NXP Semiconductors MPC5644A, Reference Manual, Page: 499 / 1735

System Integration Unit (SIU)
MPC5644A Microcontroller Reference Manual, Rev. 6
Freescale Semiconductor 499
16.6.15.127Pad Configuration Register 208 (SIU_PCR208)
Figure 16-160. Pad Configuration Register (SIU_PCR208)
Table 16-162. SIU_PCR207 PA values
Signal Name Module Description I/O
1,2
1
In cases where an I/O function can be either an input or an output, I/O direction is specified using the IBE and OBE
bits. Set IBE = 1 for input or OBE = 1 for output.
2
For I/O functions that change direction dynamically, such as the external data bus, switching between input and
output is handled internally and the IBE and OBE bits are ignored.
PA value
GPIO GPIO[207]
ETRIG1 SIU GPIO I/O 0b0
S0x1E0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
0 0 0 PA OBE
1
1
When configured as IRQ, the OBE bit has no effect. When configured as GPO, the OBE bit should be set to one.
IBE
2
2
When configured as IRQ or GPO, the IBE bit may be set to one to reflect the pin state in the corresponding GPDI
register. Setting the IBE bit to zero reduces power consumption. When configured as GPI, the IBE bit should be set
to one.
0 0 ODE HYS
3
3
When configured as IRQ, the HYS bit should be set to one.
SRC WPE WPS
W
Reset
0 0 0 0 0 1 0 1 0 0 0 1 0 0 1 1
= Unimplemented or Reserved
Table 16-163. SIU_PCR208 PA values
Signal Name Module Description I/O
1,2
1
In cases where an I/O function can be either an input or an output, I/O direction is specified using the IBE and OBE
bits. Set IBE = 1 for input or OBE = 1 for output.
2
For I/O functions that change direction dynamically, such as the external data bus, switching between input and
output is handled internally and the IBE and OBE bits are ignored.
PA value
Primary PLLREF Config Selects FMPLL mode after reset I 0b001
ALT1 IRQ[4] SIU External interrupt I 0b010
ALT2 ETRIG2 SIU Triggers eQADC CFIFO2 I 0b100
GPIO GPIO[208] SIU GPIO I/O 0b000