AM79C973KCW Advanced Micro Devices, AM79C973KCW Datasheet - Page 196
AM79C973KCW
Manufacturer Part Number
AM79C973KCW
Description
PCnet-FAST III Single-Chip 10/100 Mbps PCI Ethernet Controller with Integrated PHY
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C973KCW.pdf
(304 pages)
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ANR2 and ANR3: PHY Identifier (Registers 2 and 3)
Registers 2 and 3 contain a unique PHY identifier, con-
sisting of 22 bits of the organizationally unique IEEE
Identifier, a 6-bit manufacturer’s model number, and a
4-bit manufacturer’s revision number. The most signifi-
cant bit of the PHY identifier is bit 15 of register 2; the
least significant bit of the PHY identifier is bit 0 of reg-
ister 3. Register 2, bit 15 corresponds to bit 3 of the
196
2
3
3
3
Reg
Reg
15-10
9-4
3-0
15-0
Bits
Bits
PHY_ID[31-16]
PHY_ID[15-10]
PHY_ID[9-4]
PHY_ID[3-0]
Name
Name
Table 42. ANR2: PHY Identifier (Register 2)
Table 43. ANR3: PHY Identifier (Register 3)
IEEE Address (bits 3-18);
Register 2, bit 15 is MS bit of PHY
Identifier
IEEE Address (bits
19-24)
Manufacturer’s
Model Number (bits
5-0)
Revision Number
(bits 3-0); Register 3,
bit 0 is LS bit of PHY
Identifier
Description
P R E L I M I N A R Y
Am79C973/Am79C975
Description
IEEE Identifier and register 2, bit 0 corresponds to bit
18 of the IEEE Identifier. Register 3, bit 15 corresponds
to bit 19 of the IEEE Identifier and register 3, bit 10 cor-
responds to bit 24 of the IEEE Identifier. Register 3, bits
9-4 contain the manufacturer’s model number and bits
3-0 contain the manufacturer’s revision number. These
registers are shown in Table 42 and Table 43.
Read/Write
RO
RO
RO
Read/
Write
RO
011010
(1A Hex)
110110
(36 Hex)
0000
0000000000000000
(0000 Hex)
Default Value
Default Value
Retains original
value
Retains original
value
Retains original
value
Retains original
Value
Soft Reset
Soft Reset
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