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Texas Instruments AM3894ACYG120
- Part No.:
- AM3894ACYG120
- Manufacturer:
- Texas Instruments
- Category:
- Microprocessors
- Package:
- 1031-BFBGA, FCBGA
- Datasheet:
-
AM3894ACYG120.pdf
- Description:
- IC MPU SITARA 1.2GHZ 1031FCBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,634
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Product details
Overview
AM3894ACYG120 from Texas Instruments is a high-performance Sitara™ ARM® Cortex-A8 microprocessor (MPU) operating up to 1.20 GHz, featuring dual DDR2/DDR3 interfaces, two Gigabit Ethernet MACs, PCIe 2.0 x2-lane root complex or endpoint capability, SATA 3.0 Gbps controller, and an integrated SGX530 3D graphics engine - deployed in industrial HMIs, interactive kiosks, and network edge computing systems.
For engineers reviewing the AM3894ACYG120 datasheet, AM3894ACYG120 pinout, AM3894ACYG120 application, or AM3894ACYG120 equivalent, key selection criteria include ARMv7 compliance, 256-KB L2 cache, HDVPSS video capture/display support, PCIe 2.0 lane configuration flexibility, and 0.65-mm pitch FCBGA-1031 package compatibility with Via Channel™ PCB routing.
Technical Context
The AM3894ACYG120 implements an in-order, dual-issue, superscalar ARM Cortex-A8 core with NEON™ multimedia acceleration and VFPv3-IEEE754 floating-point support, backed by 32-KB instruction and 32-KB data caches plus 256-KB unified L2 cache. Its memory subsystem includes a Dynamic Memory Manager (DMM) enabling programmable multi-zone memory mapping and interleaving for optimized 2D block and tiled object access.
System-level interconnect uses L3 and DMM ports: the 128-bit DMM port provides direct DDR2/DDR3 access, while the 64-bit L3 port connects peripherals including HDVPSS, EMAC, USB 2.0 PHYs, McASP, and PCIe. Power management leverages SmartReflex™ Level 2 with seven independent core power domains and AVS-capable 1.0-V core logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-A8, ARMv7 ISA, Thumb-2, Jazelle RCT, NEON SIMD, VFPv3 IEEE754 FPU |
| Max Clock Frequency | 1.20 GHz - enables real-time Linux or Android execution with deterministic interrupt latency |
| L1/L2 Cache | 32-KB I-cache + 32-KB D-cache + 256-KB L2 cache - reduces external memory bandwidth pressure |
| Graphics Engine | SGX530 GPU - delivers up to 30 MTriangles/s, supports OpenGL ES 1.1/2.0, OpenVG 1.1, Direct3D Mobile |
| Video Processing | HDVPSS with dual 165-MHz HD capture channels, dual HD display channels, HDMI 1.3 transmitter with HDCP |
| Memory Interfaces | Dual 32-bit DDR2/DDR3 (up to DDR2-800 / DDR3-1600), GPMC with 6 chip selects, 512-KB on-chip RAM |
| Connectivity | PCIe 2.0 x2 lanes (root/endpoint), 2× Gigabit EMAC (MII/GMII/MDIO), 2× USB 2.0 (host/device), 2× SATA 3.0 Gbps |
Pinout & Package
AM3894ACYG120 is housed in a 25.0 mm × 25.0 mm, 1031-pin Flip-Chip Ball Grid Array (FCBGA) package with 0.65-mm ball pitch and Via Channel™ technology enabling 0.8-mm PCB design rules and two-layer routing efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DEV_CLKIN | Reference clock input | 1.8-V tolerant input for system clock generation; supports 19.2–40 MHz crystal or oscillator |
| DDR3_A[15:0] | DDR3 address bus | 16-bit address lines shared across both DDR3 interfaces; requires matched trace length for timing closure |
| DDR3_DQ[63:0] | DDR3 data bus | 64-bit bidirectional data bus split into two 32-bit groups; supports DDR3-1600 (800 MHz) operation |
| PCIe_REFCLK_P/N | PCIe reference clock differential pair | 100-MHz differential input; must meet PCIe 2.0 jitter and skew requirements for reliable link training |
| HDMI_TX_CLK | HDMI pixel clock output | LVDS-compatible output supporting up to 165-MHz pixel rate for 1080p60 video transmission |
