5 error interrupt generation timing – NEC PD78F9488 User Manual
Page 285
CHAPTER 15 REMOTE CONTROLLER RECEIVER (
µ
PD789489, 78F9489 ONLY)
User’s Manual U15331EJ4V1UD
285
15.4.5 Error interrupt generation timing
After the guide pulse has been detected normally, the INTRERR signal is generated under any of the following
conditions.
• Counter < RMDLS at the rising edge of RIN
• RMDLL ≤ counter and counter after RMDLL < RMER at the rising edge of RIN
• Counter < RMDH0S at the falling edge of RIN
• RMDH0L ≤ counter < RMDH1S at the falling edge of RIN
• Register changes so that RMDH1L ≤ counter while RIN is at high level
The INTRERR signal is not generated until the guide pulse is detected.
Once the INTRERR signal has been generated, it will not be generated again until the next guide pulse is detected.
The generation timing of the INTRERR signal is shown in Figure 15-7.