Pin DescriptionPinLogicSymbolName/DescriptionNote1GNDGround12CML-ITx2nTransmitter Inverted Data Input3CML-ITx2pTransmitter Non-Inverted Data output4GNDGround15CML-ITx4nTransmitter Inverted Data Output6CML-ITx4pTransmitter Non-Inverted Data Output7GNDGround18LVTTL-IModSelLModule Select9LVTTL-IResetLModule Reset10VccRx 3.3V Power Supply Receiver211LVCMOS-I/OSCL2-Wire Serial Interface Clock12LVCMOS-I/OSDA2-Wire Serial Interface Data13GNDGround114CML-ORx3pReceiver Inverted Data Output15CML-ORx3nReceiver Non-Inverted Data Output16GNDGround117CML-ORx1pReceiver Inverted Data Output18CML-ORx1nReceiver Non-Inverted Data Output19GNDGround120GNDGround121CML-ORx2nReceiver Inverted Data Output22CML-ORx2pReceiver Non-Inverted Data Output23GNDGround124CML-ORx4nReceiver Inverted Data Output25CML-ORx4pReceiver Non-Inverted Data Output26GNDGround127LVTTL-OModPrsLModule Present28LVTTL-OIntLInterrupt29VccTx 3.3V Power Supply Transmitter230Vcc1 3.3V Power Supply231LVTTL-ILPModeLow Power Mode32GNDGround133CML-ITx3pTransmitter Inverted Data Output34CML-ITx3nTransmitter Non-Inverted Data Output35GNDGround136CML-ITx1pTransmitter Inverted Data Output37CML-ITx1nTransmitter Non-Inverted Data Output38GNDGround1 Notes: GND is the symbol for singleand supply(power) common for QSFP modules, All are common within the QSFP module and all module voltages are referenced to this potential otherwise Connect these directly to the host board signal common ground plane. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.VccRx, Vcc1 and VccTx are the receiver and transmitter power suppliers and shall be applied concurrently. Recommended host board power supply filtering is shown below. VccRx, Vcc1 and VccTx may be internally connected within the QSFP transceiver module in any combination. The connector pins are each rated for maximum current of 500mA.
