Cantara/realtek
.claude/skills/manufacturers/realtek/SKILL.md
Realtek Semiconductor MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Realtek audio codecs, Ethernet controllers, WiFi ICs, or RealtekHandler.
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SKILL.md
- name:
- realtek
- description:
- Realtek Semiconductor MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Realtek audio codecs, Ethernet controllers, WiFi ICs, or RealtekHandler.
Realtek Semiconductor Manufacturer Skill
Company Overview
Realtek Semiconductor Corporation is a fabless IC design house founded in 1987 in Taiwan. They are a leading supplier of:
- Audio Codecs: PC audio (ALC series) - dominant in motherboard audio
- Ethernet Controllers: PCIe/USB Ethernet (RTL81xx series) - #1 market share
- Gigabit PHY: Physical layer transceivers (RTL821x series)
- WiFi Controllers: 802.11n/ac/ax wireless (RTL88xx series)
- Display Controllers: LCD/monitor controllers (RTD2xxx series)
- Card Readers: SD/MMC controllers
MPN Structure
Realtek MPNs follow this general structure:
[PREFIX][SERIES][VARIANT]-[PACKAGE]
| | | |
| | | +-- Package code (GR, VB, CG, etc.)
| | +-- Variant letter (E, F, G, H for generations)
| +-- Series number (269, 1220, 8111, etc.)
+-- Family prefix (ALC, RTL, RTD)
Example Decoding
ALC892-GR
| | ||
| | |+-- GR = QFP package
| | +-- (no variant)
| +-- 892 = High-end audio codec
+-- ALC = Audio codec family
RTL8111H-CG
| | |||
| | ||+-- CG = QFN package
| | |+-- H = Generation H (latest)
| | +-- 8111 = Gigabit Ethernet
+-- RTL = Realtek network IC
RTL8211E-VL-CG
| | | | ||
| | | | |+-- CG = QFN package
| | | | +-- (second suffix)
| | | +-- VL = QFN-VL variant
| | +-- E = Generation E
+-- RTL = Gigabit PHY
Product Families
Audio Codecs (ALC Series)
| Series | Category | Examples | Features | |--------|----------|----------|----------| | ALC2xx | Entry-level | ALC269, ALC272 | Basic PC audio, notebooks | | ALC6xx | Mid-range | ALC662, ALC663 | Desktop motherboards | | ALC8xx | High-end | ALC892, ALC898 | Enthusiast motherboards | | ALC1xxx | HD Audio | ALC1150, ALC1200, ALC1220 | High-end gaming | | ALC5xxx | Mobile | ALC5640, ALC5682 | Smartphones, tablets |
Audio Codec Generations:
- Standard: ALC2xx, ALC6xx, ALC8xx - PC audio applications
- HD (High Definition): ALC1xxx - Premium PC audio with higher SNR
- Mobile: ALC5xxx - Low-power codecs for portable devices
Ethernet Controllers (RTL81xx Series)
| Series | Category | Interface | Speed | |--------|----------|-----------|-------| | RTL810x | Fast Ethernet | PCIe | 10/100 Mbps | | RTL811x | Gigabit PCIe | PCIe | 10/100/1000 Mbps | | RTL816x | Gigabit PCIe | PCIe | 10/100/1000 Mbps | | RTL821x | Gigabit PHY | RGMII/SGMII | 10/100/1000 Mbps |
Notable Parts:
- RTL8101E: Budget Fast Ethernet, PCIe
- RTL8111H: Most popular Gigabit Ethernet controller
- RTL8168E: Server/industrial Gigabit Ethernet
- RTL8211E/F: Integrated Gigabit PHY for SoCs
WiFi Controllers (RTL88xx Series)
| Series | Standard | Band | Notes | |--------|----------|------|-------| | RTL8188 | 802.11n | 2.4GHz | Single-band, USB/PCIe | | RTL8192 | 802.11n | 2.4GHz | Dual-stream, USB/PCIe | | RTL8812 | 802.11ac | Dual-band | Wave 1, USB/PCIe | | RTL8814 | 802.11ac | Dual-band | Wave 2, 4x4 MIMO |
IMPORTANT: RTL8188 and RTL8192 start with "RTL81" but are WiFi controllers, NOT Ethernet! The handler groups them with RTL88xx for series extraction.
