Datasheet

 2016 Microchip Technology Inc. DS00002164B-page 7
LAN8710A/LAN8710AI
TABLE 2-1: MII/RMII SIGNALS
Num Pins Name Symbol
Buffer
Type
Description
1 Transmit
Data 0
TXD0 VIS The MAC transmits data to the transceiver using
this signal in all modes.
1 Transmit
Data 1
TXD1 VIS The MAC transmits data to the transceiver using
this signal in all modes.
1 Transmit
Data 2
(MII Mode)
TXD2 VIS The MAC transmits data to the transceiver using
this signal in MII Mode.
Note: This signal must be grounded in RMII
Mode.
1 Transmit
Data 3
(MII Mode)
TXD3 VIS The MAC transmits data to the transceiver using
this signal in MII Mode.
Note: This signal must be grounded in RMII
Mode.
1 Interrupt Out-
put
nINT VO8 Active low interrupt output. Place an external
resistor pull-up to VDDIO.
Note: Refer to Section 3.6, "Interrupt
Management," on page 27 for additional
details on device interrupts.
Note: Refer to Section 3.8.1.2, "nINTSEL and
LED2 Polarity Selection," on page 33 for
details on how the nINTSEL configuration
strap is used to determine the function of
this pin.
Transmit
Error
(MII Mode)
TXER VIS
(PU)
When driven high, the 4B/5B encode process
substitutes the Transmit Error code-group (/H/) for
the encoded data word. This input is ignored in
the 10BASE-T mode of operation.
Transmit
Data 4
(MII Mode)
TXD4 VIS
(PU)
In Symbol Interface (5B Decoding) mode, this sig-
nal becomes the MII Transmit Data 4 line (the
MSB of the 5-bit symbol code-group).
Note: This signal is not used in RMII Mode.
1 Transmit
Enable
TXEN VIS
(PD)
Indicates that valid transmission data is present
on TXD[3:0]. In RMII Mode, only TXD[1:0] provide
valid data.
1 Transmit
Clock
(MII Mode)
TXCLK VO8 Used to latch data from the MAC into the trans-
ceiver.
• MII (100BASE-TX): 25MHz
• MII (10BASE-T): 2.5MHz
Note: This signal is not used in RMII Mode.