Shi Operation During Stop - Motorola DSP56009 User Manual

5.6.5

SHI Operation During Stop

The SHI operation cannot continue when the DSP is in the Stop state, since no DSP
clocks are active. While the DSP is in the Stop state, the SHI will remain in the
individual reset state.
While in the individual reset state:
• SHI input pins are inhibited.
• Output and bidirectional pins are disabled (high impedance).
• The HCSR status bits and the transmit/receive paths are reset to the same
state produced by hardware reset or software reset.
• The HCSR and HCKR control bits are not affected.
Note: Motorola recommends that the SHI be disabled before entering the Stop state.
MOTOROLA DSP56009 User's Manual
Serial Host Interface
SHI Programming Considerations
5-31