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Texas Instruments AM3894BCYGA120
- Part No.:
- AM3894BCYGA120
- Manufacturer:
- Texas Instruments
- Category:
- Microprocessors
- Package:
- 1031-BFBGA, FCBGA
- Datasheet:
-
AM3894BCYGA120.pdf
- Description:
- IC MPU SITARA 1.2GHZ 1031FCBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AM3894BCYGA120 from Texas Instruments is a high-performance Sitara™ ARM® Cortex-A8 microprocessor (MPU) operating up to 1.20 GHz, featuring dual DDR2/DDR3 interfaces (up to DDR3-1600), integrated SGX530 3D graphics engine, and dual Gigabit Ethernet MACs. It serves as the application processor in industrial HMIs, interactive kiosks, and networked embedded systems requiring rich UI, video processing, and real-time connectivity.
For engineers reviewing the AM3894BCYGA120 datasheet, AM3894BCYGA120 pinout, AM3894BCYGA120 application, or AM3894BCYGA120 equivalent, key selection criteria include its 1031-pin FCBGA package, 25 mm × 25 mm footprint, 512KB on-chip RAM, HDVPSS subsystem with HDMI 1.3 transmitter, and PCIe 2.0 x2 lane support for peripheral expansion.
Technical Context
The AM3894BCYGA120 implements an in-order, dual-issue, superscalar ARMv7 architecture with NEON multimedia acceleration and VFPv3 floating-point compliance. Its memory subsystem includes 32KB instruction and 32KB data caches, 256KB L2 cache, 64KB on-chip RAM, and 48KB boot ROM - all optimized for deterministic real-time execution in Linux-based embedded applications.
System-level integration is enabled by the Dynamic Memory Manager (DMM) supporting programmable multi-zone memory mapping and interleaving, alongside a 128-bit L3 interconnect and dedicated DMM port for low-latency DDR access. The HDVPSS provides simultaneous SD/HD analog output and digital HDMI 1.3 transmission with HDCP, while the SGX530 graphics engine delivers up to 30 MTriangles/s for OpenGL ES 2.0 and OpenVG 1.1 rendering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-A8, up to 1.20 GHz - enables Linux/Android OS execution with hard real-time responsiveness |
| Graphics Engine | SGX530 (AM3894 only), 30 MTri/s - offloads 3D rendering and video compositing from CPU |
| Memory Interfaces | Dual 32-bit DDR2/DDR3, up to DDR3-1600 - supports 2GB total address space with low-latency access |
| Video Subsystem | HDVPSS with HDMI 1.3 transmitter, HDCP, and dual HD capture/display channels - enables single-chip multimedia terminal design |
| Connectivity | PCIe 2.0 x2 lanes, dual Gigabit EMAC (MII/GMII), dual USB 2.0 (host/device), SATA 3.0 Gbps - provides scalable I/O for industrial gateways |
| Package | FCBGA-1031, 25.0 mm × 25.0 mm, 0.65-mm pitch with Via Channel™ technology - enables 2-layer PCB routing and cost-effective layout |
| On-Chip RAM | 512KB OCM RAM - used for time-critical code/data buffering without DDR latency |
| Process Technology | 40-nm CMOS - balances performance, power efficiency, and thermal density for fanless operation |
Pinout & Package
AM3894BCYGA120 is housed in a 1031-ball Fine-Pitch Chip Scale Ball Grid Array (FCBGA) package measuring 25.0 mm × 25.0 mm with 0.65-mm ball pitch. Via Channel™ technology enables 0.8-mm PCB trace/space design rules, reducing layer count and manufacturing cost.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DEV_CLKIN | Input clock reference | 1.8-V tolerant input for system oscillator (typically 24–38.4 MHz); critical for PLL lock stability |
| DDR3_A[15:0] | Address bus | 16-bit DDR3 address lines shared with other functions; requires precise length matching for signal integrity |
| DDR3_DQ[63:0] | Data bus | 64-bit bidirectional DDR3 data interface; grouped into byte lanes with per-lane DQS strobes |
| HDMI_TX0/1/2 | HDMI pixel data | Three TMDS data channels for RGB/YUV 165-MHz pixel clock; routed as controlled-impedance differential pairs |
| HDMI_CLK | HDMI clock | TMDS clock channel; must be phase-aligned within ±10 ps of data eye center for HDMI 1.3 compliance |
| PCIe_REFCLK_P/N | PCIe reference clock | 100-MHz differential reference clock input; required for Gen2 link training and PHY initialization |
| USB0_DP/DM | USB 2.0 differential pair | Full-speed/high-speed USB device/host interface; internal PHY eliminates external transceiver |
