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AM79C978VC/W 데이터시트(PDF) 188 Page - Advanced Micro Devices |
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AM79C978VC/W 데이터시트(HTML) 188 Page - Advanced Micro Devices |
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188 / 261 page ![]() 188 Am79C978 10BASE-T PHY Management Registers (TBRs) The Am79C978 home networking device supports the MII basic register set and extended register set. Both sets of registers are accessible through the PHY Man- agement Interface. As specified in the IEEE standard, the basic register set consists of the Control Register (Register 0) and the Status Register (Register 1). The extended register set consists of Registers 2 to 31 (decimal). Table 64 lists all the 10BASE-T registers implemented in the device. All the reserved registers should not be written to, and reading them will return a zero value. Table 64. Am79C978 10BASE-T PHY Management Register Set Register Address (in Decimal) Register Name Basic/ Extended 0 PHY Control B 1PHY Status B 2-3 PHY Identifier E 4 Auto-Negotiation Advertisement E 5 Auto-Negotiation Link Partner Ability E 6 Auto-Negotiation Expansion E 7 Auto-Negotiation Next Page E 8-15 Reserved E 16 Interrupt Enable and Status E 17 PHY Control/Status E 18 Reserved E 19 PHY Management Extension E 20-23 Reserved E 24 Summary Status E 25-31 Reserved E |
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