TMC2005-JT ARCNET 5 Port HUB Controller FEATURES ARCNET HUB Circuit for ARCNET Protocol (Data Rate From 156.
ARCNET 5 Port HUB Controller Datasheet 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2007 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given.
ARCNET 5 Port HUB Controller Datasheet TABLE OF CONTENTS FEATURES..................................................................................................................................................................1 GENERAL DESCRIPTION.......................................................................................................................................1 PIN CONFIGURATION ............................................................................................................
ARCNET 5 Port HUB Controller Datasheet MB RXINB1 LB TXENB0 SB RXINB0 VSS8 NC VDD6 TXENA1 MA RXINA1 LA TXENA0 SA RXINA0 PIN CONFIGURATION 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 TMC2005-JT VSS7 nPULSE1 nPULSE2 nP1BAK VDD5 nCKOEN nRST VSS6 nBJA nBJB nBJE nMBA nMBB nMBE nEXTOD NC RXFLT nPLLTST VDD2 XTLI XTLO VSS4 NC VDD4 VDD3 AVDD R0 LP AGS AVSS VSS3 VSS5 TXENB1
ARCNET 5 Port HUB Controller Datasheet BLOCK DIAGRAM nBJB nMBE nMBA RXINA0 RXINA1 MB NOT Circuit RXINB0 RXINB1 NOT Circuit EXTRX LB ME MA nBJE nBJA nMBB SE SB SA Direction Control Circuit NOT Circuit LE LA nEXTOD OR Circuit NOT Circuit TXENA0 TXENA1 OR Circuit NOT Circuit TXENB0 TXENB1 OR Circuit NOT Circuit HM RXFLT Output Control Circuit Rx Buffer DPLL Tx Pulse Gen.
ARCNET 5 Port HUB Controller Datasheet DESCRIPTION OF PIN FUNCTIONS PIN NO.
ARCNET 5 Port HUB Controller Datasheet PIN NO. 44 45 46 47 48 NAME VDD5 nP1BAK nPULSE2 nPULSE1 VSS7 INPUT/OUTPUT OUTPUT OUTPUT OUTPUT 49 RXINA0 INPUT 50 51 SA TXENA0 INPUT OUTPUT 52 LA INPUT 53 RXINA1 INPUT 54 55 56 57 58 MA TXENA1 VDD6 NC VSS8 INPUT OUTPUT 59 RXINB0 INPUT 60 61 SB TXENB0 INPUT OUTPUT 62 LB INPUT 63 RXINB1 INPUT 64 MB INPUT Note: DESCRIPTION Power Supply. nPULSE1 output (for backplane mode). nPULSE2 output (for normal mode).
ARCNET 5 Port HUB Controller Datasheet FEATURE NAME INPUT/OUTPUT TX Port Polarity Setup LA, LB, LE INPUT TX Port Mode Setup MA, MB, ME INPUT DESCRIPTION mode. The pulse is always active Low. Setup the polarity of TXENA [0:1], TXENB [0:1], EXTTX. 0 : active L 1: active H Setup the mode of TXENA [0:1], TXENB [0:1], EXTTX. 0: Output TX pulse.
ARCNET 5 Port HUB Controller Datasheet FEATURE NAME nPLLTST INPUT/ OUTPUT INPUT AVDD DESCRIPTION Test pin for PLL. Must always connect to VDD. Analog power supply AVSS Using PLL: Analog power supply. There are some limits on PCB pattern. Using no PLL: Power supply (+5V) same as VDD1~6. Analog ground Using PLL: Analog ground. There are some limits on PCB pattern. Using no PLL: Use a ground same as VSS1~8.
ARCNET 5 Port HUB Controller Datasheet OPERATIONAL DESCRIPTION Direction Determination All TX ports are set to disable mode in the initial state. When a signal is received from any RX ports, the circuit holds the port on receiving mode (disable TX) and changes the other ports to sending mode (disable RX). One port stays in RX and the rest change into TX after all.
ARCNET 5 Port HUB Controller Datasheet Option Feature for Jitter Filtering When any RX ports receive the bigger jitter than its allowance, the TMC2005 may fail to receive the data correctly and the network may be down.. However the below method to escape is effective for the case that a momentary big jitter occurs under a special condition like an optical transceiver.
ARCNET 5 Port HUB Controller Datasheet APPLICATION NOTES 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.
ARCNET 5 Port HUB Controller Datasheet 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 DATASHEET Revision 1.
ARCNET 5 Port HUB Controller Datasheet 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.
ARCNET 5 Port HUB Controller Datasheet 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 DATASHEET Revision 1.
ARCNET 5 Port HUB Controller Datasheet 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.
ARCNET 5 Port HUB Controller Datasheet 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 DATASHEET Revision 1.
ARCNET 5 Port HUB Controller Datasheet 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.
ARCNET 5 Port HUB Controller Datasheet Example 8: A sixteen ports HUB are composed by using four TMC2005. The EXT port between TMC2005 is made an open-drain mode and it connects it (left example). Or put standard logic IC such as 74LS20 outside (right example). This connected method is excellent in noised respect compared with connected method of open-drain mode.
ARCNET 5 Port HUB Controller Datasheet PORT GROUP The five ports can be divided into three groups (group A: two ports, group B: two ports, extension port: one port) and each group can select TX/RX polar, noise cut mode, and big jitter mode respectively.
ARCNET 5 Port HUB Controller Datasheet CONNECTING THE TMC2005 WITH INTERNAL PLL When using the TMC2005 at data rate 2.5Mbps or lower, it is not necessary to use internal PLL. Leave the loop filter pins (RO, LP) open and connect AGS to the Ground. The pins for the analog power supply (AVSS, AVDD) may connect to digital power supply. When using the TMC2005 at data rate 5Mbps or higher, the internal PLL has to be used as a clock multiplier.
