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  | Module Electrical Pin Function Definition  | 
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Pin  | 
  | Logic  | Symbol  | Name/Description  | Note  | |
1  | 
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  | GND | Module Ground  | [1]  | |
2  | 
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  | VEE5  | Optional   | 
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3  | 
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 | Mod_DeSel  | Module   | 
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4  | 
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 | Interrupt Bar  | Interrupt Bar; Indicates presence of an important condition  | [2]  | |
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  | which can be read over the   | 
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5  | 
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 | TX_DIS | Transmitter Disable; Turns off transmitter laser output  | 
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6  | 
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  | VCC5 | +5V Power Supply  | 
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7  | 
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  | GND  | Module Ground  | [1]  | |
8  | 
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  | VCC3 | +3.3V Power Supply  | 
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9  | 
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  | VCC3  | +3.3V Power Supply  | 
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10  | 
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 | SCL | [2]  | ||
11  | 
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 | SDA | [2]  | ||
12  | 
  | Mod_Abs  | Indicates Module is not present. Grounded in the Module  | [2]  | ||
13  | 
  | Mod_NR  | Module Not Ready; Indicating Module Operational Fault  | [2]  | ||
14  | 
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 | RX_LOS | Receiver Loss Of Signal Indicator  | [2]  | |
15  | 
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  | GND  | Module Ground  | [1]  | |
16  | 
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  | GND  | Module Ground  | [1]  | |
17  | 
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 | RD-  | Receiver Inverted Data Output  | 
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18  | 
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 | RD+ | Receiver   | 
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19  | 
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  | GND  | Module Ground  | [1]  | |
20  | 
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  | VCC2 | +1.8V Power Supply   | 
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  | Power down; When high, requires the module to limit power  | 
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21  | 
  | P_Down/RST  | consumption to 1.5W or below.   | 
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  | functional in the low power mode.  | 
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22  | 
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  | VCC2  | +1.8V Power Supply   | 
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23  | 
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  | GND  | Module Ground  | [1]  | |
24  | 
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 | RefCLK-  | Reference Clock   | 
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  | Not required  | 
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25  | 
  | RefCLK+  | Reference Clock Inverted Input, AC coupled on the host board,  | 
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  | Not required  | 
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26  | 
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  | GND  | Module Ground  | [1]  | |
27  | 
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  | GND  | Module Ground  | [1]  | |
28  | 
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 | TD-  | Transmitter Inverted Data Input  | 
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29  | 
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 | TD+ | Transmitter   | 
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30  | 
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  | GND  | Module Ground  | [1]  | |
Notes:  | 
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1. Module ground pins Gnd are isolated from the module case and chassis ground within the module.
7  | Revision: S3  | 
  | 04/10/2007  | 
DELTA ELECTRONICS, INC.  | www.deltaww.com  |