Realtek

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)

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)

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)

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)

Package Codes

QFP (Quad Flat Package)

QFN (Quad Flat No-lead)

BGA (Ball Grid Array)

Qualifiers

Series Extraction Rules

The handler extracts series using these rules:

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

Ethernet Controller Compatibility

WiFi Controller Compatibility

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

Ethernet Controllers

WiFi Controllers

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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