Utilities. More...

Detailed Description

Utilities.

This module contains constants and helpers as library to help working with Ethernet PHYs connected via the Media-Independent Interface (MII) or the Reduced Media-Independent Interface (RMII)

Files
file	mii.h
	Interface definition for MII/RMII h.

Functions
static bool	mii_can_100_mbps_full_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 100 Mbps at full duplex. More...

static bool	mii_can_100_mbps_half_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 100 Mbps at half duplex. More...

static bool	mii_can_10_mbps_full_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 10 Mbps at full duplex. More...

static bool	mii_can_10_mbps_half_dp (uint16_t bmsr)
	Check if an Ethernet PHY supports 10 Mbps at half duplex. More...

Common MII Management Register Set
All registers except MII_BMCR and MII_BMSR are extended registers. Support for extended registers is indicated by the MII_BMSR_EXTENDED bit in the MII_BMSR register.
#define	MII_BMCR (0x00U)
	Basic mode control register.

#define	MII_BMSR (0x01U)
	Basic mode status register.

#define	MII_PHYID1 (0x02U)
	PHY Identifier 1.

#define	MII_PHYID2 (0x03U)
	PHY Identifier 2.

#define	MII_ADVERTISE (0x04U)
	Auto-Negotiation Advertisement.

#define	MII_LPA (0x05U)
	Link Parter Abilities.

#define	MII_EXPANSION (0x06U)
	Auto-Negotiation Expansion.

#define	MII_ESTATUS (0x0fU)
	Extended Status Register.

Bits in the MII Basic Mode Control Register
#define	MII_BMCR_RESET BIT15
	Set to perform PHY reset.

#define	MII_BMCR_LOOP BIT14
	Set to enable loopback mode.

#define	MII_BMCR_AN_ENABLE BIT12
	Set to enable auto-negotiation.

#define	MII_BMCR_POWER_DOWN BIT11
	Set to power down PHY.

#define	MII_BMCR_ISOLATE BIT10
	Set to electrically isolate PHY from MII (PHY becomes inoperational)

#define	MII_BMCR_AN_RESTART BIT9
	Set to restart auto-negotiation.

#define	MII_BMCR_FULL_DPLX BIT8
	Set for full duplex.

#define	MII_BMCR_HALF_DPLX (0)
	Set for half duplex.

#define	MII_BMCR_COLL_TEST BIT7
	Set to enable collision signal test.

#define	MII_BMCR_SPEED_10 (0)
	Set speed to 10 Mbps.

#define	MII_BMCR_SPEED_100 BIT13
	Set speed to 100 Mbps.

#define	MII_BMCR_SPEED_1000 BIT6
	Set speed to 1 Gbps.

Bits in the MII Basic Mode Status Register
#define	MII_BMSR_100_T4 BIT15
	PHY supports 100BASE-T4 (half-duplex)

#define	MII_BMSR_100_TX_F BIT14
	PHY supports 100BASE-TX, full duplex.

#define	MII_BMSR_100_TX_H BIT13
	PHY supports 100BASE-TX, half duplex.

#define	MII_BMSR_10_F BIT12
	PHY supports 10BASE-T, full duplex.

#define	MII_BMSR_10_H BIT11
	PHY supports 10BASE-T, half duplex.

#define	MII_BMSR_100_T2_F BIT10
	PHY supports 100BASE-T2, full duplex.

#define	MII_BMSR_100_T2_H BIT9
	PHY supports 100BASE-T2, half duplex.

#define	MII_BMSR_ESTATUS BIT8
	Set, if MII_ESTATUS is available.

#define	MII_BMSR_AN_DONE BIT5
	Set when auto-negotiation is done.

#define	MII_BMSR_FAULT BIT4
	Set when remote fault condition is detected.

#define	MII_BMSR_HAS_AN BIT3
	Set if PHY can auto-negotiate.

#define	MII_BMSR_LINK BIT2
	Set if link is up.

#define	MII_BMSR_JABBER BIT1
	Set when jabber condition detected.

#define	MII_BMSR_EXTENDED BIT0
	Extended MII registers available.

Bits in the MII Extended Mode Advertisement Register
#define	MII_ADVERTISE_100_F BIT8
	Advertise 100BASE-T, full duplex.

#define	MII_ADVERTISE_100_H BIT7
	Advertise 100BASE-T, half duplex.

#define	MII_ADVERTISE_10_F BIT6
	Advertise 10BASE-T, full duplex.

#define	MII_ADVERTISE_10_H BIT5
	Advertise 10BASE-T, half duplex.

#define	MII_ADVERTISE_100 (BIT7 \| BIT8)
	Advertise 100BASE-T.

#define	MII_ADVERTISE_10 (BIT5 \| BIT6)
	Advertise 10BASE-T.

#define	MII_LPA_100_F BIT8
	Partner can 100BASE-T, full duplex.

#define	MII_LPA_100_H BIT7
	Partner can 100BASE-T, half duplex.

#define	MII_LPA_10_F BIT6
	Partner can 10BASE-T, full duplex.

#define	MII_LPA_10_H BIT5
	Partner can 10BASE-T, half duplex.

#define	MII_LPA_100 (BIT7 \| BIT8)
	Partner can 100BASE-T.

#define	MII_LPA_10 (BIT5 \| BIT6)
	Partner can 10BASE-T.

Function Documentation

◆ mii_can_100_mbps_full_dp()

static bool mii_can_100_mbps_full_dp ( uint16_t bmsr )

inlinestatic

Check if an Ethernet PHY supports 100 Mbps at full duplex.

Parameters

[in] bmsr Value of the MII basic mode status register

Return values

true	PHY supports 100 Mbps at full duplex
false	PHY does not support 100 Mbps at full duplex

Definition at line 130 of file mii.h.

◆ mii_can_100_mbps_half_dp()

static bool mii_can_100_mbps_half_dp ( uint16_t bmsr )

inlinestatic

Check if an Ethernet PHY supports 100 Mbps at half duplex.

Parameters

[in] bmsr Value of the MII basic mode status register

Return values

true	PHY supports 100 Mbps at half duplex
false	PHY does not support 100 Mbps at half duplex

Definition at line 143 of file mii.h.

◆ mii_can_10_mbps_full_dp()

static bool mii_can_10_mbps_full_dp ( uint16_t bmsr )

inlinestatic

Check if an Ethernet PHY supports 10 Mbps at full duplex.

Parameters

[in] bmsr Value of the MII basic mode status register

Return values

true	PHY supports 10 Mbps at full duplex
false	PHY does not support 10 Mbps at full duplex

Definition at line 156 of file mii.h.

◆ mii_can_10_mbps_half_dp()

static bool mii_can_10_mbps_half_dp ( uint16_t bmsr )

inlinestatic

Check if an Ethernet PHY supports 10 Mbps at half duplex.

Parameters

[in] bmsr Value of the MII basic mode status register

Return values

true	PHY supports 10 Mbps at half duplex
false	PHY does not support 10 Mbps at half duplex

Definition at line 169 of file mii.h.

Detailed Description

Files

Functions

Common MII Management Register Set

Bits in the MII Basic Mode Control Register

Bits in the MII Basic Mode Status Register

Bits in the MII Extended Mode Advertisement Register

Function Documentation

◆ mii_can_100_mbps_full_dp()

◆ mii_can_100_mbps_half_dp()

◆ mii_can_10_mbps_full_dp()

◆ mii_can_10_mbps_half_dp()