LCP-155 Delta Electronics, Inc., LCP-155 Datasheet - Page 5

• Manufacturer Part Number: LCP-155
• Description: Rohs Compliant Sfp Transceiver For Atm, Sonet Oc-3/sdh Stm-1 With Digital Diagnostic Monitoring Function
• 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 an open collector/drain output, which should be pulled up with a 4.7K – 10K resistor on the host
board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind.
Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.
TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module
with a 4.7 – 10 K Ÿ resistor. Its states are:
Low (0 – 0.8V):
(>0.8, < 2.0V):
High (2.0 – 3.465V):
Open:
Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10KŸresistor on the
host board. The pull-up voltage shall be VccT or VccR (see Section IV for further details). Mod-Def 0 is grounded
by the module to indicate that the module is present Mod-Def 1 is the clock line of two wire serial interface for
serial ID Mod-Def 2 is the data line of two wire serial interface for serial ID
LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KŸ resistor.
Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is
below the worst-case receiver sensitivity (as defined by the standard in use). Low indicates normal operation. In
the low state, the output will be pulled to < 0.8V.
VeeR and VeeT may be internally connected within the SFP module.
RD-/+: These are the differential receiver outputs. They are AC coupled 100Ÿ differential lines which should be
terminated with 100Ÿ (differential) at the user SERDES. The AC coupling is done inside the module and is thus
not required on the host board. The voltage swing on these lines will be between 370 and 2000 mV differential
(185 – 1000 mV single ended) when properly terminated.
MOD-DEF2
MOD-DEF1
MOD-DEF0
Rate Select
TX Disable
TX Fault
Name
VeeT
VeeR
VeeR
VeeR
VeeR
VccR
VeeT
VeeT
VccT
LOS
RD+
TD+
RD-
TD-
Inv. Transmit Data In
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
Inv. Received Data Out
Received Data Out
Receiver Ground
Receiver Power
Transmitter Power
Transmitter Ground
Transmit Data In
Transmitter Ground
Transmitter on
Undefined
Transmitter Disabled
Transmitter Disabled
Function
5
Plug Seq.
1
3
3
3
3
3
3
3
1
1
1
3
3
1
2
2
1
3
3
1
Note 1
Note 2
Module disables on high or open
Note 3, 2 wire serial ID interface
Note 3, 2 wire serial ID interface
Note 3, Grounded in Module
Function not available
Note 4
Note 5
Note 5
Note 5
Note 6
Note 7
Note 5
3.3 ± 5%, Note 7
3.3 ± 5%, Note 7
Note 5
Note 8
Note 8
Note 5
www.deltaww.com
Notes
Nov., 2006
Rev. 1E