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Signal
ALT1
DSPI_D_PCS[5]
GPIO
GPIO[92]
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.
16.6.15.59 Pad Configuration Register 93 (SIU_PCR93)
SIU_BASE+0xFA
0
1
R
0
0
W
Reset
0
0
= Unimplemented or Reserved
1
The SCKA function is not available on the MPC5644A. Do not select 0b01 or 0b11 for the PA field.
2
When configured as GPO, the OBE bit should be set to one.
3
When configured as DSPI_C_PCS[1] 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.
Signal
3
SCKA
ALT1
DSPI_C_PCS[1]
GPIO
GPIO[93]
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.
3
This signal name is used to support legacy naming.
Freescale Semiconductor
Table 16-83. SIU_PCR92 PA values
Name
Module
DSPI
SIU
2
3
4
5
6
1
2
0
0
PA
OBE
0
0
0
0
0
Figure 16-81. Pad Configuration Register (SIU_PCR93)
Table 16-84. SIU_PCR93 PA values
Name
Module
DSPI
SIU
MPC5644A Microcontroller Reference Manual, Rev. 6
Description
I/O
Chip select
O
GPIO
I/O
7
8
9
10
11
3
IBE
0
0
ODE
HYS
0
0
0
0
0
Description
I/O
Chip select
O
GPIO
I/O
System Integration Unit (SIU)
1,2
PA value
0b10
0b00
12
13
14
15
SRC
WPE
WPS
0
0
1
1
1,2
PA value
0b10
0b00
447
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