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Siemens KNX EIB TP-UART 2-IC Manual

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KNX EIB TP-UART 2-IC
GENERAL DESCRIPTION
The TP - UART - IC (Twisted Pair - Universal Asynchronous Receive Transmit - IC) is a
transceiver which supports the connection of microcontrollers of sensors, actuators, or other
applications to the EIB (European - Installation - Bus).
This module supports every transmit- and receive - function and also the high ohmic decoupling
of energy from bus line. It generates further a stabilized 3.3V or 5V supply to use by a host
controller. Up to 256 subscribers can be connected to one bus line.
An UART interface is realized for communication with a host controller. The coupling can be
realized directly or via optical couplers.
The TP - UART - IC consists of two main parts: the digital part (UART - Interface) and the analog
part (analog circuit part).
Siemens AG
Infrastructure and Cities Sector,
Building Technologies
Control Products and Systems
P. O. Box 10 09 53,
D-93009 Regensburg
Features
Signaling for standard UART (LSB-
•
First, Idle is 1)
Baud rate 9600 or 19200 for the
•
communication: TP-UART 2
– Controller
Direct coupling to host controller (TxD,
•
RxD), or via optical couplers (optional)
2-wire protocol with software
•
handshake
Buffering of sent frames
•
No critical timing during transmission
•
VCC switchable between 3.3 V
•
and 5 V
Efficiency of VCC-supply ≥ 75 %
•
I
•
VCC
Switchable V20 power supply
•
20V/25mA with limiting function
I
•
V20max
IVB+max overshoot due to load
•
changes actively limited
Operating temperature range: -25° C to
•
85° C
Small QFN36X36 package
•
pages 42
© Siemens AG 2012
Subject to change without further notice.
OEM- Product Catalogue
Release: February 2012
≤ 30mA (50 mA if no load at V20)
adjustable in steps
GAMMA instabus
Host
Technical Manual
page 1

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  • Page 1 GAMMA instabus OEM- Product Catalogue Release: February 2012 KNX EIB TP-UART 2-IC Features Signaling for standard UART (LSB- • First, Idle is 1) Baud rate 9600 or 19200 for the • communication: TP-UART 2 Host – Controller Direct coupling to host controller (TxD, •...
  • Page 2 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC GENERAL DRAWING A - Bus P o w er S u pp ly 2 30V / 5 0H z B - Bu s 3 0V TP -UA RT - TP -UA RT -...
  • Page 3 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC TABLE OF CONTENTS " # $ %& # ! % ' ! % " " /(0 ' /(1 ! 4 $ ! % (.66 # /%$! .&&$7 .&&$7 " .&&$7 .&&$7 / 2 ' 1%.!&.!
  • Page 4 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC %' %6 & # ! % A %# $ %' %6 & # ! % A $% 5 ) ) Technical Manual pages 42 Siemens AG Infrastructure and Cities Sector, Building Technologies page 4 ©...
  • Page 5 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Modes of Operation 1.1 Interface to host electronics TP - UART - IC Analog - Digital - HOST - Part Part Controller TxD3 RxD3 Normal Mode: IDLE = HIGH IDLE = HIGH...
  • Page 6 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC The ANALOG – PART 2.1 Package and Pin Definitions 2.1.1 Package Pin Assignment Figure 1 Package Pin Assignment 2.1.2 PIN DESCRIPTION 1 NC0 Used during chip test mode 2 R20 External resistor to VB- sets V20 max...
  • Page 7 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 6 VDDH SMPS control 7 SVCC VCC control 8 VCC 5.5V Clamp External power supply 3.3/5 V to VB- 9 IND SMPS-output; no external freewheeling diode 10 VB- Ground Negative bus pin, exposed pad (see Figure 5 and 7.2 Layout Guidelines)
  • Page 8 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC ' ! $ & . ! = !> & . $ $ 1 ' % = ' ! $ C = !> & . $ $ 1 .& ' ! $ %.!& . ! ' ! $ %.!&...
  • Page 9 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC voltage on pin IND -0.3 voltage on low voltage pins -0.3 +0.5 MODE0, MODE1, MODE2, MODE3, TSTIN_BDS, TESTMODE, DIV, SVCC, CTM voltage on low voltage pins TxD, -0.3 +0.5 RESn, TSTOUT_TW, X1, X2,...
  • Page 10 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC %# !> K " C@ +", / $ ' . & ! 4 $ !7 ! >. ' !7 ' # 4 ' 47 J : ! 4$ : $ ; $ <...
  • Page 11 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Symbol Parameter Unit Note energy buffer voltage VDIF voltage difference between V and V VDIF external storage capacitance µF 2) 6) ESR of external storage capacitance evaluated @ 0.70 VSP1 120Hz ESR of external storage capacitance evaluated @ 0.20...

