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NXP Semiconductors TDA19978AHV/15C185
- Part No.:
- TDA19978AHV/15C185
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 144-LQFP Exposed Pad
- Datasheet:
-
TDA19978AHV/15C185.pdf
- Description:
- IC INTFACE SPECIALIZED 144HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,472
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Product details
Overview
TDA19978AHV/15C185 from NXP Semiconductors is a quad HDMI 1.4a-compliant receiver IC with embedded EDID memory, auto-adaptive equalizer (supporting up to 25 m cable length at 2.05 GSPS), OTP-stored HDCP 1.4 keys, and dual-supply operation (1.8 V core / 3.3 V I/O). It processes HDMI video up to 1920 × 1080p60 and UXGA (1600 × 1200p60), supports Deep Color (10-/12-bit), and outputs RGB 4:4:4 or YCbCr 4:2:2 semi-planar per ITU-R BT.601/BT.656 in AV receivers and HDMI splitters.
For engineers reviewing the TDA19978AHV/15C185 datasheet, TDA19978AHV/15C185 pinout, TDA19978AHV/15C185 application, or TDA19978AHV/15C185 equivalent, key selection considerations include HDMI 1.4a compliance, quad-input channel independence, 205 MHz TMDS clock support, HDCP 1.4 repeater capability, and I²C-controllable video timing (tsu(Q)/th(Q)) and color depth format selection.
Technical Context
The TDA19978AHV/15C185 implements four independent HDMI receiver channels with per-link auto-adaptive equalization and integrated HDCP 1.4 decryption engine with OTP key storage. Its digital processing pipeline includes color depth unpacking (8/10/12-bit), RGB↔YCbCr conversion, and programmable output formatting (RGB 4:4:4, YCbCr 4:4:4, or ITU-R BT.601/BT.656 4:2:2 semi-planar).
Audio handling includes HBR stream demultiplexing (up to 768 kHz), DSD/DST support for SACD, IEC 60958/61937 compliance, and system clock generation (128/256/512 × fs) enabling external DACs like UDA1334BTS. All configuration and status monitoring occur via a 5 V-tolerant, 400 kbit/s I²C-bus interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| HDMI Compliance | HDMI 1.4a, DVI 1.0, CEA-861-D, HDCP 1.4 - ensures interoperability with certified source/sink devices and content protection enforcement |
| Max TMDS Clock | 205 MHz - supports full bandwidth for 1080p60 Deep Color and WUXGA (1920×1200p60) with reduced blanking |
| Input Channels | Four independent HDMI inputs - enables multi-source switching in AVRs, projectors, and HDMI matrix splitters without external muxing |
| Video Output Formats | RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2 semi-planar (ITU-R BT.601/BT.656) - provides flexible interface matching to downstream video processors or FPGAs |
| Color Depth Support | 8-bit, 10-bit, or 12-bit per component - required for Deep Color display pipelines and high-fidelity video post-processing |
| Power Supplies | 1.8 V (core), 3.3 V (HDMI I/O, input, output) - mandates separate low-noise LDOs and proper sequencing during power-up |
| EDID Memory | 253 shared bytes + 3 dedicated bytes per input - allows unique EDID profiles per HDMI port in multi-display or repeater applications |
Pinout & Package
Package: HLQFP144 - thermally enhanced low-profile quad flat package (20 × 20 × 1.4 mm) with exposed die pad for improved thermal dissipation in high-power HDMI receiver applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXxA+, RXxA− RXxB+, RXxB− RXxC+, RXxC− RXxD+, RXxD− | HDMI differential input pairs (A–D) | Four independent TMDS data lanes per input; require controlled-impedance PCB routing (100 Ω differential) and termination |
| VCLK, ACLK, SYSCLK | Video, audio, and system clock outputs | LV-TTL outputs at 165 MHz (VCLK), 25 MHz (ACLK), 50 MHz (SYSCLK); drive downstream video/audio timing circuits directly |
| VP[29:0], DE, HS/HREF, VS/VREF, CS/FREF | Parallel video port signals | 29-bit wide YCbCr/RGB bus with sync signals; configurable timing (tsu(Q)/th(Q)) via I²C for FPGA or ASIC interface alignment |
| SDA/SCL, HSDAA/HSCLA, etc. | I²C-bus and DDC interfaces | 5 V-tolerant I²C slave interface (400 kbit/s) for configuration and EDID access; DDC pins support standard monitor communication |
| XTALIN/MCLK, XTALOUT | Clock oscillator terminals | Supports embedded oscillator or external crystal (27 MHz typical); critical for stable audio PLL and HDCP timing |
