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| RM57L843 Datasheet, PDF (34/218 Pages) Texas Instruments – Microcontroller Based on the ARM | |||
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RM57L843
SPNS215B â FEBRUARY 2014 â REVISED JANUARY 2016
www.ti.com
4.2.1.14 Ethernet Controller
Table 4-14. ZWT Ethernet Controller: MDIO Interface
Signal Name
Terminal
337
ZWT
Signal
Type
Default Pull
State
Pull Type
Output
Buffer
Drive
Strength
Description
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 Name
N2HET1[12]/MIBSPI4NCS[5]/MII_CRS/RMII_CRS_DV
337
ZWT
B4
Signal
Type
Default Pull
State
Input
Pulldown
Pull Type
Fixed, 20 µA
Output
Buffer
Drive
Strength
-
N2HET1[28]/MII_RXCLK/RMII_REFCLK
K19
Input
Pulldown
Fixed, 20 µA
8mA
AD1EVT/MII_RX_ER/RMII_RX_ER/nTZ1_1
N2HET1[24]/MIBSPI1NCS[5]/MII_RXD[0]/RMII_RXD[0]
N2HET1[26]/MII_RXD[1]/RMII_RXD[1]
MIBSPI5SOMI[0]/DMM_DATA[12]/MII_TXD[0]/RMII_TXD[0]
MIBSPI5SIMO[0]/DMM_DATA[8]/MII_TXD[1]/RMII_TXD[1]
MIBSPI5CLK/DMM_DATA[4]/MII_TXEN/RMII_TXEN
N19
Input
Pulldown
P1
Input
Pulldown
A14
Input
Pulldown
J18
Output
Pullup
J19
Output
Pullup
H19
Output
Pullup
Fixed, 20 µA
Fixed, 20 µA
Fixed, 20 µA
20 µA
20 µA
20 µA
-
-
-
8mA
8mA
8mA
Description
RMII carrier sense and data
valid
EMII synchronous reference
clock for receive, transmit and
control interface
RMII receive error
RMII receive data
RMII receive data
RMII transmit data
RMII transmit data
RMII transmit enable
34
Terminal Configuration and Functions
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