  • Page 12: Table Of Contents

    GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Symbol Parameter Unit Note input voltage 6.25 supply voltage (generated by the ASIC) 5.0-5% 5.0+5% VCC[5] supply voltage (generated by the ASIC) 3.3-5% 3.3+5% VCC[3] external storage capacitance µF External Inductance µH...

  • Page 13: Symbol Parameter Min Max Unit Note

    GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 2.2.9 Supply Pin V20 and Pin R20 Pin V20 delivers the internally generated supply voltage to external loads. The supply is generated by a series regulator. Internal input voltage for V20 is VDDH. The V20 regulator is switched off during...
  • Page 14 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Figure 3 V20 Fallback Characteristic 2.2.10 Pin IND, SMPS-output The pin IND is the output of the switched mode power supply. Internally the node is clamped to VB-. The voltages and currents depend on the switched mode power supply concept.

  • Page 15: Supply Pin Vdp

    GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 2.2.13 Transmit Pin TxO The transmit pin is connected to VB+ via external resistor of typ. 68 Ω. Symbol Parameter Unit Note delta(V ) during active LOW pulse 1) related to VB+ Table 14 Transmit Pin TxO 2.2.14 Supply Pin VIF...
  • Page 16 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Symbol Parameter Unit Note voltage range for input low level 0.3 * VIF voltage range for input high level 0.7 * VIF hysteresis for switching level 0.1 * VIF 0.4 * VIF...

  • Page 17: Vvdpv

    GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 2.2.19 Reset Pin RESn This pin is an I/O pin with internal pullup resistor to VIF. In reset case the reset pin delivers an active LOW signal to external host electronic. The output driver is realized as open drain. The reset state RESn = LOW can be caused by an internal or by an external RESET due to forcing an active LOW to the pin RESn.
  • Page 18 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 2.2.22 Pin TSTOUT_TW TW = HIGH means: chip temperature is higher than maximum allowed value and TxO is disabled. Symbol Parameter Unit Note Output HIGH voltage VIF - 0.5 = -5 mA...
  • Page 19 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Digitalpart TP-UART 2 is at the digital interface compatible with TP-UART. This means that the same drivers and stacks can be used without modification. In addition TP-UART 2 supports some additional useful services. These services reduce the necessary performance in the microcontroller.
  • Page 20 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 3.2 UART – Interface to host controller 3.2.1 Configuration and Timing The TP-UART-IC has a full duplex UART-interface to transmit and receive KNX frames asynchronously. The baud-rate depends on the setting of BDS pin (9600 or 19200). The frame format...
  • Page 21 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC • U_ActivateBusyMode • U_ResetBusyMode • U_MxRstCnt + Repetitions • U_ActivateCRC • U_Set_Address +PhysAddressHigh +PhysAddressLow • U_L-Data Start + CTRL-Byte • U_L-Data Continue (index) + Data-Byte • U_L-Data-End + Checksum • U_PollingState (Slotnumber) + PollAddrHigh + PollAddrlow + State...

