System Interface Unit (SIU)
MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor 6-83
Refer to Table 6-16 for bit field definitions.
6.3.1.12.96 Pad Configuration Register 203–204 (SIU_PCR203–SIU_PCR204)
The SIU_PCR203–SIU_PCR204 registers control the pin function, direction, and static electrical
attributes of the EMIOS[14:15]_GPIO[203:204] pins. EMIOS[14:15] are signal functions for output only.
These pins are named GPIO[203:204] because other pins are already named EMIOS[14:15]. The primary
function of these pins is EMIOS; however, out of reset, they are configured as GPIO. These pins are not
affected by WKPCFG (refer to Section 2.3.1.7, “Weak Pull Configuration / GPIO
(WKPCFG_GPIO213)”).
Figure 6-108. EMIOS[14:15]_GPIO[203:204] Pad Configuration Register (SIU_PCR203–SIU_PCR204)
Refer to Table 6-16 for bit field definitions.
6.3.1.12.97 Pad Configuration Registers 205 (SIU_PCR205)
The SIU_PCR205 register controls the direction and static electrical attributes of the GPIO[205] pin. This
register is separate from the PCRs for GPIO[206:207] because GPIO[205] is a medium pad type with slew
rate control and GPIO[206:207] are fast pad types with drive strength control. The PA bit is not
implemented for this PCR because GPIO is the only pin function.
Figure 6-109. GPIO[205] Pad Configuration Registers (SIU_PCR205)
Refer to Table 6-16 for bit field definitions.
Address: Base + 0x01D6 and Base + 0x01D8 Access: Read / write[5:7, 10:15]
0123456789101112131415
R 00000
PA
1
1
MPC5554 only: Set the PA bit to 1 for EMIOS, and clear the PA bit to 0 when using as GPIO.
OBE
2
2
When configured as EMIOS, the OBE bit has no effect. When configured as GPO, set the OBE bit to 1.
IBE
3
3
When configured as EMIOS 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
Address: Base + 0x01DA Access: Read / write[6:7, 10:15]
0123456789101112131415
R 000000
OBE
1
1
When configured as GPO, set the OBE bit to 1.
IBE
2
2
When configured as GPO, set the IBE bit to 1 to reflect the pin state in the corresponding GPDI register. When configured as
GPI, set the IBE bit to 1. Clear the IBE to 0 to reduce power consumption.
00
ODE HYS SRC WPE WPS
W
RESET: 0000000000000011
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