Functional Description
26.1.8.4.4 Pins Used
The list of device pins that are configured by the ROM in the case of EMAC boot mode are as follows.
Please note that all the pins might not be driven at boot time.
Table 26-32. Pins Used for EMAC Boot in MII Mode
Signal Name
Pin Used in Device
Pin Mux Mode
gmii1_col
MII1_COL
0
gmii1_crs
MII1_CRS
0
gmii1_rxer
MII1_RX_ER
0
gmii1_txen
MII1_TX_EN
0
gmii1_rxdv
MII1_RX_DV
0
gmii1_txd[3:0]
MII1_TXD[3:0]
0
gmii1_txclk
MII1_TX_CLK
0
gmii1_rxclk
MII1_RX_CLK
0
gmii1_rxd[3:0]
MII1_RXD[3:0]
0
mdio_data
MDIO
0
mdio_clk
MDC
0
Table 26-33. Pins Used for EMAC Boot in RGMII Mode
Signal Name
Pin Used in Device
Pin Mux Mode
rgmii1_tctl
MII1_TX_EN
2
rgmii1_rctl
MII1_RX_DV
2
rgmii1_td[3:0]
MII1_TXD[3:0]
2
rgmii1_tclk
MII1_TX_CLK
2
rgmii1_rclk
MII1_RX_CLK
2
rgmii1_rd[3:0]
MII1_RXD[3:0]
2
mdio_data
MDIO
0
mdio_clk
MDC
0
Table 26-34. Pins Used for EMAC Boot in RMII Mode
Signal Name
Pin Used in Device
Pin Mux Mode
rmii1_crs_dv
MII1_CRS
1
rmii1_rxer
MII1_RX_ER
1
rmii1_txen
MII1_TX_EN
1
rmii1_txd[1:0]
MII1_TXD[1:0]
1
rmii1_rxd[1:0]
MII1_RXD[1:0]
1
RMII1_REF_CLK (Driven by External 50-MHz
rmii1_refclk
0
Source)
mdio_data
MDIO
0
mdio_clk
MDC
0
4146
Initialization
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated