The DS92LX1621 / DS92LX1622 chipset offers a Channel Link III interface with a high-speed
forward channel and a full-duplex back channel for data transmission over a single differential
pair. The Serializer/Deserializer pair is targeted for direct connections between automotive camera
systems and Host Controller/Electronic Control Unit (ECU). The primary transport sends 16 bits of
image data over a single high-speed serial stream together with a low latency bi-directional
control channel transport that supports I2C. Included with the 16-bit
payload is a selectable data integrity option for CRC (Cyclic Redundancy Check) or parity bit to
monitor transmission link errors. Using TI’s embedded clock technology allows transparent
full-duplex communication over a single differential pair, carrying asymmetrical bi-directional
control information without the dependency of video blanking intervals. This single serial stream
simplifies transferring a wide data bus over PCB traces and cable by eliminating the skew problems
between parallel data and clock paths. This significantly saves system cost by narrowing data paths
that in turn reduce PCB layers, cable width, and connector size and pins.
In addition, the Deserializer inputs provide equalization control to compensate for loss
from the media over longer distances. Internal DC balanced encoding/decoding is used to support
The sleep function provides a power-savings mode and a remote wake up interrupt for
signaling of a remote device.
The Serializer is offered in a 32-pin WQFN package, and Deserializer is offered in a
40-pin WQFN package.
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