| PD | Power-down control | Active-HIGH logic input; reduces power consumption to 1 mW in standby mode while retaining register state |
Key Features
| Feature | Design Value |
|---|---|
| Auto-adaptive equalizer per HDMI link | Compensates for signal loss over long cables (up to 25 m @ 2.05 GSPS), eliminating need for external redrivers in cost-sensitive TV/AVR designs |
| HDCP 1.4 with OTP key storage | Hardware-enforced content protection with non-volatile key retention prevents cloning and meets licensing requirements for commercial HDMI products |
| I²C-controllable video timing (tsu(Q)/th(Q)) | Enables precise setup/hold adjustment of parallel video output to match timing margins of downstream ASICs or FPGAs without hardware changes |
| Programmable color space conversion | On-the-fly RGB ↔ YCbCr conversion eliminates need for external color-space translators in hybrid video processing systems |
| HBR audio demux (up to 768 kHz) | Extracts Dolby TrueHD and DTS-HD Master Audio streams for discrete decoding, supporting premium home theater audio architectures |
| Internal video/audio pattern generator | Facilitates factory test and debug without external signal sources, reducing production test complexity and cost |
Applications
| Home Theater AVR | HDMI Matrix Splitter |
|---|---|
Use Scenario: Multi-source HDMI switching and audio/video distribution in premium audio-video receivers. IC Role / Device Role / Timing Role: HDMI receiver and format translator - accepts four independent HDMI inputs, decrypts HDCP, converts color spaces, and outputs synchronized RGB/YCbCr for internal video processing and S/PDIF/I²S audio extraction. Use Value: Enables single-chip support for quad-input switching with Deep Color and HBR audio, reducing BOM count and PCB area versus discrete receiver + processor solutions. |
Use Scenario: Distribution of one selected HDMI source to multiple displays or recording devices with format adaptation. IC Role / Device Role / Timing Role: Repeater and format conditioner - receives, re-times, and re-transmits HDMI streams with updated EDID and HDCP management per output path. Use Value: Supports HDCP 1.4 repeater functionality and per-port EDID customization, allowing seamless integration into certified commercial distribution systems. |
| High-End Projector | LCD/Plasma TV Video Digitizer |
Use Scenario: High-resolution video capture and scaling in professional-grade projectors supporting WUXGA and 3D formats. IC Role / Device Role / Timing Role: HI-Speed video digitizer - acquires HDMI signals up to 1920×1200p60 with reduced blanking and delivers pixel-accurate YCbCr 4:2:2 output to scaler ASIC. Use Value: Built-in auto-equalization extends cable reach to projector mounting locations, while programmable tsu(Q)/th(Q) ensures reliable interface timing across varying scaler vendors. |
Use Scenario: Digital video acquisition stage in flat-panel TVs for HDMI source integration. IC Role / Device Role / Timing Role: HDMI-to-parallel video bridge - converts encrypted HDMI streams into RGB 4:4:4 or YCbCr 4:2:2 for panel timing controllers (TCON) or frame buffers. Use Value: Integrated EDID memory and I²C-configurable output format eliminate external EEPROM and level-shifters, simplifying front-end video architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si2920-A10 | Single-input HDMI 1.4 receiver; no built-in HDCP key storage (requires external EEPROM); max TMDS clock 225 MHz | Lacks quad-input capability and OTP-based HDCP security; suited for simpler, single-source endpoints | Select only when quad input, repeater functionality, or embedded HDCP keys are not required |
| ADV7611BSWZ | Quad-input HDMI 1.4 receiver with integrated CEC and 3D support; requires external HDCP keys; 225 MHz TMDS clock | Offers CEC controller and broader 3D format coverage but lacks auto-adaptive equalizer and OTP key security | Prefer when CEC management or extended 3D compatibility outweighs cable-length equalization and key security needs |
Compared with Si2920-A10 and ADV7611BSWZ, the TDA19978AHV/15C185 uniquely combines quad HDMI inputs, per-link auto-equalization for long-cable operation, and OTP-stored HDCP keys-making it optimal for secure, multi-source repeater and AVR designs where layout simplicity and content protection assurance are critical.