| EMAC0_RXD[3:0] | Ethernet receive data | 4-bit nibble of GMII receive data; synchronized to EMAC0_RX_CLK for 1-Gbps operation |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Memory Manager (DMM) | Enables hardware-accelerated 2D block accesses and tiled object orientation (0°/90°/180°/270° + mirroring) for efficient video frame buffer management |
| HD Video Processing Subsystem (HDVPSS) | Supports simultaneous SD analog output and HD digital HDMI 1.3 transmission with HDCP, eliminating need for external video encoder/decoder |
| SmartReflex™ Level 2 | Delivers dynamic voltage and frequency scaling (DVFS) across seven independent power domains, reducing active power by up to 40% under variable load |
| Enhanced DMA (EDMA) | 64 independent channels + 8 QDMA channels enable zero-CPU-overhead data movement between peripherals, memory, and DDR - critical for real-time video pipelines |
| Via Channel™ BGA | Allows 0.8-mm PCB feature sizes in a 0.65-mm pitch package, enabling 2-layer board routing and lowering assembly cost versus standard BGA |
| ARM TrustZone® Security | Hardware-enforced separation of secure/non-secure worlds for trusted boot, secure firmware updates, and cryptographic key protection in industrial control applications |
Applications
| Industrial HMI Terminal | Interactive Point-of-Service Kiosk |
|---|---|
Use Scenario: Touch-enabled factory floor display with real-time machine status, alarm logging, and remote diagnostics over Ethernet. IC Role / Device Role / Timing Role: Primary application processor executing Linux Qt-based UI, managing HDMI video output, and handling dual EMAC communication with PLCs and SCADA systems. Use Value: Integrated HDVPSS and dual Gigabit Ethernet eliminate external PHYs and video encoders, reducing BOM count by ≥7 components and PCB area by 35%. | Use Scenario: Retail self-checkout station with barcode scanning, payment processing, receipt printing, and customer-facing HD video prompts. IC Role / Device Role / Timing Role: Central MPU coordinating USB HID peripherals, SATA-connected SSD storage, and HDMI-driven 1080p display with audio via McASP. Use Value: 512KB OCM RAM buffers transaction logs during power-loss events; SGX530 renders smooth animations without CPU load spikes. |
| Networked Media Gateway | Single-Board Computing Platform |
Use Scenario: IP video streaming gateway aggregating feeds from multiple HD cameras, transcoding to H.264, and forwarding over WAN via PCIe-connected cellular modem. IC Role / Device Role / Timing Role: Compute-intensive media processor leveraging NEON SIMD for video encode/decode, PCIe for high-bandwidth peripheral attachment, and SATA for local NVR storage. Use Value: Dual DDR3 interfaces sustain >2.4 GB/s memory bandwidth required for concurrent 4×1080p decode + encode pipelines. | Use Scenario: Compact, fanless development platform for embedded Linux evaluation, supporting HDMI display, USB peripherals, and Ethernet networking. IC Role / Device Role / Timing Role: Reference SoC enabling rapid prototyping of ARMv7 software stacks, with full peripheral access via GPIO, UART, SPI, and I²C expansion headers. Use Value: On-chip 48KB boot ROM and RBL support secure, fail-safe boot from NAND, eMMC, or SPI flash - accelerating bring-up and field firmware recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM-based application processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM3892BCYGA120 | No SGX530 graphics engine; identical CPU, memory, and peripheral set otherwise | Suitable for non-graphic-intensive applications like headless gateways or text-based HMIs | Select when 3D graphics acceleration is unnecessary and cost reduction is prioritized |
| AM4379BZDNA100 | Newer 45-nm ARM Cortex-A9 core at 1.0 GHz; adds PRU-ICSS for real-time I/O; no HDMI transmitter | Better suited for industrial protocols (EtherCAT, PROFIBUS) and deterministic control loops | Choose for applications requiring real-time co-processing and industrial Ethernet, accepting trade-off in multimedia capability |
Compared with AM3892BCYGA120, the AM3894BCYGA120 adds essential 3D graphics for modern UIs; versus AM4379BZDNA100, it retains HDMI output and higher CPU clock but lacks PRU-based real-time I/O - making it optimal for multimedia-rich, non-deterministic embedded computing.
Availability
AM3894BCYGA120 is available at Aetrix Electronics and suitable for industrial automation, human machine interface, and network communications processing requiring stable component supply and long-term production support.
