Cantara/genesyslogic
.claude/skills/manufacturers/genesyslogic/SKILL.md
Genesys Logic MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Genesys Logic USB controller components or GenesysLogicHandler.
$ install --global
skillsauthnpx skillsauth add Cantara/lib-electronic-components genesyslogicInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Apr 16, 2026, 6:04 PM6.8s1 file scanned
SKILL.md
- name:
- genesyslogic
- description:
- Genesys Logic MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Genesys Logic USB controller components or GenesysLogicHandler.
Genesys Logic Manufacturer Skill
MPN Structure
Genesys Logic MPNs follow this general structure:
[PREFIX][SERIES][MODEL][PACKAGE][-OPTIONS]
| | | | |
| | | | +-- Optional: -QFN88, -REEL, -TR
| | | +-- Package letter: G=LQFP, Q=QFN, S=SSOP
| | +-- Model digits (varies by series)
| +-- Series: 85, 35, 32, 33, 36, 98
+-- GL prefix (all Genesys Logic products)
Example Decoding
GL850G
| | ||
| | |+-- G = LQFP package
| | +-- 0 = base model
| +-- 85 = USB 2.0 hub series
+-- GL = Genesys Logic prefix
GL3523-QFN88
| | |
| | +-- QFN88 = 88-pin QFN package
| +-- 3523 = USB 3.1 Gen 1 7-port hub
+-- GL = Genesys Logic prefix
Product Families
GL85x Series - USB 2.0 Hubs
| Part Number | Ports | Features | |-------------|-------|----------| | GL850G | 4 | USB 2.0 4-port hub, LQFP | | GL852G | 4 | USB 2.0 4-port hub (improved) |
GL35xx Series - USB 3.0/3.1 Hubs
| Part Number | Ports | USB Version | Features | |-------------|-------|-------------|----------| | GL3510 | 4 | USB 3.0 | Basic 4-port hub | | GL3520 | 4 | USB 3.0 | 4-port hub with MTT | | GL3523 | 7 | USB 3.1 Gen 1 | 7-port hub with MTT | | GL3590 | 4 | USB 3.0 | 4-port hub |
GL36xx Series - USB 3.1 Gen 2 Hubs
| Part Number | Ports | USB Version | Features | |-------------|-------|-------------|----------| | GL36xx | varies | USB 3.1 Gen 2 | 10 Gbps support |
GL32xx Series - USB 2.0 Card Readers
| Part Number | Description | Features | |-------------|-------------|----------| | GL3220 | Card reader | USB 2.0 | | GL3224 | Card reader | USB 2.0 | | GL3227 | Card reader | USB 2.0 |
GL33xx Series - USB 3.0 Card Readers
| Part Number | Description | Features | |-------------|-------------|----------| | GL33xx | Card reader | USB 3.0 |
GL98xx Series - USB Power Delivery Controllers
| Part Number | Description | Features | |-------------|-------------|----------| | GL9801 | USB PD controller | Power delivery | | GL9802 | USB PD controller | Power delivery |
Package Codes
Single-Letter Suffixes (3-digit models)
| Code | Package | Notes | |------|---------|-------| | G | LQFP | Low-profile QFP (GL850G, GL852G) | | Q | QFN | Quad flat no-lead | | S | SSOP | Shrink SOP | | T | TQFP | Thin QFP |
Hyphenated Package Codes (4-digit models)
| Code | Package | Notes | |------|---------|-------| | -QFN | QFN | Generic QFN | | -QFN88 | QFN-88 | 88-pin QFN | | -LQFP | LQFP | Generic LQFP | | -SSOP | SSOP | Generic SSOP |
Tape and Reel Suffixes
| Suffix | Meaning | |--------|---------| | -REEL | Tape and reel packaging | | -TR | Tape and reel (alternate) |
USB Version Reference
| Series | USB Version | Speed | |--------|-------------|-------| | GL85x | USB 2.0 | 480 Mbps | | GL3510, GL3520 | USB 3.0 | 5 Gbps | | GL3523, GL3590 | USB 3.1 Gen 1 | 5 Gbps | | GL36xx | USB 3.1 Gen 2 | 10 Gbps | | GL32xx | USB 2.0 | 480 Mbps | | GL33xx | USB 3.0 | 5 Gbps |
Handler Implementation Notes
Pattern Matching
// GL850/GL852 series - USB 2.0 hubs (GL850G, GL852G)
"^GL85[0-9][A-Z].*"
// GL35xx series - USB 3.0/3.1 hubs (GL3510, GL3520, GL3523, GL3590)
"^GL35[0-9]{2}.*"
// GL36xx series - USB 3.1 Gen 2 hubs
"^GL36[0-9]{2}.*"
// GL32xx series - Card readers (GL3220, GL3224, GL3227)
"^GL32[0-9]{2}.*"
// GL33xx series - USB 3.0 card readers
"^GL33[0-9]{2}.*"
// GL98xx series - USB PD controllers (GL9801, GL9802)
"^GL98[0-9]{2}.*"
Package Code Extraction
// Step 1: Remove -REEL, -TR suffixes
String cleanMpn = mpn.replaceAll("-?(REEL|TR)$", "");
// Step 2: Check for hyphenated package (GL3523-QFN88)
int hyphen = cleanMpn.indexOf('-');
if (hyphen > 0) {
String afterHyphen = cleanMpn.substring(hyphen + 1);
String packageType = afterHyphen.replaceAll("[0-9]+$", ""); // Remove pin count
return packageType; // e.g., "QFN"
}
// Step 3: Check for 3-digit + letter format (GL850G)
if (cleanMpn.matches("^GL[0-9]{3}[A-Z]$")) {
String suffix = cleanMpn.substring(cleanMpn.length() - 1);
return resolvePackageCode(suffix); // G -> LQFP
}
Series Extraction
Returns specific series identifiers:
- GL850G -> "GL850"
- GL852G -> "GL852"
- GL3510 -> "GL3510"
- GL3523 -> "GL3523"
Port Count Reference
| Series | Downstream Ports | |--------|-----------------| | GL850, GL852 | 4 | | GL3510, GL3520 | 4 | | GL3523 | 7 | | GL3590 | 4 |
MTT Support (Multiple Transaction Translator)
MTT allows better performance when multiple USB 2.0 devices are connected behind a USB 3.0 hub.
| Part | MTT Support | |------|-------------| | GL850G, GL852G | No | | GL3510 | No | | GL3520 | Yes | | GL3523 | Yes | | GL3590 | No |
Related Files
- Handler:
manufacturers/GenesysLogicHandler.java - Component types:
IC
Official Replacements
Upgrade Paths
| Original | Replacement | Notes | |----------|-------------|-------| | GL850G | GL852G | Same port count, improved features | | GL3510 | GL3520 | Same port count, adds MTT |
Package Variants
Parts with same series but different packages are interchangeable functionally:
- GL850G (LQFP) can be replaced by GL850Q (QFN) with PCB redesign
- GL3523-QFN88 is the standard package for GL3523
Common Use Cases
USB Hub Designs
| Application | Recommended Part | Notes | |-------------|-----------------|-------| | Basic USB 2.0 hub | GL852G | 4-port, improved GL850 | | USB 3.0 hub | GL3520 | 4-port with MTT | | Multi-port USB 3.0 | GL3523 | 7-port with MTT | | High-speed USB 3.1 | GL36xx | USB 3.1 Gen 2 |
Card Reader Designs
| Application | Recommended Part | Notes | |-------------|-----------------|-------| | USB 2.0 card reader | GL3220 | Basic USB 2.0 | | USB 3.0 card reader | GL33xx | Higher speed |
Learnings & Edge Cases
- 3-digit vs 4-digit: GL85x uses 3-digit model + package letter (GL850G), while GL35xx uses 4-digit model + hyphenated package (GL3523-QFN88).
- Package suffix position: For 3-digit models, package letter is concatenated; for 4-digit models, package comes after hyphen.
- Pin count in package: QFN88 means 88-pin QFN - the number is pin count, not part of package type.
- Tape and reel: -REEL and -TR suffixes should be stripped before extracting package code.
- MTT importance: For USB 3.0 hubs with many USB 2.0 devices, MTT support (GL3520, GL3523) provides better performance.
- GL852 vs GL850: GL852G is an improved version of GL850G with better compatibility - use GL852G for new designs.
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