mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 49

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

2.4.5
Figure 2-9
Figure 2-10
Freescale Semiconductor
CLKOUT divider internal reset,
the divider is based on a counter
CLKOUT divider/counter output
Notes:
1
2
3
Internal CLK_S[1:0] latches
Refer to
For example, running at 10 MHz, then switching to 4 MHz.
When the external hard reset signal applied to the RESET# pin is negated, the CLKOUT signal frequency
is stabilized after maximum 8 µT.
shows an example of connecting a FlexRay Optical/Electrical PHY to the MFR4200.
MFR4200 Connection to FlexRay Network
shows how to connect the RS485 transceiver to the CC.
External reset after
internal glitch filter
Where:
CLKOUT output
Chapter 5, “Clocks and Reset Generator
External Reset
RESET# pin
Figure 2-8. CLKOUT Generation During External Hard Reset
Counter starts counting
1
2
Counter maximum value
MFR4200 Data Sheet, Rev. 0
10 MHz
for more information on the reset glitch filter.
Latching window
4 MHz
Counter is reset
Counter does not count
max 8 µT
CLKOUT stabilization time
Modes of Operation
3
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