Topic : MC56001 Documentation Author : JAY Software Version : 1.0 (19/11/1997) Subject : Programming/Assembler Nodes : 152 Index Size : 4106 HCP-Version : 4 Compiled on : Atari @charset : atarist @lang : @default : @help : @options : -i +y +z -t4 @width : 100 View Ref-FileClock Source Direction (SCKD) CRB Bit 5: SCKD selects the source of the clock signal used to clock the transmit shift register in the asynchronous mode and both the transmit shift register and the receive shift register in the synchronous mode. When SCKD is set, the internal clock source becomes the bit clock for the transmit shift register and word length divider and is the output on the SCK pin. When SCKD is cleared, the clock source is external; the internal clock generator is disconnected from the SCK pin, and an external clock source may drive this pin. Hardware and software reset clear SCKD.