Specifications

I-40 EPSON S1C62N82 TECHNICAL HARDWARE

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Output Ports)

Special output port data (0F4H D2)

This bit will not affect the melody (MO) or envelope (ENV)

signal at Rl2. R12 register is a general purpose register

which can be read and written.

When 1 is written: No effect at R12

When 0 is written: No effect at R12

Reading: Valid

Special output port data (0F4H D0)

Controls the FOUT (clock) output.

When 1 is written: Clock output

When 0 is written: Low level (DC) output

Reading: Valid

FOUT output can be controlled by writing data to R10. After

an initial reset, this register is set to 0.

Figure 4.4.3 shows the output waveform for FOUT output.

R12 (when MO or ENV is

selected)

R10 (when FOUT is

selected)

R10 Register

FOUT output

waveform

Fig. 4.4.3

FOUT output waveform

Note

A hazard may occur when the FOUT signal is turned on or off.