Intel IXF1104 manual 5.7.2Functional Descriptions, 5.7.2.1High-SpeedSerial Interface, Datasheet

IXF1104 Quad-Port 10/100/1000 Mbps Ethernet Media Access Controller

Table 30. IXF1104-to-SFP Optical Module Interface Connections (Sheet 2 of 2)

IXF1104	SFP Signal	Description	Notes
Signal Names	Names
TX_DISABLE_0:3	TX DISABLE	Transmitter disable, logic High, open	Output from the IXF1104
		collector compatible
TX_FAULT_0:3	TX FAULT	Transmitter fault, logic High, open	Input to the IXF1104
		collector compatible
RX_LOS_0:3	LOS	Receiver loss-of-signal, logic High,	Input to the IXF1104
		open collector compatible

5.7.2Functional Descriptions

5.7.2.1High-Speed Serial Interface

These signals are responsible for transfer of the actual data at 1.25 Gbps. Table 41 “Intel® IXF1104 MAC DC Specifications” on page 133 shows the data is 8B/10B encoded and transmitted differentially.

The following signals are required to implement the high-speed serial interface:

•TX_P_0:3

•TX_N_0:3

•RX_P_0:3

•RX_N_0:3

5.7.2.2Low-Speed Status Signaling Interface

The following Low-Speed signals indicate the state of the line through the Optical Module Interface:

•MOD_DEF_0:3

•TX_FAULT_0:3

•RX_LOS_0:3

•TX_DISABLE_0:3

•MOD_DEF_INT

•TX_FAULT_INT

•RX_LOS_INT

5.7.2.2.1MOD_DEF_0:3

MOD_DEF_0:3 are direct inputs to the IXF1104 and are pulled to a logic Low level during normal operation, indicating that a module is present for each channel respectively. If a module is not present, a logic High is received, which is achieved by an external pull-up resistor at the IXF1104 device pad.

Datasheet 107

Document Number: 278757

Revision Number: 007

Revision Date: March 25, 2004