56F8365_07 Datasheet, PDF (118/172 Pages) Freescale Semiconductor, Inc – 16-bit Digital Signal Controllers

6.5.6.5 RESET—Bit 11
This bit controls the pull-up resistors on the RESET pin.
6.5.6.6 IRQ—Bit 10
This bit controls the pull-up resistors on the IRQA and IRQB pins.
6.5.6.7 XBOOT—Bit 9
This bit controls the pull-up resistors on the EXTBOOT pin.
Note:
In this package, this input pin is double-bonded with the adjacent V_SS pin and this bit should be
changed to a 1 in order to reduce power consumption.
6.5.6.8 PWMB—Bit 8
This bit controls the pull-up resistors on the FAULTB0, FAULTB1, FAULTB2, and FAULTB3 pins.
6.5.6.9 PWMA0—Bit 7
This bit controls the pull-up resistors on the FAULTA0, FAULTA1, and FAULTA2 pins.
6.5.6.10 Reserved—Bit 6
This bit field is reserved or not implemented. It is read as 0 and cannot be modified by writing.
6.5.6.11 CTRL—Bit 5
This bit controls the pull-up resistors on the WR and RD pins.
6.5.6.12 Reserved—Bit 4
This bit field is reserved or not implemented. It is read as 0 and cannot be modified by writing.
6.5.6.13 JTAG—Bit 3
This bit controls the pull-up resistors on the TRST, TMS and TDI pins.
6.5.6.14 Reserved—Bit 2–0
This bit field is reserved or not implemented. It is read as 0 and cannot be modified by writing.
6.5.7 CLKO Select Register (SIM_CLKOSR)
The CLKO select register can be used to multiplex out any one of the clocks generated inside the clock
generation and SIM modules. The default value is SYS_CLK. This path has been optimized in order to
minimize any delay and clock duty cycle distortion. All other clocks primarily muxed out are for test
purposes only, and are subject to significant phase shift at high frequencies.
The upper four bits of the GPIOB register can function as GPIO, [A23:A20], or as additional clock output
signals. GPIO has priority and is enabled/disabled via the GPIOB_PER. If GPIOB[7:4] are programmed
to operate as peripheral outputs, then the choice between [A23:A20] and additional clock outputs is done
here in the CLKOSR. The default state is for the peripheral function of GPIOB[7:4] to be programmed as
56F8365 Technical Data, Rev. 7
118
Freescale Semiconductor
Preliminary