美信解串器MAX96712 Safety Manual

DOCUMENT TITLE:

Safety Manual for MAX96712 (HS86)

DOC ID # 32-100344 NEW REV: A

ECN#: 1050005 EFFECTIVE DATE: 2/12/19

MOST RECENT CHANGES

2. PRODUCT DESCRIPTION .......................................................................................................... 3

2.1. Product Features ...................................................................................................................................................................... 3

2.2. Software / Firmware ................................................................................................................................................................ 4

3. ITEM DEFINITION ....................................................................................................................... 4

3.2. System Definition ..................................................................................................................................................................... 6

4. SYSTEM FUNCTIONS (ITEM LEVEL) ........................................................................................ 6

5. HAZARD ANALYSIS (ITEM LEVEL) .......................................................................................... 6

5.1.1. Definition of Safety Goals ................................................................................................................................................. 8

5.2.1. Definition of Safety Goals ................................................................................................................................................. 9

5.3.1. Definition of Safety Goals ............................................................................................................................................... 10

9.2. Verification results of Safety Measures/HW Integration Testing ...................................................................................... 18

9.3. FMEDA Summary ................................................................................................................................................................. 22

APPENDIX .......................................................................................................................................... 23

TERMS AND DEFINITIONS ............................................................................................................... 24

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The MAX96712 deserializer converts four GMSL2 or GMSL1 serial inputs to MIPI CSI-2 D-PHY or C-PHY while

sending and receiving control channel data over each serial link, enabling simultaneous transmission of

forward video and bidirectional control data between the MAX96712 and as many as four remotely located

sensors over coax cables in excess of 15m in length. Each GMSL2 serial link operates at a fixed rate of 3Gbps or

6Gbps in the forward direction and 187.5Mbps in the reverse direction. In GMSL1 mode, the MAX96712 can

be paired with first-generation 3.12Gbps or 1.5Gbps GMSL1 serializers or operate up to 4.5Gbps with GMSL2

serializers in GMSL1 mode.

Both aggregation and replication of video data are supported, enabling streams from multiple remotely

located sensors to be combined and routed to one or more of the available CSI-2 outputs. Data can be routed

remote serializers or sensors while an additional two SPI ports are provided as tunneling interfaces to remote

sensors (GMSL2).

Operation is specified over the automotive temperature range of -40°C to +105°C, and the device is AEC-Q100

qualified.

2.1. Product Features

The MAX96712 provides the following features.

MIPI CSI-2 v1.3 Output Configurable as 2x4-Lane, 1x4-Lane + 2x2-Lane, or 4x2-lane.

• Selectable D-PHY v1.2 at 80Mbps-to-2.5Gbps/lane or C-PHY v1.0 at 182Mbps-to-5.7Gbps/lane

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• Independent PHY/Video Configuration of all Ports

Quad GMSL Inputs with Independently Configurable GMSL1/2 Operation, Link Speed, and Video Format

• Backward compatible with GMSL1 Serializers

• Operates up to 4.5Gbps with GMSL2 Serializers Operating in GMSL1 Mode

• GMSL2 Link Speed of 3Gbps or 6Gbps (forward) and 187.5Mbps (reverse)

• Supports Both Synchronized and Non-Synchronized Cameras

• Enables Precise Synchronization of Multiple Serializers for Large Camera Systems

• PRBS Generator/Checker for Link BER testing

• Eye-Opening Monitor for Continuous Diagnostics

• Adaptive Equalization Enables >15m Coax Cable with Multiple In-Line Connectors

• ECC and CRC Protection of CSI-2 Data Streams

Concurrent Control Channel for Device Configuration and Communicating with Remote Peripherals

• I2C/UART, SPI, Sampled or Register Driven GPIO

• 8 Hardware-Selectable Device Addresses

Programmable Spread Spectrum for EMI Reduction

25MHz Frequency Reference Output

AEC-Q100 Qualified

±4kV/±8kV Contact/Air Discharge ESD Protection

-40°C to +105°C Operating Temperature

The product MAX96712 (HS86) is defined as an element and consists of components which are identical to the

individual functional blocks of the design. One or more elements grouped together build an Item. On the Item

level the Hazard Analysis is performed and the Functional Safety Concept is defined.

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3.1. Item Architecture

The following diagram shows the item architecture describing the elements of the items and their

components Furthermore, the interfaces between the elements are described.

The item definition includes a description of the boundary with respect to the responsibility related to