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LCP-1250RJ3SR-S
DELTA ELECTRONICS, INC.
2
Oct. 17. 2007 Rev. 1.02
www.deltaww.com
Product Selection
Part Number
LCP-1250RJ3SR
*note1
LCP-1250RJ3SR-L
*note2
LCP-1250RJ3SR-S
*note3
Link Indictor On RX_LOS
Pin
N/A Available N/A
Auto-ne
g
otiation on MAC
side Enabled by default
1000Base-X Yes SGMII
MAC side Interface
1.25Gbps SerDes 1.25Gbps SerDes SGMII without clock
Auto-ne
g
otiation on
copper side Enabled b
y
default
1000Base-T 1000Base-T 1000Base-T
Speed Mode (default)
1000Mbps only 1000Mbps only 10/100/1000Mbps
Notes:
1. This part supports the 1000 Base-T with SerDes interface by default. It can operate in 10/100/1000
Base-T with SGMII interface by reconfiguration of the PHY within the SFP.
2. This part uses the SFP’s Rx-Los pin for link indication and 1000 Base-T auto-negotiation should be
disabling on the host system. It can operate in 10/100/1000 Base-T with SGMII interface by
reconfiguration of the PHY within the SFP.
3. This part supports the 10/100/1000 Base-T with SGMII interface by default. It can operate in 1000
Base-T with SerDes interface by reconfiguration of the PHY within the SFP.
Serial Interface Configuration (PHY Two-Wire Address 0xAC)
Register Bits Field Mode Description
27 3:0
HWCFG_
MODE
R/W Changes to these bits are disruptive to the normal
operation; hence, any changes to these registers must be
followed by software reset to take effect.
Upon hardware reset Register 27.3:0 defaults to the value
in HWCFG_MODE[3:0].
0100 = SGMII without Clock with SGMII Auto-Neg to
copper
1000 = 1000BASE-X without Clock with 1000BASE-X
Auto-Neg to copper (GBIC)
1100 = 1000BASE-X without Clock without 1000BASEX
Auto-Neg to copper
Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit Note
Storage Temperature Ts
−
40
85 ºC
Supply Voltage V
CC
0 5 V
Recommended Operating Conditions
Parameter Symbol Min. Typ. Max. Unit Note
Ambient Operating Temperature TA 0 70 ºC
Supply Voltage V
CC
3.135 3.465 V