Y User Manual

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CHAPTER 12 CLOCK OUTPUT CONTROL CIRCUIT

Internal Bus

f

XX

f

XX

/2

f

XX

/2

2

f

XX

/2

3

f

XX

/2

4

f

XX

/2

5

f

XX

/2

6

f

XX

/2

7

f

XT

CLOE TCL03 TCL02 TCL01 TCL00

P35

Output Latch

Synchronizing

Circuit

4

PM35

Selector

Timer Clock Select Register 0

Port Mode Register 3

PCL /P35

12.2 Clock Output Control Circuit Configuration

The clock output control circuit consists of the following hardware.

Table 12-1. Clock Output Control Circuit Configuration

Item

Configuration

Timer clock select register 0 (TCL0)

Port mode register 3 (PM3)

Figure 12-2. Clock Output Control Circuit Block Diagram

Control register

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