Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
100 _____________________________________________________________________________________
Applications Information
Power-Supply Decoupling
To achieve best results, it is recommended that the power
supply is decoupled with a 0.01µF or a 0.1µF capacitor.
Use high-quality, ceramic, surface-mount capacitors,
and mount the capacitors as close as possible to the
V
CC
and GND pins to minimize lead inductance.
SDA and SCL Pullup Resistors
SDA is an open-collector output on the device that
requires a pullup resistor to realize high logic levels. A
master using either an open-collector output with a
pullup resistor or a push-pull output driver can be uti-
lized for SCL. Pullup resistor values should be chosen
to ensure that the rise and fall times listed in the I
2
C AC
Electrical Characteristics table are within specification.
Package Information
For the latest package outline information and land patterns,
go to www.maxim-ic.com/packages
. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and WAUXA) or (PW1 and WAUXAU)
WRITE ACCESS PW2 or (PW1 and WAUXA)
MEMORY TYPE Nonvolatile (EE)
00h–FFh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7 BIT 0
Accessible with the slave address A0h.
Auxiliary Memory A0h Register Description
Auxiliary Memory A0h, Register 00h–FFh: EEPROM
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
28 TQFN-EP T2855+6
21-0140 90-0026