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NXP Semiconductors PTN3355BS/F4MP
- Part No.:
- PTN3355BS/F4MP
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
PTN3355BS/F4MP.pdf
- Description:
- IC INTFACE SPECIALIZED 40HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,471
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Product details
Overview
PTN3355BS/F4MP from NXP Semiconductors is a VESA-compliant DisplayPort-to-VGA adapter IC with integrated 1:2 VGA switch, designed for motherboard and docking station applications. It converts 1- or 2-lane DisplayPort (1.62/2.7 Gbit/s per lane) to analog RGB video, supports WUXGA (1920×1200@60 Hz, 193 MHz pixel clock), delivers 700 mVPP DAC outputs into 75 Ω, and consumes ~200 mW in active mode.
For engineers reviewing the PTN3355BS/F4MP datasheet, PTN3355BS/F4MP pinout, PTN3355BS/F4MP application, or PTN3355BS/F4MP equivalent, this page provides verified technical context on DP-to-VGA protocol bridging, dual-channel VGA switching, I²C-over-AUX DDC handling, monitor presence detection via RGB load sensing, and firmware-upgradable configuration - all critical for notebook, desktop, and dock design-in.
Technical Context
The PTN3355BS/F4MP implements a full DisplayPort v1.2a receiver with CDR-based clock recovery, Manchester-II encoded AUX channel handling at 1 MHz, and DPCD register compliance including eDP extensions (ASSR, Enhanced Framing). Its digital subsystem extracts main stream video attributes during vertical blanking and reconstructs timing for analog output.
The analog subsystem integrates three independent 8-bit current-source DACs with external RSET-controlled reference (1.2 kΩ), generating 700 mVPP RGB signals directly compatible with double-terminated 75 Ω VGA cabling. The 1:2 VGA switch selects between channel 1 and channel 2 based on the DOCK_IN pin state, enabling seamless routing to onboard or dock connectors without discrete switching components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Main Link support | 1- or 2-lane DP at 1.62 Gbit/s (RBR) or 2.7 Gbit/s (HBR) per lane - enables compatibility with legacy and high-resolution DP sources |
| Pixel clock range | 25–240 MHz (18 bpp) or 25–180 MHz (24 bpp) - covers VGA through WUXGA and supports reduced-blanking modes |
| Analog output | Triple 8-bit DACs; 700 mVPP into 37.5 Ω (equivalent to 75 Ω doubly terminated) - meets VSIS 1.2 for direct VGA connector drive |
| Power consumption | ~200 mW at WUXGA (1920×1200@60 Hz, 18 bpp); 410 µW in low-power mode - enables thermal-constrained motherboard integration |
| Interface protocols | VESA DDC/CI, MCCS, and I²C-over-AUX compliant - allows GPU driver access to EDID and sink status via standard DP AUX channel |
| Monitor detection | Active RGB line load sensing (75 Ω termination) with HPD IRQ reporting - eliminates need for external sense circuitry |
| Package | HVQFN40, 6 mm × 6 mm × 0.85 mm, 0.5 mm pitch, lead-free - supports high-density PCB layout with exposed thermal pad |
Pinout & Package
HVQFN40 package (SOT618-1), 6 mm × 6 mm × 0.85 mm nominal, 0.5 mm pitch, with exposed die pad (GND) requiring PCB thermal vias and solder connection for electrical stability and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ML0_P / ML0_N ML1_P / ML1_N |
DisplayPort Main Link differential inputs | AC-coupled 50 Ω-terminated lanes supporting 1- or 2-lane DP link; internal equalization enables robust SI at 2.7 Gbit/s |
| AUX_P / AUX_N | DisplayPort AUX channel differential interface | Manchester-II encoded 1 MHz half-duplex bus for DPCD access and I²C-over-AUX DDC bridging |
| HPD | Hot Plug Detect output | Active-HIGH signal indicating sink readiness; driven LOW during power-up until initialization completes |
| DOCK_IN | Channel selection control | Logic-level input selecting VGA output channel: LOW = channel 1 (mainboard), HIGH = channel 2 (dock) |
| RSET | DAC reference current setting | External 1.2 kΩ ±1 % resistor to ground sets 700 mVPP output amplitude into 75 Ω load |
| RED1/GRN1/BLU1 RED2/GRN2/BLU2 |
Analog RGB video outputs | Current-source DAC outputs; each channel drives one VGA connector directly with HSYNC/VSYNC and DDC |