Display Controllers (RTD2xxx Series)
| Series | Category | Application | |--------|----------|-------------| | RTD2xxx | LCD Controllers | Monitors, TVs |
Package Codes
QFP (Quad Flat Package)
| Code | Package | Notes | |------|---------|-------| | GR | QFP | Standard quad flat package | | G | QFP | QFP variant |
QFN (Quad Flat No-lead)
| Code | Package | Notes | |------|---------|-------| | VB | QFN | Standard QFN | | CG | QFN | Common for Ethernet ICs | | VL | QFN-VL | QFN VL variant | | VS | QFN-VS | QFN VS variant | | VD | QFN-VD | QFN VD variant | | VA | QFN-VA | QFN VA variant | | VC | QFN-VC | QFN VC variant | | VF | QFN-VF | QFN VF variant | | LF | QFN-LF | Lead-free QFN |
BGA (Ball Grid Array)
| Code | Package | Notes | |------|---------|-------| | BR | BGA | Ball grid array | | BG | BGA | BGA variant |
Qualifiers
| Code | Meaning | Notes | |------|---------|-------| | TR | Tape and Reel | Packaging for SMT | | LF | Lead-free | RoHS compliant |
Series Extraction Rules
The handler extracts series using these rules:
| MPN Prefix | Series | Product Category | |------------|--------|------------------| | ALC1xxx | ALC1 | HD Audio Codecs | | ALC5xxx | ALC5 | Mobile Audio Codecs | | ALC2xx | ALC2 | Entry-level Audio | | ALC6xx | ALC6 | Mid-range Audio | | ALC8xx | ALC8 | High-end Audio | | RTL8188/8192 | RTL88 | WiFi Controllers (special case!) | | RTL810x/811x/816x | RTL81 | Ethernet Controllers | | RTL821x | RTL82 | Gigabit PHY | | RTL88xx | RTL88 | WiFi Controllers | | RTD2xxx | RTD2 | Display Controllers |
CRITICAL: RTL8188 and RTL8192 return "RTL88" (WiFi series), not "RTL81" (Ethernet), even though they start with "RTL81".
Official Replacement Rules
The handler identifies compatible replacements within series:
Audio Codec Compatibility
| Original | Replacement | Notes | |----------|-------------|-------| | ALC892 | ALC898 | Pin-compatible upgrade | | ALC898 | ALC892 | Pin-compatible downgrade | | ALC1150 | ALC1200 | Similar pinouts | | ALC1200 | ALC1220 | Often compatible |
Ethernet Controller Compatibility
| Original | Replacement | Notes | |----------|-------------|-------| | RTL8111E | RTL8111F/G/H | Backward compatible generations | | RTL8168E | RTL8168F/G/H | Backward compatible generations | | RTL8211E | RTL8211F | Backward compatible |
WiFi Controller Compatibility
| Original | Replacement | Notes | |----------|-------------|-------| | RTL8188EU | RTL8188EUS | Same IC, different suffix | | RTL8192EU | RTL8192EUS | Same IC, different suffix |
Handler Helper Methods
The RealtekHandler provides these utility methods for product classification:
isAudioCodec(String mpn)
Returns true if the MPN is an ALC audio codec.
isAudioCodec("ALC892-GR") // true
isAudioCodec("RTL8111H-CG") // false
isNetworkController(String mpn)
Returns true if the MPN is an Ethernet controller (excludes WiFi).
isNetworkController("RTL8111H-CG") // true
isNetworkController("RTL8188EU") // false (WiFi, not Ethernet!)
isWiFiController(String mpn)
Returns true if the MPN is a WiFi controller.
isWiFiController("RTL8188EU") // true
isWiFiController("RTL8812AU") // true
isWiFiController("RTL8111H-CG") // false
isDisplayController(String mpn)
Returns true if the MPN is an RTD display controller.
isDisplayController("RTD2660") // true
isDisplayController("ALC892") // false
getAudioCodecGeneration(String mpn)
Returns the audio codec generation.
getAudioCodecGeneration("ALC1220") // "HD"
getAudioCodecGeneration("ALC5682") // "Mobile"
getAudioCodecGeneration("ALC892") // "Standard"
getNetworkInterfaceType(String mpn)
Returns the network interface type.
