MYSON MTD907 Datasheet

MYSON

This datasheet contains new product information. Myson Technology reserves the rights to modify the product specification without notice.

shaping function. The integrated encoder/decoder conforms to IEEE802.3 standards and provides all needed

TECHNOLOGY

MTD907

Ethernet Encoder/decoder and 10BaseT

Transceiver with Built-in Waveform Shaper

FEATURES

• Pin-out and functionally compatible with Level One LXT907.

• Built-in UTP waveform shaping function - no external filters required.

• Integrated Manchester encoder/decoder.

• 10Base-T compliant transceiver and AUI transceiver.

• Full duplex capability.

• Automatic and manual interface selection (AUI/TP).

• Automatic TP polarity detection and correction.

• Heartbeat enable/disable function and jabber disable function.

• Drives 4 LED status indicators.

GENERAL DESCRIPTION

MTD907 is an integrated Ethernet Endec and 10Base-T transceiver with built-in UTP transmission waveform

active circuitry with which to interface the majority of IEEE802.3-conforming controllers to either the 10Base-T media or attachment unit interface (AUI). The functions provided by MTD907 include Manchester encoding/decoding, jabber detection, automatic media selection, reception squelch and transmission waveform shaping, automatic UTP polarity detection and correction for the UTP media.

BLOCK DIAGRAM

MD0, MD1

TXC

TXC, TXE

CRS, RXC,

RXD

COL, JAB

DSQ

LEDR, LEDL,

LEDC, LEDT

JAB, PLR

RLD,

RJAB,

RCMPT

TST

TRST

MODE

CONTROL

MANCHESTER

CODER/

DECODER

COLLISION

LOGIC

LED/STATUS

LOGIC

REMOTE

SIGNALING

TEST LOGIC

AUT

LBK

PAULTE

MEDIA

SELECTION

AND

CONTROL

XCAL

OSC

WAVEFORM

SHAPING

LINKTEST POLARITY

DETECT

REFERENCE Circuit

AMP

AC/DC

SQUELCH

AMP

AC/DC

SQUELCH

TPA, TPB

TNA, TNB

RDP

RDN

NTH

DOP

DON

DIP, CIP

DIN, CIN

X2 X1

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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MTD907 Revision 4.5 01/23/1997

MYSON

Transmit Clock

TECHNOLOGY

1.0 PIN CONNECTION

44-pin PLCC

RLD

LTE

JAB TST TXC TXD TXE

X2 COL AUT

MD1

MD0

NTH

CIN

CIP

VDD1

DON

DOP

6 5 4 3 2 1 44 43 42 41 40

18 19 20 21 22 23 24 25 26 27 28

MTD907

44-pin PLCC

LEDL

LEDT

LEDR

LEDC

LBK

VSS1

TRST

RXD

RCMPT

DIN

DIP

CRS

MTD907

PAU

RDN RDP DSQ TNB TNA VDD2 VSS2 TP A TP B PLR RJAB

RXC

1.0 PIN DESCRIPTIONS

No Symbol I/O Name Description

134VDD1

VDD2

23CIP

CIN

4 NTH I Normal

56MD0

MD1

7 RLD O Remote Link

8 LTE I Link Test

9 JAB O Jabber

10 TST I Test Active high input internally pulled low. This pin is used in

11 TXC O

12 TXD I Transmit Data Input signal, NRZ data from the controller. 13 TXE I Transmission

1415X1

16 COL O Collision

- Positive Power Supply

IICollision Input

Pair

Threshold

IIMode

Selection

Down

Enabler

Indicator

Enabler

OICrystal

Oscillator

Detection

+5 Volt power supplies.

AUI transceiver CI circuit differential input pair.

Active high input, selects normal TP input threshold; when NTH=0, the TP input threshold is reduced 4.5dB. Mode selection pins. Determines controller compatibility mode: mode 00 is for AMD, 01 for Intel, 10 for Fujitsu, 11 for NSC. Active high output. Signifies when the remote port is in link down condition. Active high input. Enables the link test when high; when low, disables the TP link test. Active high output. High output indicates jabber condition.

test mode only. 10 MHz clock output. Should be directly connected to the controller to synchronize transmission operation.