| OSC_IN / OSC_OUT | Crystal oscillator interface | Supports 25/27/33 MHz crystals for timing reference; frequency selected by CFG5 pin state |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1:2 VGA switch | Eliminates discrete analog switch BOM cost and board space; enables dynamic routing to mainboard or docking VGA port via DOCK_IN pin |
| Firmware upgradability | Supports Flash-over-AUX and I²C-bus updates - allows field correction of timing, EDID, or interoperability behavior without hardware change |
| VGA monitor presence detection | On-chip RGB line pulsing and load sensing replaces external comparator circuits; reports status via HPD IRQ and DPCD registers |
| DDC channel bridging | Full I²C-over-AUX implementation passes EDID reads/writes between DP source and VGA monitor - ensures plug-and-play compatibility |
| Low-power operation | 410 µW standby power and automatic VGA output shutdown when DP source is inactive - reduces system idle power |
Applications
| Desktop Motherboard Video Output | Notebook Docking Station |
|---|---|
|
Use Scenario: Integrated graphics on desktop chipset outputs DisplayPort to onboard VGA header for legacy monitor support. IC Role / Device Role / Timing Role: Protocol converter and analog video generator; recovers DP clock, decodes video stream, and generates synchronized RGB/H/V sync signals. Use Value: Enables single-chip DP-to-VGA conversion without external DACs, switches, or level shifters - reduces BOM count and layout complexity. |
Use Scenario: Docking station routes DP signal from laptop to either built-in VGA port or external dock VGA connector. IC Role / Device Role / Timing Role: Dual-channel VGA switch controller; selects active output path based on DOCK_IN logic state while maintaining identical timing across both channels. Use Value: Eliminates need for separate VGA switch IC and associated control logic - simplifies dock design and improves signal integrity via integrated routing. |
| Embedded Industrial Display Interface | Legacy Projector Adapter Module |
|
Use Scenario: Industrial PC uses PTN3355BS/F4MP to drive CRT or analog LCD displays where digital outputs are unavailable. IC Role / Device Role / Timing Role: Video format translator; maps DP packetized video to analog raster timing with precise HSYNC/VSYNC generation and RGB current drive. Use Value: Provides certified VESA-compliant conversion with load-sensing monitor detection - ensures reliable hot-plug behavior in unattended systems. |
Use Scenario: Compact DP-to-VGA dongle requires minimal footprint, low power, and robust EDID handling for projector compatibility. IC Role / Device Role / Timing Role: Self-contained adapter IC; handles DP link training, DDC negotiation, EDID passthrough, and analog output drive in one HVQFN40 package. Use Value: Achieves full VGA functionality in <1 cm² PCB area with only decoupling caps, crystal, and RSET - ideal for USB-C or mini-DP dongles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DisplayPort-to-VGA adapter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ANX7530 | Single-channel VGA output; no integrated 1:2 switch; supports eDP input in addition to DP | Lacks dual-VGA routing capability; suited for simple dongles, not docking stations requiring channel selection | Select when only one VGA output is needed and eDP source support is required |
| PS8315 | Higher power consumption (~350 mW active); no firmware upgrade capability; fixed 27 MHz oscillator | Less flexible for interoperability tuning; no Flash-over-AUX or I²C reconfiguration | Select when firmware update is unnecessary and cost sensitivity outweighs configurability needs |
Compared with ANX7530 and PS8315, PTN3355BS/F4MP uniquely combines dual-channel VGA switching, field-upgradable firmware, and ultra-low standby power - making it optimal for docking solutions requiring dynamic output routing and long-term maintainability.
Availability
PTN3355BS/F4MP is available at Aetrix Electronics and suitable for desktop motherboard video interfaces, notebook docking stations, embedded industrial display controllers, and compact DP-to-VGA adapter modules requiring stable component supply and long lifecycle support.
