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Table 1.10

Human machine interfaces (2 of 2)

Feature

Functional description

Capture Engine Unit (CEU)

The Capture Engine Unit (CEU) is a capture module that fetches image data externally input and

transfers it to the memory.

MIPI DSI interface

The MIPI DSI interface module has a Transmitter function for MIPI Alliance Specification for

Display Serial Interface 2 (DSI-2). This module supports MIPI Alliance Specification for Display

Serial Interface 2 (DSI-2) Specification. And it works with MIPI Alliance Specification for D-PHY

Specification. This module provides a solution for transmitting MIPI DSI-2 compliant digital video

and packets.

MIPI CSI interface

MIPI CSI-2 can receive signals conforming to the MIPI CSI-2 standard, extracts video data from

various packets, and sends them to Video Input Module in the subsequent stage.

Video Input Module (VIN)

Video Input Module (VIN) can receive video data received from MIPI CSI-2, and perform

appropriate image processing for each. The image-processed data is temporarily stored in the

FIFO and transferred to an external memory.

Table 1.11

Data processing

Feature

Functional description

Cyclic Redundancy Check (CRC)

calculator

The Cyclic Redundancy Check (CRC) calculator generates CRC codes to detect errors in

the data. The bit order of CRC calculation results can be switched for LSB-first or MSB-first

communication. Additionally, various CRC-generation polynomials are available. The snoop

function allows monitoring reads from and writes to specific addresses. This function is useful

in applications that require CRC code to be generated automatically in certain events, such as

monitoring writes to the serial transmit buffer and reads from the serial receive buffer.

Data Operation Circuit (DOC)

The Data Operation Circuit (DOC) compares, adds, and subtracts 32-bits data. When a selected

condition applies, 32-bit data is compared and an interrupt can be generated.

Table 1.12

Security

Feature

Functional description

Security function

● ARMv8-M TrustZone security

● Privileged control

● Device lifecycle management

● Authentication Level (AL)

● Key injection

● Secure pin multiplexing

● HUK zeroization

● VBATT backup registers zeroization

● Secure boot

● Secure factory programming

Renesas Secure IP (RSIP-E50D)

● Symmetric cryptography: AES and ChaCha20-Poly1305

● Asymmetric cryptography: RSA and ECC

● Message digest computation: HASH, HMAC

● 128-bit true random number generation circuit

● 256-bit Hardware Unique Key (HUK)

● 128-bit unique ID

● OEM boot loader version

● Key data for the decryption on-the-fly (DOTF)

● SPA/DPA Protections

Decryption on-the-fly (DOTF)

Decryption on-the-fly (DOTF) decrypts the encrypted content stored in the external memory in

real-time.

RA8D2 Datasheet

1. Overview

R01DS0493EJ0130 Rev.1.30

Feb 27, 2026

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