Applications information, Power-supply decoupling, Sda and scl pullup resistors – Rainbow Electronics DS1876 User Manual
Page 69: Package information, Ds1876 sfp controller with dual ldd interface
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69
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DS1876
SFP Controller with Dual LDD Interface
Auxiliary Memory A0h, Register 80h–FFh: EEPROM
Applications Information
Power-Supply Decoupling
To achieve best results, it is recommended that the power
supply is decoupled with a 0.01FF or a 0.1FF 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 DS1876 that
requires a pullup resistor to realize high logic levels. A
master using either an open-collector output with a pul-
lup resistor or a push-pull output driver can be used 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
. 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
All
WRITE ACCESS
PW2 or (PW1 and WAUXB) or (WAUXBU)
MEMORY TYPE
Nonvolatile (EE)
80h–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.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
28 TQFN-EP
T2855+6