Supply support for PTN3355BS/F4MP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with leadership in interface, audio, and mixed-signal ICs.
The PTN3355BS/F4MP belongs to NXP's DisplayPort bridge product line, engineered specifically for high-fidelity, low-power analog video conversion in space-constrained computing platforms where DP-to-VGA interoperability and firmware adaptability are critical.
FAQ
What display resolutions does the PTN3355BS/F4MP support?
The PTN3355BS/F4MP supports resolutions from VGA (640×480@60 Hz, 25 MHz pixel clock) up to WUXGA (1920×1200@60 Hz, 193 MHz pixel clock with 18 bpp or 154 MHz with 24 bpp). It handles any resolution with pixel clocks from 25–240 MHz (18 bpp) or 25–180 MHz (24 bpp), including reduced-blanking modes like 2048×1152@60 Hz. All modes comply with VSIS 1.2 and are constrained by the bandwidth of a 2-lane DP link at 2.7 Gbit/s per lane.
How does the PTN3355BS/F4MP handle monitor detection?
The PTN3355BS/F4MP performs active load sensing on RGB lines to detect 75 Ω termination, confirming VGA monitor presence. This detection occurs periodically and triggers an HPD interrupt (IRQ_HPD) and DPCD register update when connection status changes. No external comparators or resistors are needed - the function is fully integrated and reported to the DP source via standard DisplayPort mechanisms.
Can the PTN3355BS/F4MP drive two VGA connectors simultaneously?
No, the PTN3355BS/F4MP cannot drive both VGA channels simultaneously. Its integrated 1:2 VGA switch selects *either* channel 1 (pins RED1/GRN1/BLU1/HSYNC1/VSYNC1/DDC1) *or* channel 2 (pins RED2/GRN2/BLU2/HSYNC2/VSYNC2/DDC2) based on the DOCK_IN pin state. Only one channel is active at a time, preventing signal contention and ensuring proper load matching.
What is the role of the RSET pin on the PTN3355BS/F4MP?
The RSET pin on the PTN3355BS/F4MP sets the reference current for all three 8-bit DACs. A 1.2 kΩ ±1 % resistor must be connected between RSET and ground to achieve the specified 700 mVPP analog output into a 37.5 Ω load (equivalent to a doubly terminated 75 Ω VGA cable). Deviation from this value directly scales output amplitude and affects compliance with VSIS 1.2.
Does the PTN3355BS/F4MP support firmware updates in the field?
Yes, the PTN3355BS/F4MP supports field firmware updates via two methods: Flash-over-AUX (using the DisplayPort AUX channel under Windows) and standard I²C-bus interface. This enables post-deployment correction of timing parameters, EDID behavior, or interoperability settings - critical for resolving edge-case display compatibility issues without hardware revision.
PTN3355BS/F4MP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- DisplayPort
- Interface:
- -
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 40-HVQFN (6x6)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PTN3355BS/F4MP FAQ
1.How can I place an order for PTN3355BS/F4MP through Aetrix?
Please submit a Request for Quotation (RFQ) for PTN3355BS/F4MP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PTN3355BS/F4MP reliable?
The price and inventory of PTN3355BS/F4MP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTN3355BS/F4MP is usually 5 days.
3.What payment methods are accepted for PTN3355BS/F4MP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTN3355BS/F4MP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTN3355BS/F4MP?
PTN3355BS/F4MP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTN3355BS/F4MP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PTN3355BS/F4MP?
For technical support, including PTN3355BS/F4MP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTN3355BS/F4MP requirements.
6.How does Aetrix verify that PTN3355BS/F4MP is sourced from the original manufacturer or authorized distributors?
All PTN3355BS/F4MP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PTN3355BS/F4MP meets industry standards.
7.What is the process for return or replacement of PTN3355BS/F4MP?
All PTN3355BS/F4MP units undergo pre-shipment inspection (PSI). If there is an issue with PTN3355BS/F4MP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PTN3355BS/F4MP part is unused and in its original packaging.
Return procedure for PTN3355BS/F4MP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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