Table 3-19. Default Strap Setting Of Cpsw Ethernet Phy; Table 3-20. Default Strap Setting Of Icssg Ethernet Phys - Texas Instruments AM64 Series User Manual

System Description
Strap Setting Pin Name
PHY Address RX_D2
RX_D0
Auto Negotiation RX_DV/RX_CTRL
Modes of Operation LED_2
LED_1
LED_0
GPIO_1
GPIO_0
Strap Setting Pin Name
PHY Address RX_D1
RX_D0
Modes of RX_CNTL
Operation
LED_2
LED_1
LED_0
JTAG_TDO/
GPIO_1
The PHY devices include integrated MDI termination resistors, so external termination is not provided.
Interrupt: The interrupt from two ICSSG PHYs from PRG1 domain are tied together and is connected to
EXTINTN pin of the AM64x/AM243x. An option for connecting the interrupt from CPSW PHY to the PRG1
ICSSG Interrupt pins is also provided.
Three configurable LED pins and a GPIO of Ethernet PHY are used to indicate link status. Several functions can
be multiplexed onto the LEDs for different modes of operation. The LED operation mode can be selected using
36 AM64x/AM243x GP EVM User's Guide

Table 3-19. Default Strap Setting of CPSW Ethernet PHY

Strap Function
PHY_AD3
PHY_AD2
PHY_AD1
PHY_AD0
Auto-neg
RGMII Clock Skew
TX[1]
RGMII Clock Skew
TX[0]
RGMII Clock Skew
TX[2]
ANEG_SEL
Mirror Enable
RGMII Clock Skew
RX[2]
RGMII clock Skew
TX[1]
RGMII clock Skew
RX[0]

Table 3-20. Default Strap Setting of ICSSG Ethernet PHYs

Mode for
PRG1_RGMII2
Strap Function (ICSSG1)
PHY_AD3 3
PHY_AD2 3
PHY_AD1 0
PHY_AD0 0
Mirror Enable 0
ANEGSEL_1 0
ANEGSEL_0 0
ANEG_DIS 0
OPMODE_0 0
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Mode for
PRG0_PRU1,
PRG0_PRU0 Value of Strap
,PRG1_PRU1, Function for PRG0
PRG1_PRU0 and PRG1
1
1
1
1
3
1
1
1
1
1
1
1
1
Value of Strap
Function for Mode for
PRG1_RGMII2 PRG1_RGMII1
(ICSSG1) (ICSSG2)
1 3
1 3
0 3
0 3
0 0
0 0
0 0
0 0
0 0
SPRUIX0C – FEBRUARY 2021 – REVISED JUNE 2021
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Description
0 PHY Address: 0000
0
0
0
0 Auto neg Disable=0
0 RGMII TX Clock
Skew is set to 2 ns
0
0
0 advertise ability of
10/100/1000
0 Mirror Enable
Disabled
0 RGMII RX Clock
Skew is set to 2 ns
0
0
Value of Strap
Function for
PRG1_RGMII1
(ICSSG2) Description
1 ICSSG1 PHY
Address: 00011
1
1 ICSSG2PHY
Address: 01111
1
0 Mirror Enable
Disabled
0 Auto-
negotiation,
0
10/100/1000
0
advertised,
Auto-MDI-X
0 RGMII to
Copper
(1000BaseT/
100Base-TX/
10Base-Te)
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