Real-Time Output Port Block Diagram; Real-Time Output Port Configuration - NEC PD78052 User Manual

20.2 Real-Time Output Port Configuration

The real-time output port consists of the following hardware.
Register
Control register
Real-time Output Port
Control Register
EXTR
BYTE
INTP2
Output Trigger
INTTM1
Control Circuit
INTTM2
478
CHAPTER 20 REAL-TIME OUTPUT PORT
Table 20-1. Real-time Output Port Configuration
Item
Real-time output buffer register (RTBL, RTBH)
Port mode register 12 (PM12)
Real-time output port mode register (RTPM)
Real-time output port control register (RTPC)
Figure 20-1. Real-time Output Port Block Diagram
Internal Bus
Real-time Output
Buffer Register
Higher 4 Bits
(RTBH)
Output Latch
P127
Configuration
Real-time Output
Buffer Register
Lower 4 Bits
(RTBL)
P120
Port Mode
Register 12
(PM12)
Real-time Output port
Mode Register (RTPM)