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

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CHAPTER 20 REAL-TIME OUTPUT PORT
20.2 Real-Time Output Port Configuration
The real-time output port consists of the following hardware.
Table 20-1. Real-time Output Port Configuration
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)
Figure 20-1. Real-time Output Port Block Diagram
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)