Table 4-7. Pru1 Icss Industrial Ethernet Phy Strapping Resistors; Table 4-8. Icss Hsec Mux; Table 4-9. Cpsw Rgmii1 Rj45 Connector Led Indication - Texas Instruments AM263 Series User Manual

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Table 4-7. PRU1 ICSS Industrial Ethernet PHY Strapping Resistors

Functional Pin
RX_D0
LED1
RX_LINK
CRS
COL
TX_CLK
RX_ER
RX_D3
RX_D2
RX_D1
RX_DV
For both Ethernet PHY's:
• There are series termination resistors on the transmit and receive clock signals located near the AM263x
SoC.
• The MDIO and Interrupt signals from the SoC to the PHY require 2.2KΩ pull up resistors to the I/O supply
voltage for proper operation. The interrupt signal is driven by a GPIO signal that is mapped from the AM263x
SoC.
• The reset signal for the Ethernet PHY is driven by a 2-input AND gate. The AND gate's inputs are a GPIO
signal that is generated by the IO Expander and PORz.
• A 25MHz clock is sourced from a four output clock buffer that has a 25MHz oscillator as an input.
• There are three 1:2 muxes (TS3DDR3812RUAR) that control the mapping of ethernet signals from the SoC
to either the Ethernet PHY's or the HSEC connector. The select logic for the three muxes is driven by two
GPIO signals that are generated by the IO expander.
Select Signal Logic Level
ICSSM1_MUX_SEL LOW
HIGH
ICSSM2_MUX_SEL LOW
HIGH
4.6.3 LED Indication in RJ45 Connector
The AM263x Control Card has three RJ45 network ports for the RGMII and two ICSSM ports of the AM263x
SoC. Each RJ45 connector contains two bi-color LEDs that are used to indicate link and activity.
• RJ45 Connector LED indication for the CPSW RGMII1 port:
LED
Right LED
Left LED
SPRUJ09C – MARCH 2022 – REVISED FEBRUARY 2023
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Default Mode Mode in CC
1 1
1 1
0 1
0 0
0 0
0 0
0 1
0 0
0 0
0 0
0 0

Table 4-8. ICSS HSEC MUX

Condition
PRU0 signals mapped to Ethernet PHY
PRU0 signals mapped to HSEC
PRU1 signals mapped to Ethernet PHY
PRU1 signals mapped to HSEC

Table 4-9. CPSW RGMII1 RJ45 Connector LED indication

Color
Green
Yellow
Green
Yellow
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Function
auto-negotiation enable
odd nibble detection enable
PHY address: 001
RMII Controller Mode
LED1 on pin 31
fast link-drop disable
MII MAC mode
Auto MDIX enable
MDIX (applicable only when auto-MIDX is disabled)
Function
A[n] → B[n]
A[n] → C[n]
A[n] → B[n]
A[n] → C[n]
Indication
Ethernet PHY power established
Transmit or Receive activity
Link OK
1000BT link is up
AM263x Control Card Hardware User's Guide
Hardware Description
27