airoha

# Airoha Technology Manufacturer Skill ## Company Overview Airoha Technology is a MediaTek subsidiary specializing in Bluetooth audio solutions for TWS (True Wireless Stereo) earbuds, ANC (Active Noise Cancellation) headphones, and premium audio applications. ## MPN Structure Airoha MPNs follow this general structure: ``` [PREFIX][SERIES][MODEL][-PACKAGE] | | | | | | | +-- Optional: Package code (QFN, BGA, CSP) | | +-- Model variant (0-9) | +-- Series number (55, 56, 57, 58) +-- AB15 prefix (Airoha Bluetooth 15xx) ``` ### Example Decoding ``` AB1552 | ||| | ||+-- 2 = Model variant (basic TWS) | |+-- 5 = TWS earbud series | +-- 15 = Bluetooth 1.5 generation +-- AB = Airoha Bluetooth AB1562-QFN | ||| | | ||| +-- QFN = QFN package | ||+-- 2 = Model variant | |+-- 6 = ANC series | +-- 15 = Generation +-- AB = Airoha Bluetooth AB1575 | ||| | ||+-- 5 = Premium variant | |+-- 7 = Premium audio series | +-- 15 = Generation +-- AB = Airoha Bluetooth ``` --- ## Series Overview | Series | Application | Features | Bluetooth | |--------|-------------|----------|-----------| | AB155x | TWS Earbuds | Basic TWS, low power | BT 5.0 | | AB156x | ANC Earbuds | Active Noise Cancellation | BT 5.2 | | AB157x | Premium Audio | Hi-Fi, low latency | BT 5.2 | | AB158x | Ultra-Low Power | Extended battery life | BT 5.3 | --- ## Product Families ### AB155x Series - TWS Earbuds | Part Number | Features | Bluetooth | Application | |-------------|----------|-----------|-------------| | AB1552 | Basic TWS | BT 5.0 | Entry-level earbuds | | AB1558 | Enhanced TWS | BT 5.0 | Mid-range earbuds | ### AB156x Series - ANC Earbuds | Part Number | Features | Bluetooth | ANC Type | |-------------|----------|-----------|----------| | AB1562 | Hybrid ANC | BT 5.2 | Feedforward + Feedback | | AB1563 | Enhanced ANC | BT 5.2 | Advanced hybrid | | AB1568 | Premium ANC | BT 5.2 | Multi-mic ANC | ### AB157x Series - Premium Audio | Part Number | Features | Bluetooth | Audio | |-------------|----------|-----------|-------| | AB1570 | Hi-Fi audio | BT 5.2 | High-resolution | | AB1575 | Premium codec | BT 5.2 | LDAC/aptX HD | ### AB158x Series - Ultra-Low Power | Part Number | Features | Bluetooth | Power | |-------------|----------|-----------|-------| | AB1580 | Ultra-low power | BT 5.3 | Optimized for battery | | AB1585 | Enhanced ULP | BT 5.3 | Extended standby | --- ## Package Codes | Code | Package | Description | |------|---------|-------------| | QFN | QFN | Quad Flat No-lead | | BGA | BGA | Ball Grid Array | | CSP | CSP | Chip Scale Package | | WLCSP | Wafer Level CSP | Ultra-small footprint | | FCBGA | Flip-Chip BGA | High-density BGA | --- ## Bluetooth Version by Series | Series | Default BT Version | LE Audio Support | |--------|-------------------|------------------| | AB155x | Bluetooth 5.0 | No | | AB156x | Bluetooth 5.2 | Yes | | AB157x | Bluetooth 5.2 | Yes | | AB158x | Bluetooth 5.3 | Yes | --- ## Feature Comparison | Feature | AB155x | AB156x | AB157x | AB158x | |---------|--------|--------|--------|--------| | TWS Support | Yes | Yes | Yes | Yes | | ANC | No | Yes | Optional | Optional | | Hi-Res Audio | No | No | Yes | Yes | | Low Latency | Basic | Good | Excellent | Good | | Power Efficiency | Good | Good | Moderate | Excellent | | LE Audio | No | Yes | Yes | Yes | --- ## Handler Implementation Notes ### Pattern Matching ```java // AB155x Series - TWS earbuds "^AB155[0-9].*" // AB156x Series - ANC earbuds "^AB156[0-9].*" // AB157x Series - Premium audio "^AB157[0-9].*" // AB158x Series - Ultra-low power "^AB158[0-9].*" // Generic pattern for all AB15xx "^AB15[5-8][0-9].*" ``` ### Package Code Extraction ```java // Check for hyphenated suffix first String[] parts = upperMpn.split("-"); if (parts.length > 1) { String suffix = parts[parts.length - 1]; // Map: QFN, BGA, CSP, WLCSP, FCBGA } // Check for inline package indicators if (upperMpn.contains("QFN")) return "QFN"; if (upperMpn.contains("BGA")) return "BGA"; ``` ### Series Extraction ```java // Extract first 6 characters (e.g., AB1562) // Validate matches AB15[5-8][0-9] pattern if (result.matches("^AB15[5-8][0-9].*")) { return result.substring(0, 6); } ``` ### Bluetooth Version Inference ```java // Infer BT version from series if (mpn.startsWith("AB158")) return "5.3"; if (mpn.startsWith("AB157")) return "5.2"; if (mpn.startsWith("AB156")) return "5.2"; if (mpn.startsWith("AB155")) return "5.0"; ``` --- ## Replacement Compatibility ### Within-Series Replacements Higher model numbers within a series can typically replace lower ones: - AB1558 can replace AB1552 (more features) - AB1568 can replace AB1562 (better ANC) ### Cross-Series Restrictions Different series target different applications and are NOT interchangeable: - AB156x (ANC) should NOT replace AB155x (basic TWS) - AB157x (premium) should NOT replace AB155x (basic TWS) ### Feature Compatibility Rules 1. If target requires ANC, replacement must support ANC 2. If target requires premium audio, replacement must support it 3. Higher Bluetooth version can replace lower version --- ## Application Guidelines | Use Case | Recommended Series | |----------|-------------------| | Budget TWS earbuds | AB155x | | Mid-range ANC earbuds | AB156x | | Premium headphones | AB157x | | Long-battery earbuds | AB158x | --- ## Related Files - Handler: `manufacturers/AirohaHandler.java` - Component types: `IC` --- ## Learnings & Edge Cases - **MediaTek subsidiary**: Airoha is owned by MediaTek, some parts may have MTK cross-references - **Series determines features**: AB155x vs AB156x vs AB157x have fundamentally different capabilities - **Package suffix optional**: Many MPNs don't include package code - **Bluetooth version tied to series**: Cannot upgrade BT version without changing series - **ANC compatibility critical**: Never substitute non-ANC for ANC-required applications - **Model numbering**: Higher model number within series = more features/better performance <!-- Add new learnings above this line -->