TMS570LS3137 datasheet(133/159 Pages) TI

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TMS570LS3137

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SPNS162.

– SEPTEMBER 2011

Table 5-16. FlexRay Jitter Timing(1)

Parameter

MIN

MAX

Unit

tTx1bit

Clock jitter and signal symmetry

102

tTx10bit

FlexRay BSS (byte start sequence) to BSS

999

1001

tTx10bitAvg

Average over 10000 samples

999.5

1000.5

tRxAsymDelay

(2)

Delay difference between rise and fall from Rx pin to sample

–

2.5

point in FlexRay core

tjit(SCLK)

Jitter for the 80MHz Sample Clock generated by the PLL

–

0.5

(1)

This parameter will be characterized, but not production-tested.

(2)

This value is based on design simulation.

5.5.3

FlexRay Transfer Unit

The FlexRay Transfer Unit is able to transfer data between the input buffer (IBF) and output buffer (OBF)

of the communication controller and the system memory without CPU interaction.

Because the FlexRay module is accessed through the FTU, the FTU must be powered up by the setting

bit 23 in the Peripheral Power Down Registers of the System Module before accessing any FlexRay

module register.

For more information on the FTU see the TMS570LS31X/TMS570LS21X Technical Reference Manual

(SPNU499).

Peripheral Information and Electrical Specifications

133

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