SBOS487B June 2009 – March 2020 PGA280
Special function pin designation: Set to 1 for activation.
OSCout: Internal oscillator connected to pin GPIO6 for output (GPIO6 configured as an output).
SYNCin: External connection for external oscillator input to pin GPIO6 (GPIO6 configured as an input).
BUFAout: Pin GPIO5 indicates a buffer active condition (if configured as an output). The BUFA output signal is active high by default, but can be inverted to active low by BUFA Pol.
BUFTin: The current buffer can be triggered externally by pin GPIO4, if configured as an input. The low-to-high edge of a pulse starts the buffer with a delay of three to four clock cycles. If held high, the buffer [BUFA] remains active. The active time is extended by a minimum of three to four clock cycles plus the time set with FLAGTIM.
EFout: A logic OR combination of error bits; see Register 10. This flag can control GPIO3 if this pin is configured as an output and EFout = 1.
MUX2 to MUX0: If the GPIO pins are configured as outputs and these bits are set to 1, the GPIO pins are controlled from Register 0 (if MUX-D = 0).