| EMAC0_RXD[3:0] | Gigabit Ethernet receive data | 4-bit nibble of GMII/MII receive path; synchronous to EMAC0_RX_CLK; requires controlled impedance routing |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Memory Manager (DMM) | Enables hardware-accelerated 2D tiling and interlaced memory access patterns for video frame buffers |
| HDVPSS Dual Capture/Display | Simultaneous 1080p capture and display with hardware scaling, OSD composition, and analog/digital output |
| SmartReflex Level 2 | Real-time voltage/frequency adaptation per power domain, reducing dynamic power by up to 30% under variable load |
| McASP with DIT Mode | Supports S/PDIF and AES/EBU digital audio transport via all three McASP ports for multi-channel audio I/O |
| Via Channel™ Packaging | Allows 0.8-mm PCB feature sizes in 0.65-mm pitch BGA, cutting layer count and routing complexity vs. conventional BGAs |
Applications
| Industrial HMI Panel | Network Edge Gateway |
|---|---|
Use Scenario: Touch-enabled factory floor operator interface with real-time PLC monitoring and alarm visualization. IC Role / Device Role / Timing Role: Primary application processor running Qt-based UI with hardware-accelerated graphics rendering and deterministic Ethernet I/O scheduling. Use Value: SGX530 GPU offloads UI compositing; dual EMACs enable redundant control network and diagnostics port; HDVPSS drives local VGA/HDMI display and captures camera feed for machine vision pre-processing. | Use Scenario: Secure, fanless gateway aggregating Modbus TCP, CANopen, and SNMP traffic between OT and IT networks. IC Role / Device Role / Timing Role: Central MPU executing real-time Linux with PREEMPT_RT patch, managing dual-GbE firewalling, TLS offload, and protocol translation services. Use Value: PCIe 2.0 x2 supports hardware-accelerated crypto co-processor; SATA interface enables local log storage; SmartReflex maintains thermal envelope under sustained packet forwarding load. |
| Interactive Kiosk | Video Analytics Edge Node |
Use Scenario: Public-facing retail kiosk delivering multilingual video tutorials, payment integration, and remote CMS updates. IC Role / Device Role / Timing Role: Main compute engine executing Android framework with secure boot, DRM-protected video playback, and USB peripheral host control. Use Value: HDMI 1.3 transmitter with HDCP ensures protected content delivery; dual USB 2.0 ports support card reader and printer; 512-KB on-chip RAM accelerates boot and firmware update verification. | Use Scenario: On-premise surveillance node performing motion detection, people counting, and metadata tagging before cloud upload. IC Role / Device Role / Timing Role: Vision processing hub using ARM CPU for inference orchestration and SGX530 for image preprocessing (deinterlacing, color space conversion). Use Value: HDVPSS dual 165-MHz capture channels ingest two 1080p streams simultaneously; EDMA with 64 channels enables zero-copy frame transfer to DDR; SATA interface stores raw video clips locally. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM-based MPU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM3892ACYG120 | Omits SGX530 GPU; identical CPU, memory, and peripheral set otherwise | Suitable for non-graphics workloads (e.g., headless gateways, serial protocol converters) | Select when 3D graphics acceleration is unnecessary and BOM cost reduction is prioritized |
| AM4379BZDNA10 | ARM Cortex-A9 @ 1.0 GHz, PRU-ICSS for real-time I/O, no PCIe, single EMAC, no SATA | Better suited for deterministic industrial I/O control with PRU offload, less suitable for multimedia or high-throughput storage | Prefer for applications requiring tight-loop motion control or EtherCAT slave implementation over graphics or PCIe expansion |
Compared with AM3892ACYG120, the AM3894ACYG120 adds critical GPU acceleration for UI and video pipelines; versus AM4379BZDNA10, it trades PRU real-time I/O for higher CPU throughput, PCIe expandability, and dual-GbE/SATA - making it optimal for rich-media edge nodes rather than pure control-centric designs.
