NXP Semiconductors MPC5644A, Reference Manual, Page: 433 / 1735

System Integration Unit (SIU)
MPC5644A Microcontroller Reference Manual, Rev. 6
Freescale Semiconductor 433
16.6.15.45 Pad Configuration Register 68 (SIU_PCR68)
Figure 16-60. Pad Configuration Register (SIU_PCR68)
Table 16-62. SIU_PCR65 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 WE[1]/BE[1] EBI Write enable / byte
enable O 0b1
GPIO GPIO[65] SIU GPIO I/O 0b0
S0xC8
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
0 0 0 0 0 PA OBE
1
1
When configured as GPO, the OBE bit should be set to one.
IBE
2
2
When configured as OE 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.
DSC ODE
3
3
When configured as OE, the ODE bit should be set to zero.
HYS 0 0 WPE
4
4
See the EBI section for weak pull up settings when configured as OE.
WPS
W
Reset
0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1
= Unimplemented or Reserved
Table 16-63. SIU_PCR68 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 OE EBI Output enable O 0b1
GPIO GPIO[68] SIU GPIO I/O 0b0