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ET1200 Datasheet(PDF) 32 Page - Beckhoff Automation GmbH & Co. KG |
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ET1200 Datasheet(HTML) 32 Page - Beckhoff Automation GmbH & Co. KG |
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32 / 70 page  Pin Description III-22 Slave Controller – ET1200 Hardware Description 3.8.3 EBUS/MII bridge port (Logical port 3) The bridge port is an additional port with logical number 3, it is configured via SII EEPROM, thus it is not available directly after power-on. The bridge port becomes available once the EEPROM is loaded successfully. The loop at this port is initially closed and has to be opened by the master explicitly. The bridge port may be either EBUS or MII. The MII bridge port is only available in chip mode 00. The polarity of PERR(3) and LINKACT(3) is active high. Table 27: Mapping of EBUS Bridge signals PDI Signal MODE[1:0]=00 MODE[1:0]=10/11 Signal Dir. Signal Dir. PDI[0] EBUS(3)_TX+ LO+ EBUS(3)_TX+ LO+ PDI[1] EBUS(3)_TX- LO- EBUS(3)_TX- LO- PDI[2] EBUS(3)_RX+ LI+ EBUS(3)_RX+ LI+ PDI[3] EBUS(3)_RX- LI- EBUS(3)_RX- LI- PDI[4] PERR(3) O PERR(3) O PDI[5] LINKACT(3) O LINKACT(3) O PDI[6]/CLK25OUT GPO[0] O GPO[0] O PDI[7]/CPU_CLK GPO[1] O GPO[1] O PDI[8] GPO[2] O MII PDI[9] GPO[3] O PDI[10] GPO[4] O PDI[11] GPO[5] O PDI[12] GPO[6] O PDI[13] GPO[7] O PDI[14] GPO[8] O PDI[15] GPO[9] O PDI[16] GPO[10] O PDI[17] GPO[11] O Table 28: Mapping of MII Bridge signals PDI Signal MODE[1:0]=00 Signal Dir. PDI[0] TX_ENA(3) O PDI[1] MI_CLK O PDI[2] RX_ERR(3) I PDI[3] LINK_MII(3) I PDI[4] PERR(3) O PDI[5] LINKACT(3) O PDI[6]/CLK25OUT CLK25OUT O PDI[7]/CPU_CLK GPO[1] O PDI[8] TX_D(3)[0] O PDI[9] TX_D(3)[1] O PDI[10] TX_D(3)[2] O PDI[11] TX_D(3)[3] O PDI[12] RX_CLK(3) I PDI[13] RX_DV(3) I PDI[14] RX_D(3)[0] I PDI[15] RX_D(3)[1] I PDI[16] RX_D(3)[2] I PDI[17] RX_D(3)[3] I |
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