Detailed Description

11. 10/100/1000 Tri-Speed Ethernet PHY

The SP605 uses the onboard Marvell Alaska PHY device (88E1111) for Ethernet communications at 10, 100, or 1000 Mb/s. The board supports a GMII interface from the FPGA to the PHY. The PHY connection to a user-provided Ethernet cable is through a Halo HFJ11-1G01E RJ-45 connector with built-in magnetics.

On power-up, or on reset, the PHY is configured to operate in GMII mode with PHY address 0b00111 using the settings shown in Table 1-14. These settings can be overwritten via software commands passed over the MDIO interface.

Table 1-14:PHY Configuration Pins

Pin

Connection on

Bit[2]

Bit[1]

Bit[0]

Board

Definition and Value

Definition and Value

Definition and Value

 

 

 

 

 

 

CFG2

VCC 2.5V

ANEG[3] = 1

ANEG[2] = 1

ANEG[1] = 1

CFG3

VCC 2.5V

ANEG[0] = 1

ENA_XC = 1

DIS_125 = 1

CFG4

VCC 2.5V

HWCFG_MD[2] = 1

HWCFG_MD[1] = 1

HWCFG_MD[0] = 1

CFG5

VCC 2.5V

DIS_FC = 1

DIS_SLEEP = 1

HWCFG_MD[3] = 1

CFG6

PHY_LED_RX

SEL_BDT = 0

INT_POL = 1

75/50 OHM = 0

 

 

 

 

 

Table 1-15shows the connections and pin numbers for the PHY.

Table 1-15:Ethernet PHY Connections

U1 FPGA Pin

Schematic Net Name

U46 M88E111

 

 

Pin Number

Pin Name

 

 

 

 

 

 

V20

PHY_MDIO

33

MDIO

 

 

 

 

R19

PHY_MDC

35

MDC

 

 

 

 

J20

PHY_INT

32

INT_B

 

 

 

 

J22

PHY_RESET

36

RESET_B

 

 

 

 

N15

PHY_CRS

115

CRS

 

 

 

 

M16

PHY_COL

114

COL

 

 

 

 

P20

PHY_RXCLK

7

RXCLK

 

 

 

 

U20

PHY_RXER

8

RXER

 

 

 

 

T22

PHY_RXCTL_RXDV

4

RXDV

 

 

 

 

P19

PHY_RXD0

3

RXD0

 

 

 

 

Y22

PHY_RXD1

128

RXD1

 

 

 

 

Y21

PHY_RXD2

126

RXD2

 

 

 

 

W22

PHY_RXD3

125

RXD3

 

 

 

 

W20

PHY_RXD4

124

RXD4

 

 

 

 

V22

PHY_RXD5

123

RXD5

 

 

 

 

V21

PHY_RXD6

121

RXD6

 

 

 

 

SP605 Hardware User Guide

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UG526 (v1.1.1) February 1, 2010

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Xilinx SP605 manual 11 /100/1000 Tri-Speed Ethernet PHY, 14PHY Configuration Pins, Bit2 Bit1 Bit0, U46 M88E111