  • Page 22: Technical Manual Pages 42 Siemens Ag

    GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 3.2.3.1.2 U_State.request-Service Requests the internal communication state from the TP-UART-IC. The TP-UART-IC answers with the Communicationstate. UART-Controlfield (02 Fig. 5: U_State.request-Service 3.2.3.1.3 U_ActivateBusmon-Service Activates the busmonitormode. That means that each byte which is received on the EIB is sent through the TP-UART-IC including illegal Control-bytes and not used Immediate ACK.
  • Page 23 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 3.2.3.1.6 U_ResetBusyMode The service U_ResetBusyMode deactivates immediately the BUSY mode in the TP-UART. All addressed telegrams are answered according to the intern address flags. The host shall synchronize its receiver before sending the U_ResetBusyMode.
  • Page 24 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC - Frameformat Extended: Octet 0 Octet 1 Octet 4 Octet 5 Ctrlbyte extCtrlbyte High byte Low byte destaddress destaddress 00R1cc00 Axxx xxxx a) group (multicast) or broadcast addresses if (A == 1) then group addressed =>...
  • Page 25 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Interchargap (2Bit) Parity 1 Startbit 1 Stopbit 8 Datenbits 15 Bit Pause Addresstype TPCI Checksum Receive from Bus 6 7 p s s 0 1 2 3 4 5 6 7 p s...
  • Page 26 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 3.2.3.1.9 U_L_Data-Services The U_L_Data-Services are used to transfer the complete EIB-Linklayer-Frame (L_Data.request and L_PollData.request) to the TP-UART. If the host sends a second frame (the first frame buffer is yet active) the TP-UART rejects this and reports it with a Status.indication (PE bit set).
  • Page 27 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC HOST Ctrl-Byte Ctrl-Byte 1. Databyte 1. Databyte 2. Databyte 2. Databyte immediate Ack-Info TP-UART Chksum Chksum immediate Ack Fig. 15: TP-UART receive telegram 3.2.3.1.9.1 U_L_DataStart-Service The U_L_DataStart-Service initialize the TP-UART-IC to receive a complete EIB-Linklayer-Frame from the host.
  • Page 28 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC control field data link frame type class repeat flag FFR1 cc00 FFR1 0000 L_DATA request system set by TP-UART FFR1 1000 L_DATA request alarm set by TP-UART FFR1 0100 L_DATA request...
  • Page 29 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC The TP-UART calculates over the complete received telegram (including the Layer 2 checksum) a CRC16-CCITT with the following parameters: Width= 16 bit Truncated polynomial = 1021hex init value = FFFFh I/O not reflected no xor on output CRC Test string „123456789“...
  • Page 30 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC PollAddr Slotcount Checksum Slot 0 Receive from Bus s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s s 0 1 2 3 4 5 6 7 p s...
  • Page 31 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Control Field Layer-2 Services repeat flag = 0: repeated L_DATA frame repeat flag = 1: not repeated 2 2 2 L_DATA.req 2 2 # L_EXT_DATA.req system priority 2 2 2 2 L_POLLDATA.req...
  • Page 32 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Each L_Data-request is transmitted completely to the Host. From a L_PollData-request only the Controlbyte is transmitted to the host if the TP-UART is a polling slave. If the TP-UART is polling master the complete polling frame is transmitted to the host as well if a collision is detected during sending the polling master frame.
  • Page 33 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 3.2.3.1.12.1 TP-UART-Reset.indication Service The Reset.indication service is sent after each reset if 40 bit-times line idle was detected. TP-UART-Controlfield Fig. 29: TP-UART-Reset.indication-Service 3.2.3.1.12.2 TP-UART-ProductID.response Service The ProductIdentifier.response service is sent if a U_ProductID.request service was received from the host.
  • Page 34 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Mechanical Specification 4.1 Package ! 1 2! , # ($ % # 3 . > ' L - < < 2 9 Figure 4 Package outline, Punched QFN 6x6x0.9mm 36LD 0.5mm Lead Pitch...
  • Page 35 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Siemens AG pages 42 Technical Manual Infrastructure and Cities Sector, Building Technologies Control Products and Systems © Siemens AG 2012 page 35 P. O. Box 10 09 53, Subject to change without further notice.
  • Page 36 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Figure 6 Package notes, Punched QFN 6x6x0.9mm 36LD 0.5mm Lead Pitch Technical Manual pages 42 Siemens AG Infrastructure and Cities Sector, Building Technologies page 36 © Siemens AG 2012 Control Products and Systems Subject to change without further notice.
  • Page 37 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Tape and Reel Packing Figure 7 Tape and Reel Packing 1 Figure 8 Tape and Reel Packing 2 Siemens AG pages 42 Technical Manual Infrastructure and Cities Sector, Building Technologies Control Products and Systems ©...
  • Page 38 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Soldering Profile Symbol Parameter Value Unit Note Classification Temperature ° C Temperature min ° C Preheat/Soak smin Temperature max ° C Preheat/Soak smax Time 60-120 to T smin smax to T...
  • Page 39 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Appendix 7.1 Typical Application Circuits In all the applications circuits shown below a default value of VCC=5V is used. 7.1.1 Mode of Operation – Normal 1. recommended (close to Pins VDDH and VCC) Figure 10 Mode of Operation –...
  • Page 40 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC 7.1.2 Mode of Operation – Analog 2. recommended (close to Pins VDDH and VCC) 3. The maximum average power dissipation of the transmitting resistance R1 of 1 W is valid for an active telegram rate of 50 %.
  • Page 41 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC As close as possible to VCC and GND CBYP As close as possible to BYP and VB+ As close as possible to VSP and GND As close as possible to X1 and X2...
  • Page 42 GAMMA instabus Release: February 2012 KNX EIB TP-UART 2-IC Figure 13 Layout Topview Figure 14 Layout Bottom View Technical Manual pages 42 Siemens AG Infrastructure and Cities Sector, Building Technologies page 42 © Siemens AG 2012 Control Products and Systems Subject to change without further notice.

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