NEC 12.2 Clock Output Control Circuit Configuration

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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