lcp-1250rj3sr-l Delta Electronics, Inc., lcp-1250rj3sr-l Datasheet - Page 4

• Manufacturer Part Number: lcp-1250rj3sr-l
• Description: Rohs Compliant Copper Small Form-factor Pluggable Sfp Transceiver For Gigabit Ethernet With Rx-los Indicator
• Manufacturer: Delta Electronics, Inc.

Pin Function Definitions
Plug Seq.: Pin engagement sequence during hot plugging.
Notes:
1)
2)
3)
4)
5)
6)
DELTA ELECTRONICS, INC.
Pin Num.
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
TX Fault is not supported and tied to ground.
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):
(>0.8, < 2.0V):
High (2.0 – 3.465V):
Open:
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.
LOS (Loss of Signal) is
indicates
optical SFP applications.
VeeR and VeeT are internally connected within the copper SFP.
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.
MOD-DEF2
MOD-DEF1
MOD-DEF0
Rate Select
TX Disable
link-down, LOW is linkup status. The LOS signal operation on copper SFP transceiver differs from
TX Fault
Name
VeeR
VeeR
VeeR
VeeR
VeeT
VccR
VeeT
VeeT
VccT
LOS
RD+
TD+
RD-
TD-
Transmitter Ground
Transmitter Fault Indication
Transmitter Disable
Module Definition 2
Module Definition 1
Module Definition 0
Not Connect
Loss of Signal
Receiver Ground
Receiver Ground
Receiver Ground
Inverse Received Data Out
Received Data Out
Receiver Ground
Receiver Power
Transmitter Power
Transmitter Ground
Transmitter Data In
Inverse Transmitter Data In
Transmitter Ground
It should be, pulled up with a 4.7K – 10KΩ resistor on the host
the indicator signal of 1000BASE-T link-up/ link-down
Transmitter on
Undefined
Transmitter Disabled
Transmitter Disabled
Function
- 4 -
Plug Seq.
1
3
3
3
3
3
3
3
1
1
1
3
3
1
2
2
1
3
3
1
open
Note 5
Note 1 - Function not available
Note 2 - Module disables on high or
Note 3 - Two-wire serial ID interface
Note 3 - Two-wire serial ID interface
Note 3 - grounded in module
Function not available
Note 4 - Function not available
Note 5
Note 5
Note 5
Note 6
Note 6
Note 5
Note 7 - 3.3V ± 5%
Note 7 - 3.3V ± 5%
Note 5
Note 8
Note 8
Note 5
status. HIGH outputted of LOS
LCP-1250RJ3SR-L
www.deltaww.com
board.
Oct
Notes
.
2007 Rev. 1.02