Signal Description
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 87
• The pad type descriptions
• The description of the pad configuration registers in Chapter 37, System Integration Unit Lite
(SIUL)
• The device data sheet
3.6 System pins
The system pins are listed in Table 3-2.
3.7 Debug pins
The debug pins are listed in Table 3-3.
Table 3-2. System pin descriptions
System pin Function
I/O
direction
Pad
type
RESET
config
Pin No.
144 LQFP 176 LQFP
208 MAPB
GA
RESET Bidirectional reset with
Schmitt-Trigger
characteristics and noise
filter.
I/O M Input, weak
pullup
24 24 J1
XTAL Analog input of the
oscillator amplifier circuit.
Needs to be grounded if
oscillator bypass mode is
used.
I X — 27 27 K1
EXTAL Analog output of the
oscillator amplifier circuit.
Input for the clock
generator in bypass mode.
X — 29 29 M1
VRC_CTRL VREG ballast control gain. — — — 25 25 P1
VREG_
BYPASS
1
1
VREG_BYPASS should be pulled down externally.
Pin used for factory testing. I X — 32 32 M4
Table 3-3. Debug pin descriptions
Debu
g
pin
Function
Pad
typ
e
I/O
directio
n
for
debug
RESET
config
1
Pin number
144 LQFP
176 LQFP
2
208 MAPBGA
Muxed
Dedi-
cated
3
TCK JTAG test clock S I Input, Pullup 36 43 R1 —
TDI JTAG test data in S I Input, Pullup 33 36 P2 —
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