NXP Semiconductors MPC5566 - Pad Configuration Register 121 (SIU_PCR121)

System Integration Unit (SIU)
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 6-67
6.3.1.83 Pad Configuration Register 121 (SIU_PCR121)
The SIU_PCR121 register controls the function, direction, and electrical attributes of
ETPUA[7]_ETPUA[19]_GPIO[121]. Only the output channel of ETPUA[19] is connected. Both the input
and output channels of ETPUA[7] are connected.
Figure 6-84. ETPUA[7]_ETPUA[19]_GPIO[121]
Pad Configuration Register (SIU_PCR121)
Refer to Table 6-19 for bit field definitions. Table 6-83 lists the PA fields for
ETPUA[7]_ETPUA[19]_GPIO[121].
Address: Base + 0x0132 Access: R/W
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 0 0
PA OBE
1
1
The OBE bit must be set to 1 for ETPUA[7] and GPIO[121] when configured as outputs.
When configured as ETPUA[19], the OBE bit has no effect.
IBE
2
2
The IBE bit must be set to 1 for ETPUA[7], ETPUA[19], and GPIO[121] when configured as inputs.
When the pad is configured as an output, set the IBE bit to 1 to show the pin state in the GPDI register.
0 0
ODE HYS SRC WPE WPS
W
RESET: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 U
3
3
The weak pullup/down value at reset for ETPUA[7] and ETPUA[19] is determined by WKPCFG.
Table 6-83. PCR121 PA Field Definitions
PA Field Pin Function
0b00 GPIO[121]
0b01 ETPUA[7]
0b10 ETPUA[19]
0b11 ETPUA[7]