0.6 (2019–07–25)
Amlogic Proprietary and Confidential
Copyright © Amlogic. All rights reserved.
2
2 General Description
S905D3 is an advanced application processor designed for hybrid OTT/IP Set Top Box (STB) and
high-end media box applications. It integrates a powerful CPU/GPU subsystem, a powerful NPU(Neu-
ral Network Processing Unit)
Optional
,a secured 4K video CODEC engine and a best-in-class HDR image
processing pipeline with all major peripherals to form the ultimate low power multimedia AP.
The main system CPU is a quad-core ARM Cortex-A55 CPU with unified L3 cache to improve system
performance. In addition, the Cortex-A55 CPU includes the NEON SIMD co-processor to improve soft-
ware media processing capability.
The graphic subsystem consists of two graphic engines and a flexible video/graphic output pipeline.
The ARM G31 MP2 GPU handles all OpenGL ES 3.2 Vulkan 1.0 and OpenCL 2.0 graphic programs,
while the 2.5D graphics processor handles additional scaling, alpha, rotation and color space conver-
sion operations. Together, the CPU and GPU handle all operating system, networking, user-interface
and gaming related tasks. The video output pipeline includes Dolby Vision
optional
, HDR10 +, HDR10,
HLG and PRIME HDR processing, BT.709/BT.2020/BT.2100 processing, motion adaptive edge en-
hancing de-interlacing, flexible programmable scalar, and many picture enhancement filters before
passing the enhanced image to the video output ports.
Amlogic Video Engine (AVE-10) off-loads the Cortex-A55 CPUs from all video CODEC processing. It
includes dedicated hardware video decoder and encoder. AVE-10 is capable of decoding 4Kx2K reso-
lution video at 60fps with complete Trusted Video Path (TVP) for secure applications and supports full
formats including MVC, MPEG-1/2/4, VC-1/WMV, AVS, AVS +, AVS2 RealVideo, MJPEG streams,
H.264, H265-10, VP9 and also JPEG pictures with no size limitation. The independent encoder is able
to encode in JPEG or H.265/H.264 up to 1080p at 60fps.
S905D3 integrates all standard audio/video input/output interfaces including a HDMI2.1 transmitter
with 3D, Dynamic HDR(w/EMP), CEC and HDCP2.2, ALLM(Auto Low Latency Mode) support,stereo
audio DAC, a CVBS output,4-lane MIPI DSI interface,2–lane MIPI CSI interface, multiple TDM, PCM,
I2S and SPDIF digital audio input/output interfaces, and 8 channel far-field PDM digital microphone
(DMIC) inputs. It also has build-in Voice Activity Detection(VAD)module for ultra-low power operations
during system standby.
S905D3 also integrates a set of functional blocks for digital TV broadcasting streams. The built-in two
demux can process the TV streams from the serial and paralleltransport stream input interface, which
can connect to external tuner/demodulator.
The processor has rich advanced network and peripheral interfaces, including a 10/100/1000M Ether-
net MAC with RGMII, 10/100M Ethernet PHY,a set of multi-PHY for USB2, USB3 and PCIe,and multi-
ple SDIO/SD card controllers, UART, I2C, high-speed SPI and PWMs.
Standard development environment utilizing GNU/GCC Android tool chain is supported. Please con-
tact your AMLOGIC sales representative for more information.
S905D3 Quick Reference Manual
Preliminary Version
Confidential for Wesion!