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AM79C901AVIT bảng dữ liệu(PDF) 24 Page - Advanced Micro Devices

tên linh kiện AM79C901AVIT
Giải thích chi tiết về linh kiện  HomePHY Single-Chip 1/10 Mbps Home Networking PHY
PDF  90 Pages
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nhà sản xuất  AMD [Advanced Micro Devices]
Trang chủ  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C901AVIT bảng dữ liệu(HTML) 24 Page - Advanced Micro Devices

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Am79C901A
PR ELI M IN AR Y
Figure 4.
TXPKT - TXEN Asserted
Figure 5.
TXPKT - RXCLK Active
TXCLK
TXEN
TXDAT
RXCLK
RXCRS
RXDAT
CLS
Note: Once TXEN is asserted, the PHY stops RXCLK, asserts RXCRS, and toggles TXCLK.
22304B-6
TXCLK
TXEN
TXDAT
RXCLK
RXCRS
RXDAT
CLS
22304B-7
Note: TXCLK continues to toggle until the SFD is observed, as shown in the first section of the above diagram.
At this point, TXCLK is disabled (low) until the AID header has been transmitted on the wire (or until a CLS has
been detected). At this time RXCLK starts toggling, thereby, shifting 32 bits of preamble and SFD back to the
MAC. Sometime later, the TXCLK restarts as symbols get sent onto the wire in an analogous manner as
RXCLK during packet reception.



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