NXP Semiconductors MPC5644A, Reference Manual, Page: 436 / 1735

System Integration Unit (SIU)
MPC5644A Microcontroller Reference Manual, Rev. 6
436 Freescale Semiconductor
16.6.15.48.2 Pad Configuration Register 76 (SIU_PCR76)
Figure 16-64. Pad Configuration Register (SIU_PCR76)
16.6.15.48.3 Pad Configuration Register 77 (SIU_PCR77)
Figure 16-65. Pad Configuration Register (SIU_PCR77)
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.
S0xD8
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
This bit applies only to GPIO operation.
IBE
1
0 0 ODE
2
2
The ODE bit should be set to zero for MDO operation.
HYS
3
3
The HYS bit has no effect on MDO operation.
SRC WPE
4
4
The WPE bit should be set to zero for MDO operation.
WPS
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
= Unimplemented or Reserved
Table 16-67. SIU_PCR76 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 MDO[5] Nexus Message data out O 0b01
ALT1 ETPU_A[4] eTPU eTPU channel O 0b10
GPIO GPIO[76] SIU GPIO I/O 0b00
S0xDA
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
This bit applies only to GPIO operation.
IBE
1
0 0 ODE
2
2
The ODE bit should be set to zero for MDO operation.
HYS
3
3
The HYS bit has no effect on MDO operation.
SRC WPE
4
4
The WPE bit should be set to zero for MDO operation.
WPS
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
= Unimplemented or Reserved