ICS1893CF datasheet(56/127 Pages) RENESAS

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ICS1893CF, Rev. K, 05/13/10

May, 2010

Chapter 7 Management Register Set

ICS1893CF Data Sheet - Release

IEEE-Assigned Organizationally Unique Identifier (OUI)

For each manufacturing organization, the IEEE assigns an 3-octet OUI. For Integrated Circuit Systems,

Inc. the IEEE-assigned 3-octet OUI is 00A0BEh. This OUI is retained for backwards compatibility with older

versions of the ICS1893.

The binary representation of an OUI is formed by expressing each octet as a sequence of eight bits, from

least significant to most significant, and from left to right. Table 7-8 provides the ISO/IEC-defined mapping

of the OUI (in IEEE Std. 802-1990 format) to Management Registers 2 and 3.

7.5 Register 3: PHY Identifier Register

Table 7-9 lists the bits for PHY Identifier Register (Register 3), which is one of two PHY Identifier Registers

that are part of a set defined by the ISO/IEC specification. This register stores the following:

• Part of the OUI [see the text in Section 7.4, “Register 2: PHY Identifier Register”]

• Manufacturer’s PHY Model Number

• Manufacturer’s PHY Revision Number

All the bits in the two PHY Identifier Registers are Command Override Write bits. An STA can read them at

any time without condition. However, An STA can modify these register bits only when the Command

Note: For an explanation of acronyms used in Table 7-5, see Chapter 1, “Abbreviations and Acronyms”.

Table 7-8. IEEE-Assigned Organizationally Unique Identifier

First Octet

Second Octet

Third Octet

000

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

000

0000

0101

011111

2.15:12

2.11:8

2.7:4

2.3:0

3.15:12

3.11:10

Table 7-9. PHY Identifier Register (Register 3 [0x03])

Bit

Definition

When Bit = 0 When Bit = 1 Access

Special

Function

Default

Hex

3.15

OUI bit 19 | s

N/A

–

3.14

OUI bit 20 | t

N/A

–

3.13

OUI bit 21 | u

N/A

–

3.12

OUI bit 22 | v

N/A

–

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