Appendix A: Data Sheet Revision History ........................................................................................................................................... 51
The Microchip Web Site ...................................................................................................................................................................... 52
Customer Change Notification Service ............................................................................................................................................... 52
Customer Support ............................................................................................................................................................................... 52
Product Identification System ............................................................................................................................................................. 53
2016-2018 Microchip Technology Inc.
DS00002197E-page 3
KSZ8061RNB/RND
1.0
1.1
INTRODUCTION
General Description
The KSZ8061RNB/RND is a single-chip 10BASE-T/100BASE-TX Ethernet physical layer transceiver for transmission
and reception of data over an unshielded twisted pair (UTP) cable.
The KSZ8061RNB/RND features Quiet-Wire
®
internal filtering to reduce line emissions. It is ideal for applications, such
as automotive or industrial networks, where stringent radiated emission limits must be met. Quiet-Wire can utilize low-
cost unshielded cable, where previously only shielded cable solutions were possible. The KSZ8061RNB/RND also fea-
tures enhanced immunity to environmental EM noise.
The KSZ8061RNB/RND features a Reduced Media Independent Interface (RMII) for direct connection with RMII-com-
pliant Ethernet MAC processors and switches.
The KSZ8061RNB generates a 50-MHz RMII reference clock for use by the connected MAC device. In contrast, the
KSZ8061RND receives the 50-MHz RMII reference clock as an input.
The KSZ8061RNB/RND meets Automotive AEC-Q100 and EMC requirements, with an extended temperature range of
-40°C to +105°C. It is supplied in 32-pin, 5 mm × 5 mm QFN and WQFN packages.
The KSZ8061MNX and KSZ8061MNG devices have an MII interface and are described in a separate data sheet.
FIGURE 1-1:
SYSTEM BLOCK DIAGRAM
MDC/MDIO
MANAGEMENT
Quiet-WIRE
®
FILTERING
MAGNETICS
10/100 Mbps
RMII MAC
RMII
INTRP
SIGNAL DETECT
KSZ8061
RJ-45
CONNECTOR
MEDIA TYPES:
10BASE-T
100BASE-TX
DS00002197E-page 4
2016-2018 Microchip Technology Inc.
KSZ8061RNB/RND
2.0
PIN DESCRIPTION AND CONFIGURATION
32-QFN PIN ASSIGNMENT (TOP VIEW)
FIGURE 2-1:
SIGDET
REXT
VDDL
INTRP
RESET#
CONFIG1
DNU
XI
XO
AVDDH
TXP
TXM
RXP
RXM
AVDDL
1
2
3
4
5
6
7
8
9
32 31 30 29 28 27 26 25
24
23
22
21
20
19
DNU
LED0
TXD1
TXD0
TXEN
LED1
REF_CLK
RXD0
RXD1
18
17
Bottom paddle is GND
10 11 12 13 14
15 16
VDDL
MDIO
MDC
RXER
CRS_DV
PHYAD0
VDDIO
TABLE 2-1:
Pin Number
SIGNALS
Name
Buffer
Type
Note
Description
KSZ8061RNB: 25-MHz Crystal/Oscillator/External Clock Input. This
input references the AVDDH power supply.
KSZ8061RND: 50-MHz RMII Reference Clock Input. This input refer-
ences the AVDDH power supply.
KSZ8061RNB: Crystal feedback for 25-MHz crystal. This pin is a no
connect if oscillator or external clock source is used.
KSZ8061RND: This pin is unused. Leave it unconnected.
3.3V Supply for analog TX drivers and XI/XO oscillator circuit.
Physical transmit or receive signal (+ differential)
Transmit when in MDI mode; Receive when in MDI-X mode.
Physical transmit or receive signal (– differential)
Transmit when in MDI mode; Receive when in MDI-X mode.
Physical receive or transmit signal (+ differential)
Receive when in MDI mode; Transmit when in MDI-X mode.
Physical receive or transmit signal (‒ differential)
Receive when in MDI mode; Transmit when in MDI-X mode.
1.2V (nominal) supply for analog core
1.2V (nominal) supply for digital core
Management Interface (MIIM) Data I/O
This pin has a weak pull-up, is open-drain like, and requires an external
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