3.2.2.1.1 Notes on Output Multiplexing
Table 3-28 lists the output signal multiplexing and control signals for selecting the desired functionality for each pad.
- The pads default to the signal defined by the "Default Function" in Table 3-28.
- The CTRL x columns in Table 3-28 contain a value of type x[y] which indicates the control register PINMMRx, bit y. It indicates the multiplexing control register and the bit that must be set in order to select the corresponding functionality to be output on any particular pad.
- For example, consider the multiplexing on pin H3 for the 337-GWT package:
337
GWT
BALL |
DEFAULT FUNCTION |
CTRL1 |
OPTION 2 |
CTRL2 |
OPTION 3 |
CTRL3 |
OPTION 4 |
CTRL4 |
OPTION 5 |
CTRL5 |
OPTION 6 |
CTRL6 |
H3 |
GIOA[6] |
19[24] |
|
|
N2HET2[4] |
19[26] |
|
|
|
|
ePWM1B |
19[29] |
- When GIOA[6] is configured as an output pin in the GIO module control register, then the programmed output level appears on pin H3 by default. The PINMMR19[24] is set by default to indicate that the GIOA[6] signal is selected to be output.
- If the application must output the N2HET2[4] signal on pin H3, it must clear PINMMR19[24] and set PINMMR19[26].
- Note that the pin is connected as input to both the GIO and N2HET2 modules. That is, there is no input multiplexing on this pin.
- The base address of the IOMM module starts at 0xFFFF_1C00. The Output mux control registers with the first register PINMMR0 starts at the offset address 0x110 within the IOMM module.