ARCNET 5 Port HUB Controller Datasheet Method To Connect A Crystal Clock Connect with external parts as follows: FIGURE 11 - CONNECTING THE CRYSTAL CLOCK Note 1: When designing a printed circuit board, keep the patterns as short as possible and don’t cross with other patterns. Note 2: When using an external clock like an oscillator module, connect it to XTLI pin and leave XTLO pin open. When designing a printed circuit board, wire between XTLI pin and oscillator should be short as possible.
ARCNET 5 Port HUB Controller Datasheet CASCADING CONNECTION HUBs can be connected in cascade by using the ports as Fig. 12. In the case of cascade connection, it is necessary to consider how many HUBs can exist in serial. The maximum delay between input port and output port is 650ns @2.5Mbps at the TMC2005. It is equivalent to the propagation delay when a cable length is 135m.
ARCNET 5 Port HUB Controller Datasheet TMC2005 2 3 4 5 1 2 3 4 TMC2005 1 2 3 4 2 3 4 5 2 3 4 5 2 3 4 5 1 2 3 4 TMC2005 1 2 3 4 TMC2005 2 3 4 5 TMC2005 HUB4 2 3 4 5 HUB 3 1 2 3 4 TMC2005 2 3 4 5 TMC2005 2 3 4 5 1 2 3 4 1 2 3 4 TMC2005 HUB2 1 2 3 4 HUB 1 NODE NODE FIGURE 13 - CASCADE CONNECTION OF 8 PORT HUB NODE TMC2005 2 3 4 5 1 2 3 4 TMC2005 1 2 3 4 2 3 4 5 TMC2005 1 2 3 4 2 3 4 5 TMC2005 2 3 4 5 TMC2005 HUB4 2 3 4 5 HUB 3 1 2 3 4 1 2 3 4 1 2 3 4 TMC2005 2
ARCNET 5 Port HUB Controller Datasheet Fig.15 shows a 16 ports HUB with four TMC2005s connected by open–drain ports. When assigning two ports for cascade connection to the same TMC2005, the number of TMC2005s for serial connection can be reduced to the number of HUBs plus two.
ARCNET 5 Port HUB Controller Datasheet Ring Network With the TMC2005 The reliability of the network can be improved by connecting every node in a ring, because the communication is maintained through the reverse route even if the cable is cut at a point. However ARCNET controller alone can not support ring, because ARCNET is a half-duplex communication system. Using HUBs makes possible for ARCNET to built a ring network as in Fig.16. This configuration is available only for using fiber optics.
ARCNET 5 Port HUB Controller Datasheet OPERATIONAL DESCRIPTION MAXIMUM GUARANTEED RATINGS* Stresses above those listed may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other condition above those indicated in the operational sections of this specification is not implied.
ARCNET 5 Port HUB Controller Datasheet DC CHARACTERISTIC - OUTPUT PIN SYMBOL ITEM VOH High Level Output Voltage CONDITION IOH=-4mA MIN 2.4 2.4 VOH VOL High Level Output Voltage Low Level Output Voltage IOH=-8mA IOL=4mA VOL Low Level Output Voltage IOL=8mA AC CHARACTERISTIC - CLOCK and RESET ITEM SYMBOL Generating Static Time tx Clock Cycle tCYC Clock Frequency Deflection tCDF Clock Pulse Width tCW Reset Pulse Width ttRSW MIN MAX TYP 0.4 V V 0.
ARCNET 5 Port HUB Controller Datasheet AC CHARACTERISTIC – Rx waveforms and Tx waveforms t2 t1 RXINx (S=1) (Received port) t3 t4 t5 TXENy (M=1, L=0) * 4 ports except received port t6 t8 t7 nP1BAK /TXENy (M=0, L=0) t10 t9 * 4 ports except received port t11 t12 t13 t15 nPULSE1 t14 t16 t17 t18 nPULSE2 t19 FIGURE 18 - RX WAVEFORMS AND TX WAVEFORMS ITEMS MARK MIN TYP MAX RXIN Low Pulse Width t1 15 nS RXIN High Pulse Width t2 15 nS RXIN Period t3 Tdr UNIT REMARK nS (Value at
ARCNET 5 Port HUB Controller Datasheet ITEMS MARK RXIN First Active Edge to nPULSE1 First Active Edge t11 nPULSE1 Low Pulse Width t12 MIN TYP MAX 9/8Tdr 10/8Tdr+50 (450) (550) 1/4Tdr UNIT REMARK nS Note3 (Value at 2.5Mbps) nS (Value at 2.5Mbps) nS (Value at 2.5Mbps) nS (Value at 2.5Mbps) nS Note3 (Value at 2.
ARCNET 5 Port HUB Controller Datasheet TMC2005-JT 64 PIN TQFP PACKAGE OUTLINE D D1 Ze E1 E 64 1 Zd SYMBOL D D1 E E1 Ze Zd SMSC TMC2005-JT MIN (mm) 11.8 9.9 11.8 9.9 TYP (mm) 12.0 10.0 12.0 10.0 1.25 typ 1.25 typ Page 31 DATASHEET MAX (mm) 12.2 10.1 12.2 10.1 Revision 1.
ARCNET 5 Port HUB Controller Datasheet A2 A b SYMBOL A A1 A2 B E aaa bbb c SYMBOL c L Revision 1.1 (07-24-07) e bbb M aaa MIN (mm) TYP (mm) 0.95 1.35 0.17 0.1 1.4 0.22 0.5 BSC 0.08 0.08 A1 MAX (mm) 1.6 0.15 1.45 0.27 L MIN (mm) 0.9 0.45 TYP (mm) 0.145 0.6 Page 32 DATASHEET MAX (mm) 0.2 0.
