mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 217

• Manufacturer Part Number: mfr4200
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 6
Oscillator (OSCV2)
6.1
The OSCV2 module provides one oscillator concept:
6.1.1
The Pierce OSC option provides the following features:
Common features:
6.1.2
One mode of operation exists:
6.2
This section lists and describes the signals that connect off chip.
6.2.1
These pins provide the operating voltage (V
allows the supply voltage to the OSCV2 to be independently bypassed.
6.2.2
These pins provide the interface for either a crystal or a CMOS compatible clock to control the internal
clock generator circuitry. EXTAL is the external clock input or the input to the crystal oscillator amplifier.
XTAL is the output of the crystal oscillator amplifier. All the CC internal system clocks are derived from
Freescale Semiconductor
•
•
•
•
•
•
•
A robust full swing Pierce oscillator with the possibility to feed in an external square wave
Wider high frequency operation range
No DC voltage applied across the crystal
Full rail-to-rail (2.5 V nominal) swing oscillation with low EM susceptibility
Fast startup
Operation from the V
Full swing Pierce oscillator mode, which can also be used to feed in an externally generated square
wave suitable for high frequency operation and harsh environments
Introduction
External Signal Description
Features
Modes of Operation
V
EXTAL and XTAL — Clock/Crystal Source Pins
DDOSC
and V
DDOSC
SSOSC
2.5 V (nominal) supply rail
— OSC Operating Voltage, OSC Ground
MFR4200 Data Sheet, Rev. 0
DDOSC
) and ground (V
SSOSC
) for the OSCV2 circuitry. This
217