User’s Manual U13850EJ4V0UM
369
CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO)
13.1 Function
The real-time output function transfers preset data to real-time output buffer registers (RTBL, RTBH), and then
transfers this data with hardware to an external device via the output latches, upon the occurrence of an external
interrupt or external trigger. The pins through which the data is output to an external device constitute a port called a
real-time output port.
Because RTO can output signals without jitter, it is suitable for controlling a stepping motor.
The real-time output port can be set in port mode or real-time output port mode in 1-bit units.
The block diagram of RTO is shown below.
Figure 13-1. Block Diagram of RTO
Internal bus
Output latch
RTP7
RTP6
RTP5
RTP4
RTP3
RTP2
RTP1
RTP0
RTPOE
RTPEG
BYTE
EXTR
RTPTRG
Output trigger
controller
INTTM4
INTTM5
Real-time output port
control register (RTPC)
4
Real-time output
buffer register, higher
4 bits (RTBH)
Real-time output
buffer register, lower
4 bits (RTBL)
Real-time output
port mode
register (RTPM)
Содержание MPD703030A
Страница 2: ...User s Manual U13850EJ4V0UM 2 MEMO ...
Страница 514: ...User s Manual U13850EJ4V0UM 514 MEMO ...