LAN88710AM SMSC, LAN88710AM Datasheet - Page 31

• Manufacturer Part Number: LAN88710AM
• Description: Ethernet ICs MII/RMII 10/100 Automot Transceiver
• Manufacturer: SMSC

Specifications of LAN88710AM

• Ethernet Connection Type: 10BASE-T, 100BASE-TX
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Product: Ethernet Transceivers
• Standard Supported: IEEE802.3, IEEE802.3u
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.6 V
• Maximum Operating Temperature: + 85 C
• Package / Case: QFN-32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Small Footprint MII/RMII 10/100 Ethernet Transceiver for Automotive Applications
Datasheet
SMSC LAN88710AM/LAN88710BM
3.4
3.4.1
The MII/RMII block is responsible for communication with the MAC controller. Special sets of hand-
shake signals are used to indicate that valid received/transmitted data is present on the 4 bit
receive/transmit bus.
The device must be configured in MII or RMII mode. This is done by specific pin strapping
configurations. Refer to
strapping and how the pins are mapped differently.
MII
The MII includes 16 interface signals:
In MII mode, on the transmit path, the transceiver drives the transmit clock, TXCLK, to the controller.
The controller synchronizes the transmit data to the rising edge of TXCLK. The controller drives TXEN
high to indicate valid transmit data. The controller drives TXER high when a transmit error is detected.
On the receive path, the transceiver drives both the receive data, RXD[3:0], and the RXCLK signal.
The controller clocks in the receive data on the rising edge of RXCLK when the transceiver drives
RXDV high. The transceiver drives RXER high when a receive error is detected.
MAC Interface
transmit data - TXD[3:0]
transmit strobe - TXEN
transmit clock - TXCLK
transmit error - TXER/TXD4
receive data - RXD[3:0]
receive strobe - RXDV
receive clock - RXCLK
receive error - RXER/RXD4/PHYAD0
collision indication - COL
carrier sense - CRS
Section 3.4.3, "MII vs. RMII Configuration," on page 33
DATASHEET
31
for information on pin
Revision 1.1 (05-26-10)