CentreCOM Micro Transceivers 10Base

Ethernet
CentreCOM
Micro
Transceivers
10Base-2 MAU
AT - M X 1 0
10Base-2 MAU, Slim-line AT - M X 1 0 S
10Base-T MAU
AT - M X 2 0 T
10Base-T MAU
AT - 2 1 0 T
10Base-T MAU, Slim-line AT - 2 1 0 T S
IEEE 802.3 COMPLIANT/ETHERNET
•
IEEE 802.3 compliant and Ethernet
Version 1.0 and 2.0 compatible
•
Direct Attachment Unit
Interface (AUI) connection
•
Slim-line versions (AT-MX10S,
AT-210TS) for improved
mechanical fit for Macintosh,
Sun SPARC stations and
IBMRS/6000 workstations
•
Switch-selectable SQE test
(all models) and LED (AT-MX10,
AT-MX10S, AT-210T, AT-210TS)
•
Polarity detection and correction
(AT-MX20T, AT-210T, AT-210TS)
and LED (AT-210T, AT-210TS)
•
Link integrity test function
and LED (AT-MX20T, AT-210T,
AT-210TS)
•
Five-year warranty
C O M PAT I B L E
The CentreCOM Micro Transceivers are
10Base-2 and 10Base-T compliant
transceivers designed to reduce Ethernet
cabling costs. Compact size allows these
transceivers to connect directly to the
workstation, bringing thin Ethernet or
Unshielded Twisted Pair (UTP) wiring
directly to the workstation. With UTP
and inexpensive coax network media,
distances up to 100 meters between workstations can be supported using UTP, and
up to 185 meters using coax.
The 10Base-2 compliant AT-MX10 and
AT-MX10S transceivers use an industrystandard Ethernet transceiver chip that
guarantees IEEE 802.3 compliance. The
10Base-T compliant AT-MX20T, AT-210T
and AT-210TS transceivers are also guaranteed compliant by the use of standard ICs.
On all models Signal Quality Error
(SQE)/Heartbeat test can easily be enabled
or disabled via an externally accessible
switch. Additionally, all models have
integral jabber lock-up prevention circuitry and a loopback function. This function
emulates coaxial media where transmitted
packets are looped back to the receive
side. Local Area Network (LAN)
controllers can use the loopback feature to
determine if a Media Attachment Unit
(MAU) is connected and operational.
The AT-MX20T, AT-210T and AT-210TS
transceivers incorporate other functions
that offer improved network reliability for
workstations. The 10Base-T link integrity
test function provides a continuous test of
the connection to the multiport repeater.
A test pulse is periodically transmitted and
expected at the companion transceiver’s
receive side. If the pulse is not seen on the
receive side, the transceiver is placed into
link test fail mode. Normal operation of
the transmit side is inhibited and the
“Link” LED is turned off. Normal
operation is resumed when the link is
re-established by the reception of a valid
packet or two valid link pulses.
10Base-T transceivers also address the
polarity of the receive pair wiring. In less
than one second, the UTP transceiver
automatically “rolls” the wire pair and
allows for the proper operation of the
transceiver. Also, the “Polarity” indicator
on the AT-210T and AT-210TS transceivers
is not illuminated when the circuitry has
transposed the receive pair.
SQE/Heartbeat test status is indicated by
LEDs on the AT-MX10, AT-MX10S,
AT-210T and AT-210TS transceivers. The
AT-MX10 and AT-MX10S transceivers
utilize a two-colored LED that indicates
the presence of Data Terminal Equipment
(DTE) power in addition to the SQE test.
The AT-210T and AT-210TS both have a
single LED that indicates the status of the
SQE test switch.
