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SMSC TMC2005-JT Datasheet

Arcnet 5 port hub controller
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ARCNET 5 Port HUB Controller
ARCNET HUB Circuit for ARCNET Protocol
(Data Rate From 156.25Kbps to 10Mbps)
Able to Connect Various Transceivers Directly
Device Includes TX/RX Timing Circuit for 5 Port
Hub and Direction Control Circuit, Jitter Correct
Circuit and Noise Cancel Circuit
Easy to Design 8 or 12 Port Hub
When configuring a network, the maximum number of nodes and the maximum cable length are limited by the electric
capacity of the transceiver. In this case, the network is expanded by an equipment called a "HUB" or "repeater". It
maybe necessary to have a converter between coax, T/P and the fiber cable. It is easy to design a HUB or a repeater
because the TMC2005 has various features for expanding such network.
It can connect with HYC9088, RS485 transceiver, HYC5000/4000/2000 and TTL interface for optical module. It can
connect with three different transceivers at the same time and convert the media of each. (The data rate cannot be
converted. It is necessary to operate all nodes in the same network at the same data rate). The Hubs can be
expanded by connecting two or more TMC2005 chips. By setting one of 5 ports to open-drain output, the Hub can be
expanded to either 12 or 16 ports.
TMC2005-JT for 64 pin, TQFP Lead-Free RoHS Compliant Package
SMSC TMC2005-JT

FEATURES

GENERAL DESCRIPTION

ORDERING INFORMATION
Order Number(s):
DATASHEET
TMC2005-JT
Can Connect with HYC9088 in Normal Mode
Can Connect with RS485 Transceiver,
HYC5000/4000/2000, Opt Module and TTL
Interface in Backplane Mode
Supports both Normal and Backplane Mode at
the Same Time for Media Conversion
+ 5V Single Power
Revision 1.1 (07-24-07)

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  • Page 1: Features

    TMC2005 chips. By setting one of 5 ports to open-drain output, the Hub can be expanded to either 12 or 16 ports. TMC2005-JT for 64 pin, TQFP Lead-Free RoHS Compliant Package SMSC TMC2005-JT FEATURES...
  • Page 2 Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com.

  • Page 3: Table Of Contents

    STANDARD OPERATING CONDITION ...27 DC CHARACTERISTIC - INPUT PIN ...27 DC CHARACTERISTIC - OUTPUT PIN ...28 AC CHARACTERISTIC - CLOCK AC CHARACTERISTIC – R X WAVEFORMS AND TMC2005-JT 64 PIN TQFP PACKAGE OUTLINE ...31 SMSC TMC2005-JT TABLE OF CONTENTS ...11 ...11 ...20 ETUP ...20...

  • Page 4: Pin Configuration

    17 18 19 20 21 22 23 24 25 26 27 28 29 30 Revision 1.1 (07-24-07) PIN CONFIGURATION TMC2005-JT Page 4 DATASHEET VSS7 nPULSE1 nPULSE2 nP1BAK VDD5 nCKOEN nRST VSS6 nBJA nBJB nBJE nMBA nMBB nMBE nEXTOD SMSC TMC2005-JT...

  • Page 5: Block Diagram

    RXINB0 RXINB1 Circuit EXTRX Circuit RXFLT Clock Multiplier XTLO XTLI AVDD AVSS nRST CKM0 CKM2 AVSS CKM1 nPLLTST SMSC TMC2005-JT BLOCK DIAGRAM nBJB nMBE nMBA nBJE nBJA nMBB Circuit Circuit Direction Control Circuit Circuit DPLL Circuit nCKOEN Page 5 DATASHEET...

  • Page 6: Description Of Pin Functions

    1:normal mode) Ground INPUT Internal reset signal (active Low) INPUT Enable of CKO output. Page 6 DATASHEET NOTE Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up SMSC TMC2005-JT...

  • Page 7: Datasheet

    RX Port RX Port Polar Assignment TX Port TX Control TX Port TX Data Output TX Port SMSC TMC2005-JT DESCRIPTION Power Supply. OUTPUT nPULSE1 output (for backplane mode). OUTPUT nPULSE2 output (for normal mode). OUTPUT nPULSE1 output (for normal mode) Ground...

  • Page 8: Operating Mode Setup

    Setup the mode of TXENA [0:1], TXENB [0:1], EXTTX. 0: Output TX pulse. (It is equivalent to nTXEN “OR” nP1BAK) 1: Output TX enable SPEED 156.25 Kbps 312.5 Kbps 625 Kbps 1.25 Mbps 2.5 Mbps 5 Mbps Reserved Reserved 10 Mbps port. SMSC TMC2005-JT...

