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DP83255AVF 数据表(PDF) 71 Page - National Semiconductor (TI) |
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DP83255AVF 数据表(HTML) 71 Page - National Semiconductor (TI) |
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71 / 96 page  60 Pin Descriptions (Continued) PHY PORT INTERFACE The PHY Port Interface consists of IO signals used to connect the PLAYER Device to the Media Access Control (MAC) sublayer or other PLAYER Devices The DP83255 Device has two PHY Port Interfaces The A Request and A Indicate paths form one PHY Port Interface and the B Request and B Indicate paths form the second PHY Port Interface Each path consists of an odd parity bit a control bit and two 4-bit symbols Refer to Section 33 the Configuration Switch for more information Symbol Pin No IO Description AIP 24 O PHY Port A Indicate Parity A TTL output signal representing odd parity for the 10-bit wide Port A Indicate signals (AIP AIC and AIDk70l) AIC 26 O PHY Port A Indicate Control A TTL output signal indicating that the two 4-bit symbols (AIDk74l and AIDk30l) are either control symbols (AIC e 1) or data symbols (AIC e 0) AID7 28 O PHY Port A Indicate Data TTL output signals representing the first 4-bit datacontrol symbol AID6 30 AID5 33 AID7 is the most significant bit and AID4 is the least significant bit of the first symbol AID4 36 AID3 39 O PHY Port A Indicate Data TTL output signals representing the second 4-bit data control symbol AID2 41 AID1 43 AID3 is the most significant bit and AID0 is the least significant bit of the second symbol AID0 45 ARP 25 I PHY Port A Request Parity A TTL input signal representing odd parity for the 10-bit wide Port A Request signals (ARP ARC and ARDk70l) ARC 27 I PHY Port A Request Control A TTL input signal indicating that the two 4-bit symbols (ARDk74l and ARDk30l) are either control symbols (ARC e 1) or data symbols (ARC e 0) ARD7 29 I PHY Port A Request Data TTL input signals representing the first 4 bit datacontrol symbol ARD6 31 ARD7 is the most significant bit and ARD4 is the least significant bit of the first symbol ARD5 34 ARD4 37 ARD3 40 I PHY Port A Request Data TTL input signals representing the second 4-bit datacontrol symbol ARD2 42 ARD3 is the most significant bit and ARD0 is the least significant bit of the second ARD1 44 symbol ARD0 46 71 |
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