Specifications on next page
AT-MX10, AT-MX10S, AT-MX20T, AT-210T, AT-210TS
Specifications
S TAT U S I N D I C AT O R S
T W I S T E D PA I R I N T E R FA C E
O R D E R I N G I N F O R M AT I O N
AT-MX10/AT-MX10S:
Transmitter:
Power/HB
Peak Differential
Signal Amplitude
Transmitter Jitter
Harmonics Content
Common Mode
Output Voltage
Start-Up Delay
Steady State Delay
Silence
Voltage
Duration
Link Test Pulse
Output Impedance
Two-color Heartbeat LED
AT-MX20T:
Power
Transmit
Power is present from the DTE
Indicates packet is being
transmitted to the media
Indicates packet is being received
from the media
Indicates a valid link exists
Receive
Link
AT-210T/AT-210TS:
Power
Link
SQE Test
Polarity
Power is present from the DTE
Indicates a valid link exists
SQE/Heartbeat test enabled
Automatic polarity reversal has
not occurred
Transmitter:
|
Typical
|
Threshold Voltage
SQE Test
Delay
Duration
Collision
Indication Delay
Assert Delay
Jabber
Setup
Recovery
-200 mV
-175 to -225 mV
800 ns
1000 ns
600 to 1600 ns
500 to 1500 ns
Range
200 ns
200 ns
900 ns
900 ns
45 ms
450 ms
20 to 100 ms
250 to 750 ms
Receiver:
500 ns
100 ns
±800 mV
Loopback
Steady State Delay
Start-Up Delay
100 ns
100 ns
200 ns
±550 to
±1200 mV
Receiver Threshold
Input Impedance
Differential Noise
Rejection
|
500 ns
1
2
3
4
5
6
7
8
200 ns
200 ns
±50 mV
16 ms
100 ns
100 Ω
8 to 130 ms
80 to 130 ns
95 to 105 Ω
-400 mV
100 Ω
-350 to -450 mV
95 to 105 Ω
10Base-2 MAU
10Base-2 MAU Slim-Line
10Base-T MAU
10Base-T MAU
10Base-T MAU Slim-Line
300 mV
P OW E R C H A R AC T E R I S T I C S
Breakdown Voltage
AT-MX10/AT-MX10S
500 V rms 50/60 Hz for 1 min
AT-MX20T/AT-210T/AT-210TS
1500 V rms 50/60 Hz for 1 min
Supply:
|Typical
|Range
Voltage
Current
12 V
300 mA
11.4 to 12.6 V
500 mA
P H YS I C A L C H A R AC T E R I S T I C S
Standard
6.4 cm x 4.6 cm x 2.0 cm
(2.5 in x 1.8 in x 0.8 in)
6.9 cm x 4.3 cm x 2.5 cm
(2.7 in x 1.7 in x 1.0 in)
Allied Telesyn International
and Affiliate Locations
Weight:
Standard
Slim-line
70 g (2.4 oz)
73 g (2.5 oz)
Typical
|
Range
Temperature:
-0.1 V
1.86 Vp-p
-0.5 to 0 V
1.2 to 2.4 Vp-p
Operating
Storage
25 ns
±5 ns
Electrical/Mechanical Approvals:
T W I S T E D PA I R C O N N E C T O R ( R J 4 5 )
Pin No.
100 ns
100 ns
Description
Isolation:
Slim-line
DC Offset
AC Offset
Transmit Rise/
Fall Time
2.5 V
2.2 to 2.8 V
±1.5 ns
±2 ns
27 dB Down
Part Number
AT-MX10-05
AT-MX10S-05
AT-MX20T-05
AT-210T-05
AT-210TS-05
Dimensions:
C OA X I A L I N T E R FA C E
Input Impedance
> 100K Ω
Coaxial Tap Capacitance < 6 pf
Input/Output
Voltage:
|
Range
Receiver:
AU I I N T E R FA C E
Start-Up Delay
Steady State Delay
Signal Amplitude
|
Typical
0° to 50° C
-20° to 60° C
Relative Humidity: 5% to 80% noncondensing
EMI
Safety
FCC Class A, TUV, Vfg-B
UL, CSA, TUV-GS
Function
+TD
-TD
+RD
Not Used
Not Used
-RD
Not Used
Not Used
Canada
Germany
France
Italy
United States
United Kingdom
Japan
Singapore
Australia
Hong Kong
950 Kifer Road
Sunnyvale California 94086
USA
Telephone
Fax
408.730.0950 408.736.0100
Website Address
http://www.alliedtelesyn.com
© 1997 Allied Telesyn International Corp. All rights reserved. Information in this document is subject to change without notice. AT-View is a trademark of Allied Telesyn
International Corp. All company names, logos, and product designs that are trademarks or registered trademarks are the property of their respective owners.
617-00151-00
S-10M960918