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Multi-Channel I2C Bus Multiplexer Cabinet |
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The I2C Bus Multiplexer Cabinet is a multi-channel I2C Bus interface cabinet capable of delivering up to 32 independant and multiplexed I2C Bus channels. The cabinet consists of one to eight (CH1...CH8) iPort/AFM RS-232 to I2C Bus host adapters (#MIIC-203), one to eight (MX1...MX8) I2C Bus 4 channel multiplexer boards (#IP-201), power supply, power switch, power lamp, I2C Bus indicator lamps, and interconnecting cabling, all assembled into a single 19-inch 3U high rack mount cabinet. |
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The standard multiplexer cabinet provides clock (SCL) and data (SDA)
pull-ups for a 5 volt I2C Bus. An optional 3 volt modification is available
upon request.
Multiplexer Board Addressing
In general, each multiplexer board within the cabinet is controlled
with messages sent to the board's common port via an I2C Bus link to its
attached iPort/AI host adapter. Each multiplexer board has a jumper selectable
I2C Bus slave address. The default multiplexer slave address for single
host adapter/multiplexer board applications is 4C. The default address
for multiple multiplexer boards connected to single host adapter is 40
to 4E.
Multiplexer Channel Selection
Each multiplexer board has one common I2C port, and 4 selectable ports.
The multiplexer board accepts single data byte I2C Bus messages sent to
its slave address. The single data byte is used by the multiplexer board
to connect the its common I2C port to one or none of its selectable channels.
The Multi-Channel I2C Bus Multiplexer Cabinet is available in many different configurations:
Part # IP-201-YxZ-X
Y = Number of RS-232 Channels (1...8)
Z = Number of I2C Buses (4...32)
X = 5v or 3.3v option (5 or 3)
Standard 5v or 3.3v options.
Up to 32 separate
I2C Buses.