MSS GPIO
UG0331 User Guide Revision 15.0
577
16.4.3
MSS GPIO Definitions
16.4.4
Loopback Control Register
16.4.5
GPIO Input Source Select Control Register
Note:
The Libero automatically takes care of GPIO source input selection between current IOMUXCELL and
alternate IOMUXCELL.
Table 541 •
MSS_GPIO_DEF
Bit
Number Name
Reset
Value
Description
[31:4]
Reserved
0
Reserved
3
MSS_GPIO_31_24_DEF 0x1
Used to initialize GPIO bank [31:24] to 0 or 1 after reset.
2
MSS_GPIO_23_16_DEF 0x1
Used to initialize GPIO bank [23:16] to 0 or 1 after reset.
1
MSS_GPIO_15_8_DEF
0x1
Used to initialize GPIO bank [15:8] to 0 or 1 after reset.
0
MSS_GPIO_7_0_DEF
0x1
Used to initialize GPIO bank [7:0] to 0 or 1 after reset.
Table 542 •
LOOPBACK_CR
Bit
Number Name
Reset
Value
Description
[31:4]
Reserved
0
Reserved
3
MSS_GPIOLOOPBACK
0
Controls whether internal loopback on the MSS GPIO is
enabled. Allowed values:
0: No internal loopback for MSS GPIO
1: MSS GPIO outputs are looped back to MSS GPIO
inputs
Table 543 •
GPIN_SRC_SEL_CR
Bit
Number Name
Reset
Value
Description
[31:0]
MSS_GPINSOURCE
0
This 32-bit signal is used as select signal to generate a
GPIO input signal by selecting two output signals from
different IOMUXCELL or signals from I/O pads.