MYSON MTD392V, MTD393N, MTD393V, MTD394N, MTD392N Datasheet
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MYSON
This datasheet contains new product information. Myson Technology reserves the rights to modify the product specification without notice.
is built for easy MAU interface in a coaxial Ethernet network. The MTD392 product family integrates the coaxial
Cheapernet LAN applications. In an
MTD393 applications with enhanced
MTD392
TECHNOLOGY
FAMILY
Coaxial Transceiver Interface
FEATURES
· Compatible with ISO/IEEE 802.3 10Base5 (Ethernet) and 10Base2 (Cheapernet).
· Functionally compatible with National DP8392C.
· Internal squelch circuitry for noise rejection.
· Reception/transmission mode collision detection.
· Transceiver functions integrated except for signal and power isolation.
· CD heartbeat externally selectable.
· Advanced low-power, high-performance CMOS technology.
· ESD protection greater than 2000 volts.
· 16-pin plastic DIP package, 24-pin skinny plastic DIP package, or 20 and 28-pin PLCC packages.
· Built-in LED drivers for collision, reception, jabber and transmission status display (MTDX93/X94 only).
· Collision detection mode for reception, transmission and hybrid (MTDX94 only).
· Special test mode allowing continuous transmission for waveform testing (MTDX94 only).
GENERAL DESCRIPTION
The MTD392 family includes a series of products, MTD392/3/4 and MTD492/3/4. The MTD392 product family
cable interface functions of Medium Attachment Unit (MAU) in Ethernet or
Ethernet 10Base5 network, the MTD392 product family is mounted on the thick Ethernet coaxial cable and
connects to a station through an AUI cable. For Cheapernet applications, the MTD392 product family is
connected to the Cheapernet coaxial cable through a BNC connector and is usually mounted on the LAN
adapter in a station.
Following is a table describing the differences among the MTD392 product family:
Product Features
MTD392 Basic transceiver 16-PDIP
MTD393 MTD392 with built-in LEDs 20-PLCC
MTD394 MTD393 with enhanced collision
detection mode, special pin for
testing
MTD49X MTD39X with improved
performance
Package
Types
28-PLCC
24-PDIP
24-PDIP
28-PLCC
Recommended Applications
Adapter boards
Adapter cards with status LEDs
collision detection
Basic MTD39X applications, Hub,
repeater and MAU applications
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
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MTD392 Revision 2.01 02/25/1997
MYSON
MTD392
TECHNOLOGY
BLOCK DIAGRAM FOR MTD392 FAMILY
COAX
125
10K
VEE
RECV
1K
FXI
GND
XMT
CDS
TXO
VEE
RR+
REFERENCE
RR-
EQUALIZATION
CIRCUIT
HIGH PASS
LOW PASS
FILTER
LOW PASS
FILTER
LOW PASS
FILTER
10MHz
OSC
WAVEFORM
CLK
COM
-
+
-
+
SHAPING
WATCH DOG
TIMER 26ms
TRANSMIT
MACHINE
COLLISION
STATE
DRIVER
CARRIER
SENSE
AUI
AUI
DRIVER
+
-
JABBER RESET
TIMER 0.4sec
RECEIVE
STATE
MACHINE
FAMILY
RX+
RX-
CD+
CD-
TX+
TX-
DC/AC
SQUELCH
XMTSQ
COAX
125
10K
VEE
RECV
1K
FXI
GND
XMT
TXO
RR+
RR-
CDS
VEE
REFERENCE
EQUALIZATION
CIRCUIT
Block Diagram for MTDX92
HIGH PASS
LOW PASS
FILTER
LOW PASS
FILTER
LOW PASS
FILTER
10MHz
OSC
TRANSMIT
STATE
MACHINE
COM
-
+
-
+
WAVEFORM
SHAPING
CLK
RECEIVE
MACHINE
HBE
STATE
CARRIER
SENSE
COLLISION
WATCH DOG
TIMER 26ms
AUI
DRIVER
+
-
AUI
DRIVER
SQUELCH
JABBER RESET
TIMER 0.4sec
RX+
RX-
CD+
CD-
TX+
TX-
DC/AC
XMTSQ
JAB
XMT
COL
RCV
HBE
Block Diagram for MTDX93
2/10
MTD392 Revision 2.01 02/25/1997
MYSON
RX-
TX+
TX-
HBE
GND
GND
RR+
MTD392
COAX
125
10K
VEE
RECV
1K
TECHNOLOGY
HIGH PASS
EQUALIZATION
1X
LOW PASS
FILTER
LOW PASS
FILTER
LOW PASS
FILTER
10MHz
OSC
TRANSMIT
STATE
MACHINE
HBE
Block Diagram for MTDX94
FXI
GND
XMT
TXO
RR+
RR-
CDS
16X
REFERENCE
MODE
CIRCUIT
COM
-
+
-
+
WAVEFORM
SHAPING
CLK/1024
CLK
TEST
RECEIVE
MACHINE
TESTMOD
STATE
CARRIER
SENSE
COLLISION
WATCH DOG
TIMER 26ms
AUI
DRIVER
+
-
AUI
DRIVER
SQUELCH
JABBER RESET
TIMER 0.4sec
LED DRIVER
FAMILY
RX+
RX-
CD+
CD-
TX+
TX-
DC/AC
XMTSQ
JAB
XMT
COL
RCV
1.0 CONNECTION DIAGRAM
(1) MTDX92 Pin Diagram
CD+
CD-
RX+
VEE
VEE
RX-
TX+
TX-
1
2
3
4
MTD392N
16 PIN PDIP
5
6
7
8
16
15
14
13
12
11
10
9
CDS
TX0
RXI
VEE
RR-
RR+
GND
HBE
VEE
VEE
VEE
VEE
VEE(NC)
VEE(NC)
VEE(NC)
RX+
CD-
CD+
MTD392V
28 PIN PLCC
CDS
TXDNCRXI
VEE(NC)
VEE
VEE
VEE
VEE
VEE(NC)
RR-
3/10
MTD392 Revision 2.01 02/25/1997
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