Availability
AM3894ACYG120 is available at Aetrix Electronics and suitable for industrial automation, interactive kiosks, and network edge computing applications requiring stable component supply, long-term lifecycle assurance, and full documentation traceability.
Supply support for AM3894ACYG120 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The AM389x Sitara™ MPU product line targets high-performance embedded applications demanding rich OS support, advanced graphics, and heterogeneous peripheral integration - specifically designed for single-board computing, human-machine interface, and intelligent edge processing platforms.
FAQ
What is the maximum supported DDR3 speed for the AM3894ACYG120?
The AM3894ACYG120 supports DDR3-1600 (800 MHz data rate) across its dual 32-bit interfaces, delivering up to 2× 12.8 GB/s theoretical bandwidth. This requires strict adherence to TI's layout guidelines for signal integrity, including matched trace lengths, controlled impedance, and proper termination. The device's DDR3 PHY includes built-in calibration logic for reliable initialization at rated speed.
Does the AM3894ACYG120 support PCIe endpoint mode with hot-plug detection?
Yes, the AM3894ACYG120 supports PCIe 2.0 endpoint mode with full configuration space access and legacy INTx/MSI interrupt generation. However, hot-plug detection is not implemented in hardware - the device lacks native PCIe hot-plug controller logic and relies on external CPLD/FPGA or system-level software polling for slot status. Endpoint enumeration requires proper PCIe link training and configuration via the PRCM module registers.
How does the SGX530 graphics engine in the AM3894ACYG120 differ from the GPU in AM3892ACYG120?
The SGX530 3D graphics engine is exclusive to the AM3894ACYG120 and absent in the AM3892ACYG120. It delivers up to 30 MTriangles/s, supports OpenGL ES 1.1/2.0, OpenVG 1.1, and Direct3D Mobile APIs, and integrates dedicated geometry DMA for efficient vertex processing. This enables hardware-accelerated UI rendering, video post-processing, and basic gaming - capabilities unavailable on the AM3892ACYG120, which relies solely on CPU-based graphics.
Can the AM3894ACYG120 boot directly from SATA-connected storage devices?
No, the AM3894ACYG120 does not support direct SATA boot. Its ROM bootloader (RBL) only supports boot from NAND flash, NOR flash, SPI flash, SD/MMC, or UART. SATA storage must be initialized by software after boot - typically via U-Boot or Linux kernel drivers. The SATA controller is fully functional for runtime data storage but not integrated into the boot sequence.
What thermal management features are implemented in the AM3894ACYG120?
The AM3894ACYG120 incorporates SmartReflex™ Level 2 adaptive voltage scaling, seven independent power domains, and dynamic clock gating across all subsystems. Temperature monitoring is performed via on-die diode sensors read through the PRCM module. These features collectively reduce leakage and dynamic power under partial-load conditions, enabling fanless operation in ambient temperatures up to 85°C when paired with a 2-layer PCB and 1-oz copper thermal pad.
AM3894ACYG120 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:
- 0°C ~ 95°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
AM3894ACYG120 FAQ
1.How can I place an order for AM3894ACYG120 through Aetrix?
Please submit a Request for Quotation (RFQ) for AM3894ACYG120 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 AM3894ACYG120 reliable?
The price and inventory of AM3894ACYG120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AM3894ACYG120 is usually 5 days.
3.What payment methods are accepted for AM3894ACYG120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AM3894ACYG120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AM3894ACYG120?
AM3894ACYG120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AM3894ACYG120 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 AM3894ACYG120?
For technical support, including AM3894ACYG120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AM3894ACYG120 requirements.
6.How does Aetrix verify that AM3894ACYG120 is sourced from the original manufacturer or authorized distributors?
All AM3894ACYG120 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 AM3894ACYG120 meets industry standards.
7.What is the process for return or replacement of AM3894ACYG120?
All AM3894ACYG120 units undergo pre-shipment inspection (PSI). If there is an issue with AM3894ACYG120, 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 AM3894ACYG120 part is unused and in its original packaging.
Return procedure for AM3894ACYG120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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