PC56F8006VWL Datasheet, PDF (19/106 Pages) Freescale Semiconductor, Inc – Digital Signal Controller

Signal/Connection Descriptions
Table 5. 56F8006/56F8002 Signal and Package Information (continued)
Signal
Name
GPIOA3
28
SOIC
32
LQFP
32
PSDI
P
48
LQFP
17 24 20 36
Type
Input/
Output
(PWM3)
Output
State
During
Reset
Signal Description
Input, Port A GPIO — This GPIO pin can be individually programmed as
internal an input or output pin.
pullup
enabled
PWM3 — The PWM channel 3.
(TXD)
Output
TXD — The SCI transmit data output or transmit/receive in single
wire operation.
(EXTAL)
Analog
Input
EXTAL — External Crystal Oscillator Input. This input can be
connected to a 32.768 kHz or 1–16 MHz external crystal or ceramic
resonator. When used to supply a source to the internal PLL, the
crystal/resonator must be in the 4 MHz to 8 MHz range. Tie this pin
low or configure as GPIO if XTAL is being driven by an external
clock source.
If using a 32.768 kHz crystal, place the crystal as close as possible
to device pins to speed startup.
GPIOA4
(PWM4)
(SDA)
16 22 18 33
Input/
Output
Output
After reset, the default state is GPIOA3.
Input, Port A GPIO — This GPIO pin can be individually programmed as
internal an input or output pin.
pullup
enabled PWM4 — The PWM channel 4.
Input/Open-
drain
Output
SDA — The I²C serial data line.
(FAULT1)
Input
FAULT1 — PWM fault input 1used for disabling selected PWM
outputs in cases where fault conditions originate off-chip.
(TIN2)
Input
TIN2 — Dual timer module channel 2 input
GPIOA5 14 20 16 29
(PWM5)
Input/
Output
Output
After reset, the default state is GPIOA4.
Input, Port A GPIO — This GPIO pin can be individually programmed as
internal an input or output pin.
pullup
enabled PWM5 — The PWM channel 5.
(FAULT2/
EXT_SYNC)
Input/
Output
FAULT2 — PWM fault input 2 used for disabling selected PWM
outputs in cases where fault conditions originate off-chip.
EXT_SYNC — When not being used as a fault input, this pin can be
used to receive a pulse to reset the PWM counter or to generate a
positive pulse at the start of every PWM cycle.
(TIN3)
Input
TIN3 — Dual timer module channel 3 input
After reset, the default state is GPIOA5.
MC56F8006/MC56F8002 Digital Signal Controller, Rev. 4
Freescale Semiconductor
19