getNetworkInterfaceType("RTL8101E") // "Fast Ethernet"
getNetworkInterfaceType("RTL8111H") // "Gigabit Ethernet"
getNetworkInterfaceType("RTL8211F") // "Gigabit PHY"
getNetworkInterfaceType("RTL8188EU") // "WiFi"
Example MPNs with Full Decoding
Audio Codecs
| MPN | Series | Package | Generation | Notes | |-----|--------|---------|------------|-------| | ALC269-GR | ALC2 | QFP | Standard | Entry-level notebook audio | | ALC662-GR | ALC6 | QFP | Standard | Mid-range desktop audio | | ALC892-GR | ALC8 | QFP | Standard | High-end motherboard audio | | ALC1150-VB | ALC1 | QFN | HD | Premium PC audio | | ALC1220-VB | ALC1 | QFN | HD | Top-tier gaming audio | | ALC5640-VB | ALC5 | QFN | Mobile | Smartphone/tablet audio | | ALC5682-VF | ALC5 | QFN | Mobile | Current mobile audio |
Ethernet Controllers
| MPN | Series | Package | Interface | Notes | |-----|--------|---------|-----------|-------| | RTL8101E-GR | RTL81 | QFP | Fast Ethernet | 10/100 Mbps PCIe | | RTL8102E-GR | RTL81 | QFP | Fast Ethernet | 10/100 Mbps PCIe | | RTL8111E-VL-CG | RTL81 | QFN | Gigabit | Gen E Gigabit PCIe | | RTL8111H-CG | RTL81 | QFN | Gigabit | Latest Gigabit PCIe | | RTL8168E-VL-CG | RTL81 | QFN | Gigabit | Server Gigabit | | RTL8211E-VL-CG | RTL82 | QFN | Gigabit PHY | Integrated PHY | | RTL8211F-CG | RTL82 | QFN | Gigabit PHY | Latest PHY |
WiFi Controllers
| MPN | Series | Package | Standard | Notes | |-----|--------|---------|----------|-------| | RTL8188EU | RTL88 | - | 802.11n | USB 2.4GHz | | RTL8188EUS | RTL88 | - | 802.11n | USB 2.4GHz | | RTL8192EU | RTL88 | - | 802.11n | USB 2.4GHz dual-stream | | RTL8812AU | RTL88 | - | 802.11ac | USB dual-band | | RTL8814AU | RTL88 | - | 802.11ac | USB 4x4 MIMO |
Handler Implementation Notes
Package Code Extraction
// Realtek uses hyphen-separated suffixes
// Most MPNs: BASE-PACKAGE
// Multi-suffix: BASE-VARIANT-PACKAGE (take last segment)
int lastDashIndex = mpn.lastIndexOf('-');
String suffix = mpn.substring(lastDashIndex + 1);
return decodePackageCode(suffix);
// Package codes starting with 'V' are typically QFN variants
// Package codes starting with 'G' are typically QFP
// Package codes starting with 'B' are typically BGA
Series Extraction - WiFi Special Case
// CRITICAL: RTL8188 and RTL8192 must be checked BEFORE general RTL81xx
// They start with "RTL81" but are WiFi, not Ethernet!
if (upperMpn.startsWith("RTL8188") || upperMpn.startsWith("RTL8192")) {
return "RTL88"; // Group with WiFi series
}
// Then check RTL81 for Ethernet
if (upperMpn.startsWith("RTL81")) {
return "RTL81";
}
Component Type
RealtekHandler only supports ComponentType.IC. All Realtek products (audio codecs, Ethernet, WiFi, display controllers) are registered under the base IC type.
Related Files
- Handler:
manufacturers/RealtekHandler.java - Component types:
ComponentType.IC(all Realtek products) - Supported types:
Set.of(ComponentType.IC)(immutable)
Learnings & Quirks
- WiFi vs Ethernet disambiguation: RTL8188 and RTL8192 start with "RTL81" but are WiFi controllers, NOT Ethernet. The handler explicitly checks these before the general RTL81 Ethernet pattern.
- Package code prefixes: Most QFN variants start with 'V' (VB, VL, VS, VD, VA, VC, VF). The handler uses a switch statement with fallback to prefix matching.
- Multi-suffix MPNs: Some MPNs have multiple hyphens (e.g., RTL8211E-VL-CG). The handler extracts the LAST segment as the package code.
- Audio codec tiers: ALC1xxx is HD Audio (highest quality), ALC8xx is high-end, ALC6xx is mid-range, ALC2xx is entry-level, ALC5xxx is mobile.
- Ethernet generation letters: RTL8111 generations (E, F, G, H) are typically backward compatible. H is the latest generation.
- getSupportedTypes() uses Set.of(): Handler correctly uses immutable Set.of() instead of HashSet.
- All products registered as IC: Unlike some handlers, Realtek doesn't use manufacturer-specific ComponentTypes (no AUDIO_CODEC_REALTEK etc.). Everything is ComponentType.IC.
- No manufacturer-specific types: getManufacturerTypes() returns empty set.
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