Active high input. Enables data transmission and begins jabber timer; should be synchronized with TXC by the controller. Built-in crystal oscillator. A 20 MHz crystal must be connected across these 2 pins or an external clock must be applied to X2 with X1 left open. Output signal; drives controller collision detection input.

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MYSON

shorted together with a 24.9W 1% to match the 100

TECHNOLOGY

17 AUT I Automatic Port

Selection

18 LEDR/

JABDIS

19 LEDT/

PWDN

20 LEDL/

LPSS

21 LEDC/

FDX

22 LBK I Loopback Active high input; enables internal loopback mode. 2333VSS1

VSS2

24 TRST I Test Mode

25 RCMPT O Remote

26 RXD O Received Data Output signal; recovers received data. Should be

27 CRS O Carrier Sense Output signal; detects incoming network traffic. Should

28 RXC O Received

29 RJAB O Remote

30 PLR O Polarity

TPB

TPA

TNA

TNB

37 DSQ I Disable SQE Active high input. When driven high, selects MTD907 for

3839RDP

RDN

40 PAU I Select

4142DIP

DIN

4344DOP

DON

OIReceive LED,

Disable Jabber

OITransmit LED,

Power Down

OILink LED,

Link Pass

OICollision LED,

Full Duplex

- Negative Power Supply

Reset

Compatible

Clock

Jabber

Reversal

Twisted-pair

Transmission

Pairs A & B

IIReceive Data

Input Pair (TP)

Port/AUI

IIAUI Reception

Pair

OOAUI

Transmission Pair

Active high input. When active, MTD907 defaults to the AUI port if the TP link test fails. If driven low, the port selection is determined by the PAU pin. Active low output driver for receiving the LED indicator. The LED 'on’ time is extended by at least 80 ms. When externally tied or driven low, disables the internal jabber timer. Active low output driver for LED transmission indicator. The LED 'on’ time is extended by at least 80ms. When externally tied or driven low, forces MTD907 into power-down state. Active low output driver for link integrity LED indicator. When externally tied or driven low, forces MTD907 into 'link pass' state. Active low output driver for collision indicator LED. The LED on time is extended by at least 80 ms. When externally tied low, enables MTD907 for full duplex operation by disabling internal TP loopback and TP collision detection functions.

Power supply ground.

Active high test mode reset signal. Only recognized in test mode (TST pin high) and internally pulled low. Active high output; indicating TP transceiver at the remote end is compatible with remote signaling.

connected directly to controller.

be connected directly to controller. Output signal; recovers received clock. Should be connected directly to controller. Active high output signal; indicates when the remote end is in jabber state. Active high output signal; indicates when the TP polarity is reversed. Two differential driver pairs (A and B) for the TP cable. The outputs are pre-equalized, thus no external filters are required. The TPX pins and TNX pins must be

impedance.

hub/switch/repeater operation by disabling signal quality test (heartbeat). Differential input pair for TP cable. The reception filter is integrated on-chip. No external filter is required. Recognized only if the AUT pin is low. PAU=1 selects AUI port, PAU=0 selects TP port. It is recommended that you tie this pin to ground if driving AUT pin high. Differential input pair from the AUI transceiver DI circuit.

Differential output pair to the AUI transceiver DO circuit.

MTD907

W TP

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MYSON

Output Rise Time (TXC, RXC)

X2 Duty Cycle (external clock)

TECHNOLOGY

MTD907

2.0 CONTROLLER COMPATIBILITY MODE DESCRIPTIONS

Mode Controllers: MD0 MD1

1 Advanced Micro Devices AM7990 or compatible controllers. 0 0 2 Intel 82586 or 82596, or compatible controllers. 0 1 3 Fujitsu MB86950 or MB86960, Seeq 8005 or compatible continuous

clock-type controllers.

