NEC PD78056F User Manual

The real-time output port consists of the following hardware.

Item

Configuration

Register

Real-time output buffer register (RTBL, RTBH)

Control register

Port mode register 12 (PM12)

Real-time output port mode register (RTPM)

Real-time output port control register (RTPC)

Internal Bus

Real-time Output Port
Control Register

EXTR

BYTE

Output Trigger
Control Circuit

Real-time Output
Buffer Register
Higher 4 Bits
       (RTBH)

Real-time Output
Buffer Register
Lower 4 Bits
       (RTBL)

Output Latch

P120

P127

Real-time Output port
Mode Register (RTPM)

INTP2

INTTM1

INTTM2

Port Mode
Register 12
   (PM12)