Overview

The RG3MxxB12A1 is a family of I2C/I3C Multiple Port Hub devices featuring two I2C/I3C Master Side Ports and up to eight I2C/IC Slave Side Ports. An RG3MxxB12A1 device provides connectivity to up to two masters, and up to eight slaves. By cascading and duplicating the RG3MxxB12A1, the user builds a RG3MxxB12A1 Hub Network to provide connectivity to a number of devices, with extended reach distance, and running with different level of I2C, I3C, and SMBus protocols.

In an RG3MxxB12A1 device, each of Master Side Port is associated with an on-chip I2C/I3C slave interface. Each I2C/I3C interface accesses on-chip registers. Master-Master communication is achieved with shared registers and intra-port IBI channels.

RG3M47B12 is a 2:4 Intelligent Switch with downstream ports default enabled.

RG3MxxB12 - Block Diagram
RG3MxxB12 - Block Diagram
  • Two Master Side (upstream/controller) ports
  • Four Slave Side (downstream/target) ports
  • On-Chip I2C/I3C Slave (target) Interface
  • Master Side port multiplexer
  • Master switching via in-band I2C/I3C commands or pin selection
  • Master-Master communication and messaging support
  • Hot Join support
  • Support both I2C and I3C Basic 1.0 protocol
  • All ports support 1.0 to 1.8V I2C/I3C compatible operation
  • Downstream ports default enabled
  • Temperature range: -40°C to 85°C
  • Packaged in a 4 × 4 mm 28-pin VFQFPN

Documentation

= Featured Documentation
Type Title Date
Datasheet - Short-form
RG3MxxB12A1 Short-Form Datasheet
PDF 140 KB
Overview
Memory Multiplexer Family Overview
PDF 807 KB
2 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Description
    Pkg. Type
    Lead Count (#)
    Carrier Type
    MOQ
    Moisture Sensitivity Level (MSL)
    Buy / Sample
    Part Number
    RG3M47B12A1GNL#KB0
    fast_forwardPreview
    memory
    view_in_ar
    		I3C 2:4 Intelligent Switch User-configured VFQFPN 28 Reel 2500 1
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product