Delta Electronics LCP-1250RJ3SR-L specifications Pin Function Definitions

					LCP-1250RJ3SR-L
Pin Function Definitions
Pin Num.	Name		Function	Plug Seq.	Notes
1	VeeT	Transmitter Ground		1	Note 5
2	TX Fault	Transmitter Fault Indication		3	Note 1 - Function not available
3	TX Disable	Transmitter Disable		3	Note 2 - Module disables on high or
					open
4	MOD-DEF2	Module Definition 2		3	Note 3 - Two-wire serial ID interface
5	MOD-DEF1	Module Definition 1		3	Note 3 - Two-wire serial ID interface
6	MOD-DEF0	Module Definition 0		3	Note 3 - grounded in module
7	Rate Select	Not Connect		3	Function not available
8	LOS	Loss of Signal		3	Note 4 - Function not available
9	VeeR	Receiver Ground		1	Note 5
10	VeeR	Receiver Ground		1	Note 5
11	VeeR	Receiver Ground		1	Note 5
12	RD-	Inverse Received Data Out		3	Note 6
13	RD+	Received Data Out		3	Note 6
14	VeeR	Receiver Ground		1	Note 5
15	VccR	Receiver Power		2	Note 7 - 3.3V ± 5%
16	VccT	Transmitter Power		2	Note 7 - 3.3V ± 5%
17	VeeT	Transmitter Ground		1	Note 5
18	TD+	Transmitter Data In		3	Note 8
19	TD-	Inverse Transmitter Data In		3	Note 8
20	VeeT	Transmitter Ground		1	Note 5

Plug Seq.: Pin engagement sequence during hot plugging.

Notes:

1)TX Fault is not supported and tied to ground.

2)TX disable is an input that is used to reset the chip of Gigabit Ethernet PHY inside the copper SFP. It is pulled up within the module with a 4.7 – 10 K Ω resistor.

Low (0 – 0.8V):	Transmitter on
(>0.8, < 2.0V):	Undefined
High (2.0 – 3.465V):	Transmitter Disabled
Open:	Transmitter Disabled

3)These are the module definition pins. They should be pulled up with a 4.7K – 10KΩ resistor on the host board. The pull-up voltage shall be VccT or VccR. MOD-DEF 0 is grounded in the module to indicate that the module is present. MOD-DEF 1 and MOD-DEF 2 are the clock and data lines of the two-wire serial interface, respectively.

4)LOS (Loss of Signal) is the indicator signal of 1000BASE-T link-up/ link-down status. HIGH outputted of LOS indicates link-down, LOW is linkup status. The LOS signal operation on copper SFP transceiver differs from optical SFP applications. It should be, pulled up with a 4.7K – 10KΩ resistor on the host board.

5)VeeR and VeeT are internally connected within the copper SFP.

6)RD+ and RD- are the received differential outputs, and they are AC-coupled 100Ω differential lines that should be terminated with 100Ω (differential) at user’s SERDES. The AC coupling is done inside the copper SFP and thus not required on the host board. The differential voltage swing will be between 250mV and 625 mV, while properly terminated.

	Oct. 2007 Rev. 1.02
	- 4 -
DELTA ELECTRONICS, INC.	www.deltaww.com