  • Page 9: Other Signals

    SYSTEM RESET INTERFACE TEST PIN TEST PIN TEST PIN TEST PIN POWER SUPPLY GROUND SMSC TMC2005-JT INPUT/ OUTPUT INPUT Test pin for PLL. Must always connect to VDD. Analog power supply Using PLL: Analog power supply. There are some limits on PCB pattern.

  • Page 10: Operational Description

    The capability of the jitter filtering is shown below. DATA RATE 10Mbps 5Mbps 2.5Mbps 1.25Mbps 625Kbps 312.5Kbps 156.25Kbps Revision 1.1 (07-24-07) OPERATIONAL DESCRIPTION CAPABILITY OF JITTER FILTERING ± 25nS ± 50nS ± 100nS ± 200nS ± 400nS ± 800nS ± 1.6uS Page 10 DATASHEET SMSC TMC2005-JT...

  • Page 11: Datasheet

    RXIN (Active High) Ideal waveform dead band RXIN edge reference position: Generated by adjacent phase of SYNC character (1,1,0) SMSC TMC2005-JT - Dead band at Noise cut mode (nMBx=0) RXIN (Active High) Ideal waveform RXIN edge reference position: Generated by adjacent phase of SYNC character (1,1,0)

  • Page 12: Datasheet

    Example 1: A five ports HUB with HYC4000s in backplane mode. FIGURE 1 - APPLICATION EXAMPLE Only the TMC2005 and five transceivers are indicated in the above figure. Connect the other pins adequately. Revision 1.1 (07-24-07) Page 12 SMSC TMC2005-JT DATASHEET...
  • Page 13 Example 2: A five ports HUB with HYC9088s and a optical transceiver(TODX270A) links the two physical layers; dipulse and fiber optics. FIGURE 2 - APPLICATION EXAMPLE 2 Only the TMC2005 and five transceivers are indicated in the above figure. Connect the other pins adequately. SMSC TMC2005-JT Page 13 Revision 1.1 (07-24-07) DATASHEET...
  • Page 14 Example 3: A five ports HUB with two optical transceivers, two HYC9088s, and a HYC4000 links three physical layers; fiber optics, dipulse, and AC-485. FIGURE 3 - APPLICATION EXAMPLE 3 Only the TMC2005 and five transceivers are indicated in the figure above. Connect the other pins properly. Revision 1.1 (07-24-07) Page 14 SMSC TMC2005-JT DATASHEET...
  • Page 15 Example 4: An on-board type HUB with a COM20020 and four optical transceivers in backplane mode. FIGURE 4 - APPLICATION EXAMPLE 4 Only the TMC2005 and four transceivers with the COM20020 are indicated in the above figure. Connect the other pins adequately. SMSC TMC2005-JT Page 15 Revision 1.1 (07-24-07) DATASHEET...
  • Page 16 Example 5: An on-board type HUB with a COM20020 and four RS485 transceivers. FIGURE 5 - APPLICATION EXAMPLE 5 Only the TMC2005 and four transceivers with the COM20020 are indicated in the above figure. Connect the other pins adequately. Revision 1.1 (07-24-07) Page 16 SMSC TMC2005-JT DATASHEET...
  • Page 17 Example 6: An on-board type HUB with a COM20020, two HYC4000s, and two HYC9088s links two different physical layers; dipulse and AC-485. FIGURE 6 - APPLICATION EXAMPLE 6 Only the TMC2005 and four transceivers with the COM20020 are indicated in the above figure. Connect the other pins adequately. SMSC TMC2005-JT Page 17 Revision 1.1 (07-24-07) DATASHEET...
  • Page 18 Example 7: An eight ports HUB are composed by using two TMC2005. Two TMC2005 connects the EXTTX signal with the EXTRX signal. FIGURE 7 - APPLICATION EXAMPLE 7 Only the two TMC2005s are indicated in the above figure. Connect the other pins adequately. Revision 1.1 (07-24-07) Page 18 SMSC TMC2005-JT DATASHEET...
  • Page 19 Only the four TMC2005s are indicated in the above figure. Connect the other pins adequately. Note: Use the wiring pattern length that connects between four TMC2005s by five inches or less in open-drain mode. Four TMC2005s is maximum in open-drain mode. SMSC TMC2005-JT Page 19 Revision 1.1 (07-24-07)

  • Page 20: Datasheet

    TX POLAR Active Low Active Low Active High Active High Active High Active Low Active Low Active High FIGURE 9 - POWER-ON RESET Page 20 DATASHEET EXTENSION EXTRX EXTTX nMBE nBJE nEXTOD TRANSCEIVER HYC2485S/HYC2488S Optical Transceiver HYC9088/HYC9068 RS485 Transceiver SMSC TMC2005-JT...

  • Page 21: Datasheet

    Note 5: Place 0.1 uF bypass condenser (c) within ¼ inch (~ 6.4mm) from VDD3 and VSS3. Connect the ground side of a condenser (c) at the place (*) where AVSS returns to GND plane. SMSC TMC2005-JT FIGURE 10 - PLL PATTERN LAYOUT...

