Emerson RTM-ATCA-F125, Installation And Use Instruction

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Functional Description
RTM-ATCA-F125 Installation and Use (6806800K30C )
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4.3.3 SFP Connection
The SFP sites allow the fitting of a wide range of third-party SFP modules to support 1000Base-
T, long and short range optical connection. Refer to the ATCA-F125 Installation and Use Manual
for a list of SFP devices tested with this product.
The following table shows the SFP connector pin assignments.
4.3.3.1 I2C Bus
The SFP I2C bus signals (I2C_SDA and I2C_SCL) from each SFP site are individually connected
to the RTM FPGA. An I2C controller within the FPGA allows the front-blade service processor to
access these ports to obtain SFP status and diagnostic information. Refer to the
Chapter 4,
FPGA, on page 44 for details.
4.3.3.2 SFP Status Signals
The SFP status signals, MOD_ABS, TX_FAULT and LOS, are individually connected to the RTM
FPGA to allow monitoring by the service processor. Refer to the
Chapter 4, FPGA, on page 44
for details.
Table 4-5 SFP Connector Pin Assignment
Pin Signal Pin Signal
1 GND 11 GND
2 TX_FAULT 12 RX-
3 TX_DISABLE 13 RX+
4 I2C_SDA 14 GND
5 I2C_SCL 15 VCCr (+3.3V)
6 MOD_ABS 16 VCCt (+3.3V)
7 RATE_SEL 17 GND
8 LOS 18 TX+
9 GND 19 TX-
10 GND 20 GND