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System Integration Unit (SIU)
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.
16.6.15.118Pad Configuration Register 198 (SIU_PCR198)
SIU_BASE+0x1CC
0
1
R
0
0
W
Reset
0
0
= Unimplemented or Reserved
1
The OBE bit must be set to one for both EMIOS[19] and GPIO[198] when configured as outputs.
2
When configured as 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. The IBE bit must be set to one for both EMIOS[19] and
GPIO[198] when configured as inputs.
Signal
Primary
EMIOS[19]
GPIO
GPIO[198]
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.
16.6.15.119Pad Configuration Register 199 (SIU_PCR199)
SIU_BASE+0x1CE
0
1
R
0
0
W
Reset
0
0
= Unimplemented or Reserved
1
The OBE bit must be set to one for both EMIOS[20] and GPIO[199] when configured as outputs.
2
When configured as 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. The IBE bit must be set to one for both EMIOS[20] and
GPIO[199] when configured as inputs.
3
The weak pull up/down selection at reset for the EMIOS[20] pin is determined by the WKPCFG pin.
494
2
3
4
5
6
0
0
0
PA
OBE
0
0
0
0
0
Figure 16-151. Pad Configuration Register (SIU_PCR198)
Table 16-154. SIU_PCR198 PA values
Name
Module
eMIOS
SIU
2
3
4
5
6
0
0
0
PA
OBE
0
0
0
0
0
Figure 16-152. Pad Configuration Register (SIU_PCR199)
MPC5644A Microcontroller Reference Manual, Rev. 6
7
8
9
10
1
2
IBE
0
0
ODE
0
0
0
0
Description
eMIOS channel
I/O
GPIO
I/O
7
8
9
10
1
2
IBE
0
0
ODE
0
0
0
0
11
12
13
14
15
HYS
SRC
WPE
WPS
0
0
0
1
WKP
1,2
I/O
PA value
0b1
0b0
11
12
13
14
15
HYS
SRC
WPE
WPS
0
0
0
1
WKP
Freescale Semiconductor
3
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