  • Page 22: Method T O Connecta Crystal Clock

    The rest of input pins have pull-up resistors built in, but nPLLTST pin does not have the pull-up resistor. Clock signal cannot ditributed into the TMC2005 if nPLLTST pin is connected GND or is left open. Revision 1.1 (07-24-07) Page 22 DATASHEET SMSC TMC2005-JT...

  • Page 23: Datasheet

    TMC2005s exist between the nodes at both far ends. On the other hand, when assigning two ports for cascading connection to the same TMC2005, the number of TMC2005 in serial connection can be down to the number of HUBs plus two, which can reduce the propagation delay. SMSC TMC2005-JT Page 23 Revision 1.1 (07-24-07)
  • Page 24 NODE FIGURE 14 - CASCADE CONNECTION OF 8 PORT HUB Revision 1.1 (07-24-07) HUB2 HUB 3 TMC2005 TMC2005 TMC2005 TMC2005 HUB2 HUB 3 TMC2005 TMC2005 TMC2005 TMC2005 Page 24 DATASHEET HUB4 TMC2005 TMC2005 NODE HUB4 TMC2005 TMC2005 NODE SMSC TMC2005-JT...
  • Page 25 When connecting TMC2005 by open-drain output on a board, connecting TMC2005s must be four or less, and the data rate must be 5Mbps or slower. The pattern of open-drain output has to be as short as possible (less than 15cm). SMSC TMC2005-JT TMC2005 TMC2005...

  • Page 26: Ring Network With The Tmc2005

    HUBs in a network is less than 5.6uS (@ 2.5Mbps). The maxmimum distance between HUBs is approximiately 1000m (@ 2.5Mbps). Revision 1.1 (07-24-07) Optical Transceiver COM20020 TMC2005 Optical Fiber TMC2005 nRST TXEN TMC2005 TXEN of any port COM20020 FIGURE 16 - RING CONFIGURATION Page 26 DATASHEET COM20020 nRESET SMSC TMC2005-JT...

  • Page 27: Maximum Guaranteed Ratings

    Maximum Ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes or “glitches” on their output when the AC power is switch on or off. In addition, voltage transients on the AC power line may appear on the DC output. If this possibility exists it is suggested that a clamp circuit be used.

  • Page 28: Datasheet

    Revision 1.1 (07-24-07) CONDITION IOH=-4mA IOH=-8mA IOL=4mA IOL=8mA SYMBOL tCYC tCDF -100 ttRSW FIGURE 17 - CLOCK AND RESET Page 28 DATASHEET UNIT 1,9,46,51, 55,61 11,45,47 1,9,46,51, 55,61 11,45,47 UNIT CONDITION Note 1 Note 1 Note 1 Note 1 SMSC TMC2005-JT...

  • Page 29: Datasheet

    RXIN First Active Edge to nP1BAK/TXEN First Active Edge nP1BAK/TXEN Low Pulse Width nP1BAK/TXEN High Pulse Width nP1BAK/TXEN Period RXIN Active Edge to nP1BAK/TXEN Active Edge (Except First Edge of RXIN) SMSC TMC2005-JT MARK (400) 2/8Tdr (100) 111/8Tdr 112/8Tdr+50 (5,550)
  • Page 30 3/4Tdr (300) (400) Page 30 DATASHEET UNIT REMARK 10/8Tdr+50 Note3 (Value at 2.5Mbps) (550) (Value at 2.5Mbps) (Value at 2.5Mbps) (Value at 2.5Mbps) 14/8Tdr+50 Note3 (Value at 2.5Mbps) (750) (Value at 2.5Mbps) (Value at 2.5Mbps) (Value at 2.5Mbps) SMSC TMC2005-JT...

  • Page 31: Tmc2005-Jt 64 Pin Tqfp Package Outline

    TMC2005-JT 64 PIN TQFP PACKAGE OUTLINE SYMBOL SMSC TMC2005-JT MIN (mm) TYP (mm) MAX (mm) 11.8 12.0 12.2 10.0 10.1 11.8 12.0 12.2 10.0 10.1 1.25 typ 1.25 typ Page 31 DATASHEET ARCNET 5 Port HUB Controller Datasheet E1 E...
  • Page 32 ARCNET 5 Port HUB Controller Datasheet SYMBOL SYMBOL Revision 1.1 (07-24-07) bbb M MIN (mm) TYP (mm) 0.95 1.35 0.17 0.22 0.5 BSC 0.08 0.08 MIN (mm) TYP (mm) 0.145 0.45 Page 32 DATASHEET MAX (mm) 0.15 1.45 0.27 MAX (mm) 0.75 SMSC TMC2005-JT...

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