Availability
TDA19978AHV/15C185 is available at Aetrix Electronics and suitable for HDMI repeaters, home theater AVRs, and professional projectors requiring stable component supply, long-cable signal integrity, and certified HDCP 1.4 compliance.
Supply support for TDA19978AHV/15C185 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer electronics.
The TDA19978AHV/15C185 belongs to NXP's HDMI interface product line, designed specifically for high-fidelity, multi-source HDMI reception in premium home entertainment and professional display equipment with emphasis on HDCP security, signal integrity, and system integration efficiency.
FAQ
What HDMI standards does the TDA19978AHV/15C185 support?
The TDA19978AHV/15C185 supports HDMI 1.4a, DVI 1.0, CEA-861-D, and HDCP 1.4. It handles all HDTV formats up to 1920 × 1080p60, WUXGA (1920 × 1200p60) with reduced blanking, and PC formats up to UXGA (1600 × 1200p60). The TDA19978AHV/15C185 also supports 3D formats including Frame Packing and Top-and-Bottom at full HD resolution.
Does the TDA19978AHV/15C185 include embedded HDCP keys?
Yes, the TDA19978AHV/15C185 stores its HDCP 1.4 key set in non-volatile One Time Programmable (OTP) memory, providing hardware-level security against key extraction or duplication. This eliminates reliance on external EEPROM and satisfies HDMI Licensing LLC requirements for certified repeater and sink devices using the TDA19978AHV/15C185.
What video output formats does the TDA19978AHV/15C185 support?
The TDA19978AHV/15C185 supports RGB 4:4:4, YCbCr 4:4:4, and YCbCr 4:2:2 semi-planar output formats. The 4:2:2 mode complies with both ITU-R BT.601 and ITU-R BT.656 standards. Output bit depth (8/10/12-bit) and format are selectable via I²C-bus, with 8-bit and 10-bit modes restricted to 4:4:4 format per the TDA19978AHV/15C185 specification.
How does the auto-adaptive equalizer in the TDA19978AHV/15C185 improve signal integrity?
The TDA19978AHV/15C185 features an embedded auto-adaptive equalizer on each of its four HDMI links, dynamically compensating for high-frequency loss in long cables. Laboratory testing confirms reliable operation up to 25 m using 0.5 mm (24 AWG) cable at 2.05 GSPS. This eliminates the need for external redriver ICs in many TV, projector, and AVR designs using the TDA19978AHV/15C185.
What power supply voltages are required for the TDA19978AHV/15C185?
The TDA19978AHV/15C185 requires three independent supply domains: 1.8 V for core logic (VDDC(1V8)), 3.3 V for HDMI input receivers (VDDH(3V3)), and 3.3 V for digital I/O and video output drivers (VDDO(3V3)). Each supply has specified operating ranges (e.g., VDDH(3V3): 3.135 V to 3.465 V) and must be properly decoupled per the TDA19978AHV/15C185 datasheet layout guidelines.
TDA19978AHV/15C185 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 144-LQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- HDTV
- Interface:
- HDMI
- Voltage - Supply:
- 1.8V, 3.3V
- Supplier Device Package:
- 144-HLQFP (20x20)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TDA19978AHV/15C185 FAQ
1.How can I place an order for TDA19978AHV/15C185 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA19978AHV/15C185 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 TDA19978AHV/15C185 reliable?
The price and inventory of TDA19978AHV/15C185 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA19978AHV/15C185 is usually 5 days.
3.What payment methods are accepted for TDA19978AHV/15C185?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA19978AHV/15C185 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA19978AHV/15C185?
TDA19978AHV/15C185 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA19978AHV/15C185 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 TDA19978AHV/15C185?
For technical support, including TDA19978AHV/15C185 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA19978AHV/15C185 requirements.
6.How does Aetrix verify that TDA19978AHV/15C185 is sourced from the original manufacturer or authorized distributors?
All TDA19978AHV/15C185 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 TDA19978AHV/15C185 meets industry standards.
7.What is the process for return or replacement of TDA19978AHV/15C185?
All TDA19978AHV/15C185 units undergo pre-shipment inspection (PSI). If there is an issue with TDA19978AHV/15C185, 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 TDA19978AHV/15C185 part is unused and in its original packaging.
Return procedure for TDA19978AHV/15C185:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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