Datasheet

Copyright © 2014–2016, Texas Instruments IncorporatedTerminal Configuration and Functions
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32
RM57L843
SPNS215C –FEBRUARY 2014–REVISED JUNE 2016 www.ti.com
4.2.1.14 Ethernet Controller
Table 4-14. ZWT Ethernet Controller: MDIO Interface
Terminal
Signal
Type
Default Pull
State
Pull Type
Output
Buffer
Drive
Strength
Description
Signal Name
337
ZWT
MDCLK T9 Output - - 8mA Serial clock output
MIBSPI3NCS[1]/MDCLK/N2HET1[25] V5(1)
MDIO F4 I/O Pulldown Fixed, 20 µA 8mA Serial data input/output
MIBSPI1NCS[2]/MDIO/N2HET1[19] G3(1)
(1) This is the secondary terminal at which the signal is also available. See Section 4.2.2.2 for more detail on how to select between the available terminals for input functionality.
Table 4-15. ZWT Ethernet Controller: Reduced Media Independent Interface (RMII)
Terminal
Signal
Type
Default Pull
State
Pull Type
Output
Buffer
Drive
Strength
Description
Signal Name
337
ZWT
N2HET1[12]/MIBSPI4NCS[5]/MII_CRS/RMII_CRS_DV B4 Input Pulldown Fixed, 20 µA - RMII carrier sense and data
valid
N2HET1[28]/MII_RXCLK/RMII_REFCLK K19 Input Pulldown Fixed, 20 µA 8mA EMII synchronous reference
clock for receive, transmit and
control interface
AD1EVT/MII_RX_ER/RMII_RX_ER/nTZ1_1 N19 Input Pulldown Fixed, 20 µA - RMII receive error
N2HET1[24]/MIBSPI1NCS[5]/MII_RXD[0]/RMII_RXD[0] P1 Input Pulldown Fixed, 20 µA - RMII receive data
N2HET1[26]/MII_RXD[1]/RMII_RXD[1] A14 Input Pulldown Fixed, 20 µA - RMII receive data
MIBSPI5SOMI[0]/DMM_DATA[12]/MII_TXD[0]/RMII_TXD[0] J18 Output Pullup 20 µA 8mA RMII transmit data
MIBSPI5SIMO[0]/DMM_DATA[8]/MII_TXD[1]/RMII_TXD[1] J19 Output Pullup 20 µA 8mA RMII transmit data
MIBSPI5CLK/DMM_DATA[4]/MII_TXEN/RMII_TXEN H19 Output Pullup 20 µA 8mA RMII transmit enable