Features
- AHL Video Decoder
- Software-selectable analog input control allows for combinations of single-ended and differential
- Built-in programmable analog anti-alias filter
- 10-bit ADCs and analog clamping circuit with up to 150MHz sampling frequency
- Fully programmable static gain or automatic gain control
- Programmable white peak control for the Y channel
- 4-H adaptive comb filter Y/C separation
- Digital sub-carrier PLL for accurate color decoding
- Digital horizontal PLL for synchronization processing and pixel sampling
- Automatic color control and color killer
- Programmable output cropping
- Video Processing
- Programmable hue, brightness, saturation, contrast, and sharpness.
- Image enhancement with peaking and CTI
- Black/White stretch
- MIPI Output
- MIPI 1.1 compliant unidirectional output format
- YUV 422 output format
- Up to 1.0Gbps
- 1–2 lane
- Pseudo BT.656 Output
- 8-bit parallel output with embedded sync
- Separate HREF and VREF
- Simultaneous output with MIPI
- Miscellaneous
- Power save and Power-down mode
- Short-to-battery detection test
- Short-to-ground detection test
- Two-wire host serial bus interface
- Single 27MHz crystal for all operations
- 1.8V – 3.3V I/O operation
- 1.8V/3.3V power supply
- 48 Ld QFN
- AEC-Q100 qualified
Description
The RAA279972 is a high-definition analog video decoder designed for automotive applications. It supports single-ended, differential, and pseudo-differential analog composite high-definition AHL video inputs. The high-quality 10-bit video ADC converts the signal to digital, and a proprietary AHL adaptive comb filter separates Luma and Chroma data to output a YUV422 digital video signal over a two-lane MIPI-CSI2 interface or a DVP/BT.656 parallel interface. The RAA279972 has integrated short-to-battery and short-to-ground detection and image enhancement features, making it an ideal solution for demanding high-resolution automotive camera applications. When paired with the RAA279971 encoder, an analog video link is established over a single wire pair.
Parameters
| Attributes | Value |
|---|---|
| Channels per device (#) | 1 |
| Inputs (#) | 2 |
| Output Format | 720p/60, 1080p/30 (max) |
| Analog Output | No |
| Comb Filter | 2D |
| Interface | MIPI-CSI2, BT.656, DVP |
| Video DAC | No |
| Qualification Level | Automotive |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| SCQFN | 7.0 x 0.0 x 0.90 | 48 | 0.5 |
Application Block Diagrams
 | Low-End Camera Monitoring System A cost-effective, low-end camera monitoring system optimizes brightness with an MCU optical sensor and video processor. |
 | Cost-Effective Digital Cluster with 4-channel AHL and Surround View Digital clusters boost safety by centralizing info and reducing costs with AHL and efficient PMICs. |
 | Low-Cost TFT Instrument Cluster with Telematics Instrument cluster design with telematics, Bluetooth LE, Wi-Fi mirroring, and HD camera support. |
 | Automotive Camera System with AHL Control Channel Automotive AHL camera system with single-cable video transmission and control, plus I2C blower control. |
 | Video Output Expansion for Surround View & AR HUD Integrated video output and AI for surround view and AR HUD with reduced cost and complexity. |
 | Parking Assistance System with AHL Camera Automotive parking camera system with HD analog link cuts cabling cost and maintains zero latency. |
Additional Applications
- Automotive backup camera displays
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Knowledge Base
-
AHL 能否支持通过相同电缆供电（如 SerDes）？
不，模拟信号噪音过多，但我们在考虑如何在新世代的 AHL 中实现相同电缆的供电。
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能否使用 AHL 控制通道从 ECU 初始化照相机？
可以，AHL 的控制通道在芯片启动后立即开始工作。控制通道独立于视频运行，因此不需要主动为控制通道工作而传输
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What type of cables and connectors must be used with AHL transmission?
AHL can be used with UTP, low-cost STP, and coaxial cables. The same traditional connectors that are used with NTSC/PAL analog video can also be used with AHL.
Jul 13, 2021
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