Can one PCB carry both RV1126 and RV1109?

Yes. The two parts are pin-compatible, so a single board design can serve a flagship and a volume SKU with different population options.

Does the RV family support PCIe or USB 3?

No. Interfaces are Gigabit Ethernet, USB 2.0 and SDIO. Products that need high-speed expansion should start from the RK family instead.

RV1126 and RV1109 in a camera product: the details that decide the design

RV1126 and RV1109 are the two parts most camera products in this price class end up on. They share a package footprint, which means one PCB can carry both: the higher tier for the flagship SKU, the lower for the volume SKU. That single fact shapes the whole development plan.

Pin compatibility as a product strategy

Because RV1109 (dual A7, 1.2 TOPS, 5 MP pipeline) drops into the same footprint as RV1126 (quad A7, 2 TOPS, 14 MP pipeline, 4K encode), a brand can launch two price points from one board design and one certification set. We plan the layout at the higher tier’s power and thermal requirements, then populate the lower tier for cost — the reverse order does not work.

The ISP is the product

Both parts carry a multi-stage ISP with three-frame HDR and noise reduction. For a camera product that is the difference between a usable night image and a noisy one, and it is why teams choose this family over a generic SoC with a software pipeline. It also means lens and sensor choice matter: a good ISP behind a poor lens still produces a poor image, and the tuning effort is per-module, not per-chip.

Encode budget, not resolution marketing

RV1126 encodes 4K H.264/H.265, RV1109 5 MP. In practice the constraint is bitrate and storage, not the maximum number: a doorbell sending 2 MP at a sensible bitrate will look better on a phone than a 4K stream compressed to fit someone’s data plan. Decide the target bitrate first, then the resolution.

Standby and fast boot

Battery products live or die on standby current, and camera products on time-to-first-frame. Both parts support fast boot and a dual-system arrangement where a small always-on domain wakes the main system. That architecture has to be designed into the power tree from the start; retrofitting a low-power wake path onto a board designed for continuous operation usually means a respin.

Interfaces that matter on a camera board

Gigabit Ethernet with TSO offload, USB 2.0 host and OTG, two SDIO 3.0 interfaces for Wi-Fi and storage. Note what is absent: no USB 3, no PCIe, no SATA. If the product roadmap includes an NVMe cache or a second high-speed peripheral, the RV family is the wrong starting point.

What we confirm before layout

Sensor and lens pair, IR-cut and illumination arrangement, target bitrate, standby target in microamps, wake source, and whether the SKU plan needs both tiers. Those six answers fix the schematic; everything else is execution.