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LS1020A Datasheet(PDF) 29 Page - Freescale Semiconductor, Inc

Part # LS1020A
Description  TWR-LS1021A Reference Manual
PDF  71 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

LS1020A Datasheet(HTML) 29 Page - Freescale Semiconductor, Inc

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Architecture
TWR-LS1021A Reference Manual, Rev. 0
2-14
Freescale Semiconductor
Figure 2-8. Ethernet MII routing
2.10.1
IEEE-1588™ support
The LS1021A/LS1020A includes support for the IEEE 1588 precision time protocol (PTP). This facility
works in tandem with the internal Ethernet controllers to time-stamp incoming packets. This is supported
at a basic level with internal logic and the use of a precision 125.00 MHz reference clock, accurate to ±25
ppm. Figure 2-9 shows an overview of the IEEE 1588 block.



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