Datasheet

Section 15 Serial Communication Interface (SCI, IrDA)
R01UH0310EJ0500 Rev. 5.00 Page 937 of 1384
Sep 25, 2012
H8S/2426, H8S/2426R, H8S/2424 Group
D0 D1 D2 D3 D4 D5 D6 D7 Dp DE Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
(DE)
Ds D0 D1 D2 D3 D4Ds
Transfer
frame n+1
Retransferred frame
nth transfer frame
RDRF
[1]
PER
[2]
[3]
[4]
Figure 15.29 Retransfer Operation in SCI Receive Mode
Initialization
Read RDR and clear
RDRF flag in SSR to 0
Clear RE bit to 0
Start reception
Start
Error processing
No
No
No
Yes
Yes
ORER = 0 and
PER = 0
RDRF = 1?
All data received?
Yes
Figure 15.30 Example of Reception Processing Flow