C508_01 Datasheet, PDF (157/267 Pages) Infineon Technologies AG – 8-Bit CMOS Microcontroller

C508
On-Chip Peripheral Components
2) _{Idle state is also entered when a “wrong follower” is detected (if bit BCON.7 = BCEM is set). When idle state}
is entered, the BCERR flag is always set. Idle state can only be left when the BCERR flag is reset by software.
Two tables are available for “rotate left” direction. The first table is identical to the one in
C504 which has a 60° phase shift. It is selected if bit BCTSEL of SFR COTRAP is
cleared. The second table has 0° phase shift, and it is selected if bit BCTSEL is set. After
reset, the first table is selected by default.
This option is provided as a feature so that a wider range of motors can be operated at
optimum performance.
In block commutation mode, any signal transition at INT0-2 generates a capture pulse
for CAPCOM channel 0 (CCH0/CCL0), independently from the selected INT0-2 signal
transition type as defined in the SFR TCON (for INT0 and INT1) and SFR T2CON (for
INT2).
User’s Manual
6-92
2001-05