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ICS1893 bảng dữ liệu(PDF) 28 Page - Integrated Circuit Systems |
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ICS1893 bảng dữ liệu(HTML) 28 Page - Integrated Circuit Systems |
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28 / 152 page ![]() ICS1893 Rev C 6/6/00 June, 2000 28 Chapter 6 Interface Overviews ICS1893 Data Sheet - Release Copyright © 2000, Integrated Circuit Systems, Inc. All rights reserved. Table 6-1 lists the pin mappings for the ICS1893 100M Symbol Interface mode. Table 6-1. Pin Mappings for 100M Symbol Interface Mode Default 10M / 100M MII Pin Names MAC/Repeater Interface Pin Mappings, Configured for 100M Symbol Interface Mode COL No connect. [Because the MAC/repeater sources both active and ‘idle’data, a PHY cannot distinguish between an active and idle transmission channel (that is, to a PHY the transmit channel always appears active). Therefore, a PHY cannot accurately detect a collision.] CRS SCRS MDC MDC MDIO MDIO RXCLK SRCLK RXD0 SRD0 RXD1 SRD1 RXD2 SRD2 RXD3 SRD3 RXDV No connect. (Data exchanged between the MAC/repeater and a PHY is not framed in the 100M Symbol Interface mode. Therefore, RXDV has no meaning.) RXER SRD4 TXCLK STCLK TXD0 STD0 TXD1 STD1 TXD2 STD2 TXD3 STD3 TXEN No connect. (100Base-TX operations require continuous transmission of data. Therefore, the MAC/repeater is responsible for sourcing IDLE symbols when it is not transmitting data.) TXER STD4 |
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