System Interface Unit (SIU)
MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor 6-53
6.3.1.12.38 Pad Configuration Register 75–82 (SIU_PCR75–SIU_PCR82)
The SIU_PCR75–SIU_PCR82 registers control the pin function, direction, and static electrical attributes
of the MDO[11:4]_GPIO[82:75] pins. GPIO is the default function at reset for these pins. The full port
mode (FPM) bit in the Nexus port controller (NPC) port configuration register controls whether the pins
function as MDO[11:4] or GPIO[82:75]. The pad interface port enable for these pins is driven by the NPC
block. When the FPM bit is set, the NPC enables the MDO port enable, and disables GPIO. When the FPM
bit is cleared, the NPC disables the MDO port enable, and enables GPIO.
Figure 6-50. MDO[11:4]_GPIO[82:75] Pad Configuration Register (SIU_PCR75–SIU_PCR82)
Refer to Table 6-16 for bit field definitions.
6.3.1.12.39 Pad Configuration Register 83 (SIU_PCR83)
The SIU_PCR83 register controls the pin function, direction, and static electrical attributes of the
CNTXA_GPIO[83] pin.
Figure 6-51. CNTXA_GPIO[83] Pad Configuration Register (SIU_PCR83)
Refer to Table 6-16 for bit field definitions.
Address: Base + 0x00D6 through Base + 0x00E4 Access: Read / write[6:11, 14:15]
0123456789101112131415
R 000000
OBE
1
1
This bit applies to GPIO operation only. For GPO, set the IBE bit to 1 to reflect the pin state in the corresponding GPDI register.
Clear the IBE to 0 to reduce power consumption.
IBE
1
DSC ODE
2
2
Clear the ODE bit to 0 for MDO operation.
HYS
3
3
The HYS bit has no effect on MDO operation.
00
WPE
4
4
Clear the WPE bit to 0 for MDO operation.
WPS
W
RESET: 0000000011000000
Address: Base + 0x00E6 Access: Read / write[5:7, 10:15]
0123456789101112131415
R 00000
PA OBE
1
1
When configured as CNTX, the OBE bit has no effect. When configured as GPO, set the OBE bit to 1.
IBE
2
2
When configured as CNTX or GPO, set the IBE bit to 1 to reflect the pin state in the corresponding GPDI register. Clear the
IBE to 0 to reduce power consumption. When configured as GPI, set the IBE bit to 1.
00
ODE HYS SRC WPE WPS
W
RESET: 0000000000000011
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