HD6417618 datasheet(270/646 Pages) RENESAS

Part #	HD6417618

Description	32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series

PDF	646 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 11 Ethernet Controller (EtherC)

Rev. 6.00 Jun. 12, 2007 Page 238 of 610

REJ09B0131-0600

11.3.4

PHY Interface Register (PIR)

PIR is a 32-bit readable/writable register that provides a means of accessing the PHY registers via

the MII.

Bit

Bit Name

Initial

Value

R/W

Description

31 to 4



All 0

Reserved

These bits are always read as 0. The write value should

always be 0.

MDI

Undefined R

MII Management Data-In

Indicates the level of the MDIO pin.

MDO

R/W

MII Management Data-Out

Outputs the value set to this bit from the MDIO pin,

when the MMD bit is 1.

MMD

R/W

MII Management Mode

Specifies the data read/write direction with respect to

the MII.

0: Read direction is indicated

1: Write direction is indicated

MDC

R/W

MII Management Data Clock

Outputs the value set to this bit from the MDC pin and

supplies the MII with the management data clock. For

the method of accessing the MII registers, see section

11.4.4, Accessing MII Registers.

HD6417618 Datasheet(PDF) 270 Page - Renesas Technology Corp

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