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USER MANUAL

ET100/NRZ

Synchronous WAN Ethernet Bridge

10/100Base-TX Ethernet over NRZ

CTC Union Technologies Co., Ltd.

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Summary of Contents for ET100/NRZ

Page 1: ...USER MANUAL ET100 NRZ Synchronous WAN Ethernet Bridge 10 100Base TX Ethernet over NRZ CTC Union Technologies Co Ltd ...

Page 2: ......

Page 3: ...rk 8F No 60 Zhouzi Street Neihu Taipei 114 Taiwan ET100 NRZ Ethernet WAN Bridge User Manual Version 1 0 July 1 2008 Release This manual supports the following models ET100 NRZ Ethernet WAN Bridge All specifications subject to change without notice ...

Page 4: ...er purchase or use a CTC Union product for any such unintended or unauthorized application the Buyer shall indemnify and hold CTC Union Technologies and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages expenses and reasonable attorney fees arising out of either directly or indirectly any claim of personal injury or death that may be associat...

Page 5: ...res 7 1 2 Specifications 7 1 3 Functional Block Diagram 9 1 4 Unit Detail 10 1 5 Theory of Operation 12 1 6 DIP Switch Setting Tables 13 1 6 1 Data Rate Settings 13 1 6 2 Interface Settings 14 1 6 3 LAN Bridge Settings 14 1 7 Clocking Examples 15 ...

Page 6: ...Table of Contents ii This page left blank intentionally ...

Page 7: ... and LAN line speeds Built in nx64K timing clock generator for WAN link 1 2 Specifications LAN Standard Fully compliant with IEEE 802 3 802 3u Connector Shielded RJ 45 Speeds 10BASE T 100BASE TX Auto Full or Half Duplex Frames Supports 64 to 1536 byte packet lengths supports 802 1Q pass through WAN Interface Fixed type NRZ interface Impedance 50 Ohms Logic 1 0V 0 3V Logic 0 1 5V 0 3V Connector fou...

Page 8: ... unlink Receive Green OFF No LAN receive event ON LAN receive event Transmit Green OFF No LAN transmit event ON LAN transmit event 100M Green OFF 10Base T ON 100Base TX Full Green OFF Half duplex ON Full duplex Error Red OFF No LAN error event ON LAN error event Test Red OFF No loop back ON Loop back enable Loop back When the Loop back push button switch is depressed Received timing and data are l...

Page 9: ...ansceivers Figure 2 ET100 NRZ Functional Block Diagram SYNC HDLC CONTROLLER Full Duplex Half Duplex Ext clock Int clock FILTER ENGINE plus 256 MAC Address Table WAN SIDE 4 x BNC Female LAN SIDE RJ 45 Clock Source IEEE802 3u I F Link LED LAN Tx LED LAN Rx LED WAN Tx LED WAN Rx LED Auto MDIX Phy TX TClk RX RClk ...

Page 10: ...ET100 NRZ LAN WAN Bridge 1 4 Unit Detail 4 5 6 7 8 9 10 11 3 2 1 Figure 3 ET100 NRZ Front Panel Detail 15 22 16 11 17 18 19 20 21 12 13 14 Figure 4 ET100 NRZ Unit Detail 10 ...

Page 11: ...uplex Off is Half Duplex 9 Ethernet Error LED Red when on indicates an error condition on the Ethernet interface 10 Test LED Red when on indicated that the Loop back test is active 11 Loop back This pushbutton switch is used to initiate NRZ loopback towards the remotely connected device 12 SW2 configuration DIP switch refer to setting tables 13 SW3 configuration DIP switch refer to setting tables ...

Page 12: ...low control The ET100 NRZ utilizes both Ethernet Bridging and HDLC encapsulation to provide a connection between LANs over bit stream architectures The LAN side of the ET100 NRZ receives an Ethernet packet and examines its destination MAC address If it knows the MAC is on the local network then it simply drops the packet Otherwise if it knows the packet destination is on the remote side or if it c...

Page 13: ... OFF OFF OFF 64K ON OFF OFF OFF OFF 128K OFF ON OFF OFF OFF 192K ON ON OFF OFF OFF 256K OFF OFF ON OFF OFF 320K ON OFF ON OFF OFF 384K OFF ON ON OFF OFF 448K ON ON ON OFF OFF 512K OFF OFF OFF ON OFF 576K ON OFF OFF ON OFF 640K OFF ON OFF ON OFF 704K ON ON OFF ON OFF 768K OFF OFF ON ON OFF 832K ON OFF ON ON OFF 896K OFF ON ON ON OFF 960K ON ON ON ON OFF 1024K OFF OFF OFF OFF ON 1088K ON OFF OFF OFF...

Page 14: ... OFF Normal Postive edge 8 ON Invert Negative edge Scramble Descramble setting must be the same on both units in the link Table 2 DIP settings for NRZ Interface Configuration 1 6 3 LAN Bridge Settings SW4 SW STATE Function 1 2 Memory Buffer configuration OFF OFF LAN to WAN 308 packets WAN to LAN 32 packets OFF ON LAN to WAN 170 packets WAN to LAN 170 packets ON OFF LAN to WAN 32 packets WAN to LAN...

Page 15: ...ffer is divided equally between LAN to WAN and WAN to LAN packet traffic When the LAN is Fast Ethernet and the WAN connection is slow the buffer may be better utilized by applying a greater portion to the LAN to WAN packet traffic In this case set both SW4 1 2 to OFF This will provide a 9 to 1 buffer division for LAN to WAN versus WAN to LAN buffer and should increase utilization 1 7 Clocking Exam...

Page 16: ... rate is set by DIP switch for n x 64 The slaved unit uses PLL Phase Locked Loop timing to recover the clock from the received NRZ data stream In environments where there may be long data streams of all zeros the PLL recovered clocking may not be stable This can be corrected by enabling the scrambling function on both units The scrambling function will ensure that the data stream has adequate puls...

Page 17: ...ies Inc Fax 886 2 27991355 Tel 886 2 26591021 Attn Technical Support Department E mail support ctcu com From Company Name Tel Fax MODEL ET100 NRZ ACTIVITY As attached in DIP switch setting table SYS CONFIGURATION Question ...

Page 18: ...ck Rate Internal SW2 6 8 reserved SW3 1 Rx Timing Setting X SW3 2 Rx Timing Setting X SW3 3 Tx Timing Setting X SW3 4 Tx Timing Setting X SW3 5 Rx Timing Phase X SW3 6 Tx Timing Phase X SW3 7 NRZ Scramble mode X SW3 8 Tx Data Latch X SW4 1 Bridge Buffer Conf X SW4 2 Bridge Buffer Conf X SW4 3 MDIX Setting X SW4 4 10 100Base manual X SW4 5 Full Half Duplex manual X SW4 6 auto negotiation manual X S...

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Page 20: ...nologies Co Ltd Far Eastern Vienna Technology Center Neihu Technology Park 8F No 60 Zhouzi Street Neihu District Taipei 114 Taiwan Phone 886 2 2659 1021 Fax 886 2 2799 1355 E mail info ctcu com Url http www ctcu com ...

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