Datasheet

TABLE 2-8: 24-QFN PACKAGE PIN ASSIGNMENTS
Pin NUM Pin Name Pin NUM Pin Name
1 VDD2A 13 MDC
2 LED2/
nINTSEL 14 nINT/REFCLKO
3 LED1/
REGOFF 15 nRST
4 XTAL2 16 TXEN
5 XTAL1/CLKIN 17 TXD0
6 VDDCR 18 TXD1
7 RXD1/
MODE1 19 VDD1A
8 RXD0/
MODE0 20 TXN
9 VDDIO 21 TXP
10 RXER/
PHYAD0 22 RXN
11 CRS_DV/
MODE2 23 RXP
12 MDIO 24 RBIAS
LAN8720A/LAN8720AI
DS00002165B-page 12  2016 Microchip Technology Inc.
2.2 Buffer Types
TABLE 2-9: BUFFER TYPES
BUFFER TYPE DESCRIPTION
IS Schmitt-triggered input
O12 Output with 12mA sink and 12mA source
VIS Variable voltage Schmitt-triggered input
VO8 Variable voltage output with 8mA sink and 8mA source
VOD8 Variable voltage open-drain output with 8mA sink
PU 50uA (typical) internal pull-up. Unless otherwise no
ted in the pin description, internal pull-
ups are always enabled.
Note: Internal pull-up resistors prevent unconnected inputs from floating. Do not rely on
internal resistors to drive signals external to the device. When connected to a load
that must be pulled high, an external resistor must be added.
PD 50uA (typical) internal pull-down. Unless otherw
ise noted in the pin description, internal pull-
downs are always enabled.
Note: Internal pull-down resistors prevent unconnected inputs from floating. Do not rely
on internal resistors to drive signals external to the device. When connected to a
load that must be pulled low, an external resistor must be added.
AI Analog input
AIO Analog bi-directional
ICLK Crystal oscillator input pin