4 National Semiconductor 8390, TI TMS380C26 or compatible controllers. 1 1

1 0

3.0 ABSOLUTE MAXIMUM RATINGS

DC Supply Voltage (Vcc) -0.5V to +7V DC Input Voltage (Vin) -0.5V to Vcc+0.5V

Storage Temperature -65oC to 150oC

Operating Temperature 0oC to 70oC

4.0 OPERATING CONDITIONS

Parameter Symbol Min Typ Max Unit Test Conditions

Power Supply Voltage Vcc 4.75 5 5.25 V Operating Temperature Top 0 - 70

Icc - 35 55 mA Idle

Supply Current

Icc - 60 80 mA Transmitting on TP Icc - 50 70 mA Transmitting on AUI Icc - 3 6 mA Power-down mode

5.0 ELECTRICAL CHARACTERISTICS (under operating conditions)

Parameter Symbol Min Typ Max Unit Test Conditions

Input Low Voltage V Input High Voltage V Output Low Voltage V Output High Voltage V Output Low Voltage (LED) V

Output Fall Time (TXC, RXC)

X2 Rise Time (external clock) - - - 10 ns

- - 50/50 40/60 %

- - 0.8 V

2.0 - - V

- - 0.4 V Iol=1.6mA

2.4 - - V Iol=40uA

- - 0.7 V Iol=10mA

- 3 12 ns Cload=20pF

- 2 8 ns TTL load

- 3 12 ns Cload=20pF

- 2 8 ns TTL load

6.0 AUI ELECTRICAL CHARACTERISTICS (under operating conditions)

Parameter Symbol Min Typ Max Unit Test Conditions

Input Low Current I Input High Current I Differential Output Voltage V Differential Squelch Threshold V

- - -700 uA

- - 500 uA 550 - 1200 mV 150 220 350 mV 5 MHz square wave

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MYSON

Transmit Output Impedance

TECHNOLOGY

MTD907

7.0 TP ELECTRICAL CHARACTERISTICS (under operating conditions)

Parameter Symbol Min Typ Max Unit Test Conditions

Zout - 5 -

Peak Differential Output Voltage Transmit Timing Jitter Addition Transmit Timing Jitter Added by MAU and PLS Sections Receive Input Impedance Zin - 20 -

Differential Squelch Threshold

Vod 3.3 3.5 3.7 V

- - 6.4 10 +/-

- - 3.5 5.5 +/-nsAfter IEEE 802.3-

Vds 300 420 585 mV 5MHz square wave

Vds 180 250 345 mV 5MHz square wave

Load=100 W

Internal MAU

specified TP line model

Between input pairs

input, NTH=1

input, NTH=0

8.0 SWITCHING CHARACTERISTICS (under operating conditions)

Jabber Timing:

Parameter Symbol Min Typ Max Unit

Maximum Transmission Time before Jabber - 20 - 150 ms Unjab Time - 250 - 750 ms

Link Integrity Pulse Timing:

Parameter Symbol Min Typ Max Unit

Link Loss Time - 63 - 64 ms Transmit Link Integrity Timing - 8 - 24 ms Receive Link Integrity Pulse Timing - 3.1 - 63 ms

Start-of-Frame Timing, AUI

Parameter Symbol Min Typ Max Unit

Decoder Acquisition Time t CD Turn-on Delay t

Start-of-Frame Timing, TP

Parameter Symbol Min Typ Max Unit

Decoder Acquisition Time t CD Turn-on Delay t

RXC Timing

Parameter Symbol Typ

Receive Data Setup from RXC t Receive Data Hold from RXC t RXC Shut-off Delay from CRS

Assertion RXC Hold after CRS Turn-off t

RXD Data through Delay t CRS Turn-off Delay t RXC Switching Delay after CD Off t

CRSOFF

RDS

RDH

SWS

RCH

SWE

Min. 43 30 30 30 ns Min. 10 30 30 30 ns Typ. - - +/-100 - ns

- 8 1 - 8 bt Max. 400 375 375 375 ns Max. 500 475 475 475 ns

Typ. - - 120 - ns

DATA

Mode1Mode2Mode3 Mode

- 700 1100 ns

- 50 200 ns

- 1000 1700 ns

- 400 550 ns

Unit

MTD907 Revision 4.5 01/23/1997

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MYSON MTD907 Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual