genesyslogic

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

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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

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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)

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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

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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"

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Port Count Reference

Series	Downstream Ports
GL850, GL852	4
GL3510, GL3520	4
GL3523	7
GL3590	4

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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

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Related Files

• Handler: manufacturers/GenesysLogicHandler.java
• Component types: IC

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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

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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

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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.