MC68160
Enhanced Ethernet Transceiver
The MC68160 Enhanced Ethernet Interface Circuit is a BiCMOS device
which supports both IEEE 802.3 Access Unit Interface (AUI) and 10BASE–T
Twisted Pair (TP) Interface media connections through external isolation
transformers. It encodes NRZ data to Manchester data and supplies the
signals which are required for data communication via 10BASE–T or AUI
interfaces. The MC68160 gluelessly interfaces to the Ethernet controller
contained in the MC68360 Quad Integrated Communications Controller
(QUICC) device. The MC68160 also interfaces easily to most other
industry–standard IEEE 802.3 LAN controllers. Prior to twisted pair data
reception, Smart Squelch circuitry qualifies input signals for correct
amplitude, pulse width, and sequence requirements.
• Interfaces with AMD, National, Intel and Fujitsu IEEE 802.3 LAN Controllers
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ENHANCED ETHERNET
INTERFACE TRANSCEIVER
SEMICONDUCTOR
TECHNICAL DATA
Automatic Twisted Pair Wiring Polarity Fault Detection and Correction
Option
Automatic Port Selection Option with Status Output
Driver Pre–emphasis for Twisted Pair Output Data
52
1
Crystal Controlled Clock Oscillator or External Clock Generator Option
Digital Phase–Locked–Loop (DPLL) Timing Recovery and Data Decoding
FB SUFFIX
PLASTIC PACKAGE
CASE 848D
(Thin QFP)
Standby Mode with Reduced Power Consumption
Twisted Pair Signal Quality Error (Heartbeat) Test Option
Diagnostic Local Loop Back Option
Transmit, Receive and Collision Detection Status Output
ORDERING INFORMATION
Full–Duplex Operation Option on Twisted Pair Port
Twisted Pair Jabber Detection and Status Output
Operating
Temperature Range
Link Integrity Testing and Status Output
Package
TA = 0° to + 70°C
TQFP–52
Data
Receiver
Device
ARX+
MC68160FB
Figure 1. 10Base–T Interface Block Diagram
RX
RCLK
Manchester
Decoder
Mux
MFILT
CLSN
TXLED
Pulse Conditioner
Noise
Reject
Filter
Mux
ARX–
Pulse Conditioner
Noise
Reject
Filter
Collision
Detect
Mux
Pulse
Conditioner
Manchester
Encoder
X1
X2
ATX+
Mux
20 MHz
Osc
Receiver
Mux
÷2
TCLK
ACX+
ACX–
ATX–
TENA
TX
CS0
CS1
CS2
TPEN
APORT
TPAPCE
TPSQEL
TPFULDL
LOOP
Carrier
Detect
Jabber
Control
Driver
Pre–emphasis
Control
Link
Pulse
Control
Mode
Select
TPJABB
TPTX+ TPTX–
TPLIL
Collision
Detector
Control
AUI INTERFACE
SIA INTERFACE
RXLED
RENA
CLLED
Twisted
Pair
Polarity
Error
Control
Receiver
Squelch
Squelch
Test
Circuit
TPSQEL
TPRX–
TPRX+ TPPLR
This device contains 20,000 active transistors.
7–120
MOTOROLA ANALOG IC DEVICE DATA
