C508_01 Datasheet, PDF (184/267 Pages) Infineon Technologies AG – 8-Bit CMOS Microcontroller

C508
On-Chip Peripheral Components
1. RI = 0, and
2. Either SM2 = 0 or the received 9^th data bit = 1
If either of these conditions is not met, the received frame is irretrievably lost, and RI is
not set. If both conditions are met, the received 9^th data bit goes into RB8, and the first
eight data bits go into SBUF. One bit time later, whether the above conditions were met
or not, the unit resumes looking for a 1-to-0 transition at the RxD input.
Note that the value of the received stop bit is irrelevant to SBUF, RB8 or RI.
User’s Manual
6-119
2001-05