automotive-zonal

Automotive Zonal

Automotive Ethernet

Automotive Ethernet - TSN & AVB

Category: automotive-zonal Version: 1.0.0 Maturity: production Complexity: advanced

Overview

Expert knowledge in automotive Ethernet technologies including Time-Sensitive Networking (TSN), Audio Video Bridging (AVB), physical layer standards (100BASE-T1, 1000BASE-T1), switch configuration, VLAN management, and Quality of Service (QoS) for deterministic vehicle networks.

Core Competencies

1. Physical Layer Standards

100BASE-T1 (IEEE 802.3bw)

// 100BASE-T1 PHY Configuration
typedef struct {
    uint8_t standard;           // IEEE 802.3bw
    uint16_t data_rate_mbps;    // 100 Mbps full-duplex
    uint8_t wire_pairs;         // 1 twisted pair
    uint16_t max_length_m;      // 15 meters (typ), 40m (max)
    float voltage_p2p;          // 2.4V peak-to-peak
    uint8_t encoding;           // PAM3 (3-level)
    bool pma_master;            // Master/Slave negotiation
} BASE100_T1_Config;

// Example configuration for zone controller
BASE100_T1_Config zcu_phy = {
    .standard = IEEE_802_3bw,
    .data_rate_mbps = 100,
    .wire_pairs = 1,
    .max_length_m = 15,
    .voltage_p2p = 2.4,
    .encoding = PAM3,
    .pma_master = true  // Zone controller is master
};

1000BASE-T1 (IEEE 802.3bp)

// 1000BASE-T1 PHY Configuration (for cameras, ADAS)
typedef struct {
    uint8_t standard;           // IEEE 802.3bp
    uint16_t data_rate_mbps;    // 1000 Mbps full-duplex
    uint8_t wire_pairs;         // 1 unshielded twisted pair
    uint16_t max_length_m;      // 15m (standard), 40m (extended)
    uint8_t encoding;           // PAM3
    bool automotive_grade;      // AEC-Q100 qualified
    float temp_range[2];        // -40°C to +125°C
} BASE1000_T1_Config;

// Camera link configuration
BASE1000_T1_Config camera_phy = {
    .standard = IEEE_802_3bp,
    .data_rate_mbps = 1000,
    .wire_pairs = 1,
    .max_length_m = 15,
    .encoding = PAM3,
    .automotive_grade = true,
    .temp_range = {-40.0, 125.0}
};