Supply support for AM3894BCYGA120 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and wireless technologies, with leadership in industrial, automotive, and communications markets.
The AM3894BCYGA120 belongs to TI's Sitara™ ARM MPU product line, designed specifically for high-performance, multimedia-capable embedded applications where rich user interfaces, video processing, and connectivity converge in cost-sensitive, thermally constrained environments.
FAQ
What is the maximum operating frequency of the AM3894BCYGA120?
The AM3894BCYGA120 operates at up to 1.20 GHz under recommended conditions, as confirmed in the SPRS681G datasheet revision March 2015. This frequency is achieved using SmartReflex™ Level 2 adaptive voltage scaling and requires proper thermal management with ≤45°C case temperature. The AM3894BCYGA120 maintains full peripheral functionality-including dual DDR3, HDMI, and PCIe-at this speed.
Does the AM3894BCYGA120 include an integrated graphics engine?
Yes, the AM3894BCYGA120 integrates the PowerVR SGX530 3D graphics engine, delivering up to 30 million triangles per second and supporting OpenGL ES 1.1/2.0, OpenVG 1.1, and Direct3D Mobile. This capability is exclusive to the AM3894 variant - the AM3892 does not include SGX530. The AM3894BCYGA120 uses this engine to accelerate UI composition and video post-processing off the main CPU.
What package type and pin count does the AM3894BCYGA120 use?
The AM3894BCYGA120 uses a 1031-ball Fine-Pitch Chip Scale Ball Grid Array (FCBGA) package measuring 25.0 mm × 25.0 mm with 0.65-mm ball pitch. It leverages TI's Via Channel™ technology to enable 0.8-mm PCB trace/space design rules and efficient two-layer routing. This package is identical across AM3894 and AM3892 variants.
Which video output interfaces are supported by the AM3894BCYGA120?
The AM3894BCYGA120 supports HDMI 1.3 digital output (with HDCP) at up to 165-MHz pixel clock, plus simultaneous SD analog video output via integrated DACs. Its HDVPSS subsystem also provides two HD video capture channels and dual HD display channels, enabling multi-stream video processing. These capabilities are fully implemented in the AM3894BCYGA120 and documented in Section 3.7 of SPRS681G.
Is the AM3894BCYGA120 pin-compatible with other AM389x devices?
Yes, the AM3894BCYGA120 shares identical pinout, package dimensions, and ball assignment with the AM3892BCYGA120 - both are 1031-pin FCBGA (CYG) devices. Functional differences (e.g., presence of SGX530) are implemented internally; no PCB redesign is needed when migrating between these variants, provided the design accommodates the higher thermal dissipation of the AM3894BCYGA120.
AM3894BCYGA120 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 1031-BFBGA, FCBGA
- Series:
- Sitara™
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- ARM® Cortex®-A8
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 1.2GHz
- Co-Processors/DSP:
- Multimedia; NEON™ SIMD
- RAM Controllers:
- DDR2, DDR3
- Graphics Acceleration:
- Yes
- Display & Interface Controllers:
- HDMI, HDVPSS
- Ethernet:
- 10/100/1000Mbps (2)
- SATA:
- SATA 3Gbps (1)
- USB:
- USB 2.0 + PHY (2)
- Voltage - I/O:
- 1.8V, 3.3V
- Operating Temperature:
- -40°C ~ 105°C (TJ)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 1031-FCBGA (25x25)
- Additional Interfaces:
- I2C, McASP, McBSP, SPI, SD/SDIO, UART
AM3894BCYGA120 FAQ
1.How can I place an order for AM3894BCYGA120 through Aetrix?
Please submit a Request for Quotation (RFQ) for AM3894BCYGA120 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 AM3894BCYGA120 reliable?
The price and inventory of AM3894BCYGA120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AM3894BCYGA120 is usually 5 days.
3.What payment methods are accepted for AM3894BCYGA120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AM3894BCYGA120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AM3894BCYGA120?
AM3894BCYGA120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AM3894BCYGA120 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 AM3894BCYGA120?
For technical support, including AM3894BCYGA120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AM3894BCYGA120 requirements.
6.How does Aetrix verify that AM3894BCYGA120 is sourced from the original manufacturer or authorized distributors?
All AM3894BCYGA120 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 AM3894BCYGA120 meets industry standards.
7.What is the process for return or replacement of AM3894BCYGA120?
All AM3894BCYGA120 units undergo pre-shipment inspection (PSI). If there is an issue with AM3894BCYGA120, 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 AM3894BCYGA120 part is unused and in its original packaging.
Return procedure for AM3894BCYGA120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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