NXP Semiconductors MPC5644A, Reference Manual, Page: 403 / 1735

Memory
map a
n
d r
e
giste
r des
c
riptions
MPC5
644A
Micro
c
on
tro
ller
Re
fe
ren
ce
Man
u
al, R
e
v
. 6
Fre
e
scale Se
mi
condu
cto
r
40
3
Figure 16-15. Sample PCR map
f
S0x40
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
OBE bit is significant in GPIO
IBE
2
2
IBE bit is significant in GPIO
DSC ODE HYS
0 0
WPE WPS
W
Reset 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1
= Unimplemented or Reserved
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 CS[0] EBI Chip select O 0b01
ALT1 ADDR[8] EBI Address bus I/O 0b10
GPIO GPIO[0] EBI GPIO I/O 0b00
Read values
Write values
Reset values
Register Address
Footnote
Bit Number
Field Name
Register Bit Range = [4:5] Field Bit Range = [1:0]
“Signal” refers to position in
muxing order—Primary, ALT1,
ALT2, ALT3 or GPIO.
Signal I/O direction.
I - Input
O - Output
I/O - Input or output
PA field value
required to
select a
signal for the
pin controlled
by this PCR.