KSZ8081RNA Datasheet, PDF (8/52 Pages) Microchip Technology – 10BASE-T/100BASE-TX PHY with RMII Support

KSZ8081RNA/RND
TABLE 2-1: SIGNALS - KSZ8081RNA/RND (CONTINUED)
Pin
Number
Paddle
Note 2-1
Note 2-2
Note 2-3
Pin
Name
Type
Note
2-1
Description
GND
GND Ground.
P = power supply
GND = ground
I = input
O = output
I/O = bi-directional
Ipu = Input with internal pull-up (see Section 6.0, "Electrical Characteristics" for value).
Ipu/O = Input with internal pull-up (see Section 6.0, "Electrical Characteristics" for value) during
power-up/reset; output pin otherwise.
Ipd/O = Input with internal pull-down (see Electrical Characteristics for value) during power-up/reset;
output pin otherwise.
Ipu/Opu = Input with internal pull-up (see Electrical Characteristics for value) and output with internal
pull-up (see Electrical Characteristics for value).
RMII RX Mode: The RXD[1:0] bits are synchronous with the 50 MHz RMII Reference Clock. For each
clock period in which CRS_DV is asserted, two bits of recovered data are sent by the PHY to the
MAC.
RMII TX Mode: The TXD[1:0] bits are synchronous with the 50 MHz RMII Reference Clock. For each
clock period in which TXEN is asserted, two bits of data are received by the PHY from the MAC.
DS00002199A-page 8
 2016 Microchip Technology Inc.