 Features
Support both l2C and l3C basic 1.0 protocol
Support 1.0 V to 1.8 V l2C/l3C compatible
operation
Support l2C open-drain only operation up
3.3V
Master-master communication and messaging
support
Master switching via in-band l2C/l3C commands
or pin selection
Up to eight slave side (downstream/target) ports
Two master side (upstream/controller) ports
SMBus SCL stretching support in open-drain
operation only
SMBus transaction agent for SMBus
compatibility
Master-slave level shifting support
Support In-Band Interrupt (lBl) and optimization
Mixed l2C/l3C bus support
Support master to slave analog switch mode
On-chip voltage regulators or direct platform
connection of I/O supplies
 Applications
l3C/l2C/SMBus compatibility
l3C topology management
l3C signal integrity management
DIMM l3C fan-out
PCIE l3C fan-out
 Description
The DIO7xx12 is a series of l2C/l3C multi-port hub
devices with two l2C/l3C master ports and up to eight
l2C/l3C slave ports. By cascading DIO7xx12, users
build a network of DIO7xx12 hubs to provide
connectivity to multiple devices with extended reach
distances and operate using different levels of l2C,
l3C, and SMBus protocols.
The DIO7xx12 supports l2C, l3C basic 1.0, and
JEDEC l3C protocols. Comes with a globally unique
provisioned ID to support ENTDAA CCC and
supports slave port hot join and host port hot join.
In a DIO7xx12 device, each of master side ports is
associated with an on-chip l2C/l3C slave interface.
Each l2C/l3C interface accesses on-chip registers.
Master-master communication is achieved with
shared registers and intra-port lBl channels.
The DIO7xx12 supports five IBI interrupt sources:
PEC error, parity error, slave port event, other master
message request, and bus agent event. Other master
message request and bus agent event support
mapping to any master port.