vsc055xkm-01 Maxim Integrated Products, Inc., vsc055xkm-01 Datasheet - Page 2

• Manufacturer Part Number: vsc055xkm-01
• Description: Enhanced I?c Backplane Controller
• Manufacturer: Maxim Integrated Products, Inc.

Additional control features include: selectable flash rates for direct LED drive, input edge detection for interrupt
generation, input to output bypass capability, fan speed monitoring control, and pulse-width modulated output
control. Support for sub-addressing additional two-wire serial slave devices using a set of seven control registers is
included. This capability allows up to 16 independent Master mode two-wire serial slave ports to be created using 32
of the I/O pins.
The addressing capability of the VSC055-01 includes three pins, which are used for device addressing, as well as one
pin that can be used to select two device type identifiers. Sixteen VSC055-01 devices can be used in a single two-wire
serial interface system.
Block Diagram
Revision 4.1
January 2008
SYNCEN
CKSEL0
CKSEL1
CKSEL2
CKOUT
SY NC#
A2−A0
OSCO
ASEL
OSCI
SDA
INT#
SCL
and Div iders
P0.0 − P0.7
Power-On
Generator
Two-Wire
Interf ace
Slav e
Reset
Clock
Pulse-Width
P1.0 − P1.7
Modulation
Control
P2.0 − P2.7
Fan Speed
Sensors
Interrupt Priority and Control
P3.0 − P3.7
I/O Control
and LED
Flashing
2 of 133
I/O Ports
Port By pass
P4.0 − P4.7
Control
P5.0 − P5.7
P6.0 − P6.7
P7.0 − P7.7
VSC055-01
Data Sheet