(1)处理器概述
(2)处理器模块架构
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(1)
Processor Core
z ARM Cortex A17 quad-core@maximum 1.4 GHz
− 32 KB L1 I-cache, 32 KB L1 D-cache
− 1 MB L2 cache
− Main control processor for running peripheral drivers and applications
z ARM Cortex A7 single-core@maximum 900 MHz
− 32 KB L1 I-cache, 32 KB L1 D-cache
− 128 KB L2 cache
− Video-related module control
z H.265 Main Profile L5.1
z H.264 Baseline/Main/High profile L5.0
z MPEG4 SP L0–3/ASP L0–5
z MJPEG/JPEG baseline
Video Encoding Standards
z H.264 Baseline/Main/High profile L5.1
z MJPEG/JPEG baseline
Video Encoding/Decoding
z H.265/H.264&JPEG encoding and decoding of multiple streams:
− 4-channel 4K x 2K (3840 x 2160)@30 fps H.265/H.264 decoding+2x1080p@30 fps H.264 encoding+4-channel 4K x 2K@2 fps JPEG encoding
− 16x1080p@30 fps H.265/H.264 decoding+2x1080p@30 fps H.264 encoding+16x1080p@2 fps JPEG encoding
− 9x1080p@30 fps H.265/H.264 decoding+4K x 2K@30 fps H.264 encoding+9x1080p@2 fps JPEG encoding
− 32x720p@30 fps H.265/H.264 decoding+4x720p@30fps H.264 encoding+32x720p@2 fps JPEG encoding
− 64xD1@30 fps H.265/H.264 decoding+8xD1@30 fps H.264 encoding+64xD1@2 fps JPEG encoding
− 9x720p@30 fps JPEG decoding
GPU
z Integrated Mali-T720 GPU
z OpenGL ES3.1/2.0/1.1
z Up to 63 MTris/s triangle filling rate
z Double-precision FP64 and anti-aliasing
(2)