Texas Instruments 66AK2H12DAAW2

Overview

66AK2H12DAAW2 from Texas Instruments is a KeyStone II multicore SoC integrating four ARM Cortex-A15 processors (up to 1.4 GHz) and eight TMS320C66x DSP cores (up to 1.2 GHz), 6 MB shared MSMC SRAM, dual 72-bit DDR3/DDR3L interfaces (1600 MHz), and a 5-port Gigabit Ethernet switch. It targets high-performance embedded infrastructure including media transcoding, wireless baseband processing, and secure packet forwarding.

For engineers reviewing the 66AK2H12DAAW2 datasheet, 66AK2H12DAAW2 pinout, 66AK2H12DAAW2 application, or 66AK2H12DAAW2 equivalent, key selection criteria include ARM+DSP heterogeneous compute density, hardware-accelerated IPsec/GTP-U/PDCP offload, IEEE 1588 time synchronization, and support for SGMII, PCIe Gen2, and Serial RapidIO 2.1 in a 1517-pin AAW package.

Technical Context

The 66AK2H12DAAW2 implements a tightly coupled heterogeneous architecture where the ARM CorePac (4× Cortex-A15, 4 MB shared L2 cache) handles system control and OS services, while eight C66x DSP CorePacs (each with 32 KB L1P, 32 KB L1D, 1024 KB local L2) execute real-time signal processing tasks. The Multicore Navigator provides 16k hardware queues and zero-overhead packet DMA between peripherals and memory subsystems.

Its Network Coprocessor integrates independent Packet Accelerator and Security Accelerator engines: the former supports transport-layer protocols (GTP-U, SCTP, PDCP) at 1.5 Mpps wire speed; the latter delivers up to 2.4 Gbps IPSec and 2.4 Gbps air ciphering using AES, SHA-2, HMAC, and 3GPP-specific algorithms - all operating independently of the main CPU cores.

Key Specifications

Pinout & Package

The 66AK2H12DAAW2 uses a 40.0 mm × 40.0 mm, 1517-ball flip-chip plastic BGA (package code AAW) with 1.0 mm ball pitch. Thermal and power delivery are optimized via dedicated CVDD, DVDD15, DVDD18, AVDDA, and VDDAHV/VDDALV rails distributed across the array.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multicore DSP+ARM applications.

Compared with 66AK2H14DAAW2, the 66AK2H12DAAW2 removes XFI pins while retaining full DSP/ARM compute and accelerator capability - making it optimal for SGMII-based infrastructure. Versus OMAP5432AAAY, it delivers >3× higher DSP throughput and integrated security/packet acceleration essential for modern telecom and analytics workloads.

Availability

66AK2H12DAAW2 is available at Aetrix Electronics and suitable for wireless infrastructure, media processing, and secure network appliance applications requiring stable component supply across extended temperature ranges (–40°C to 100°C).

Supply support for 66AK2H12DAAW2 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 connectivity technologies with leadership in DSP and ARM-based SoCs.

The 66AK2Hxx product line was designed for high-performance embedded infrastructure - specifically targeting wireless baseband, media transcoding, and secure packet processing where heterogeneous compute and hardware offload are critical.

FAQ

What is the maximum operating frequency of the ARM and DSP cores in the 66AK2H12DAAW2?

The 66AK2H12DAAW2 features four ARM Cortex-A15 cores operating at up to 1.4 GHz and eight TMS320C66x DSP cores operating at up to 1.2 GHz. These frequencies are validated across the commercial (0°C to 85°C) and extended (–40°C to 100°C) temperature ranges, with SmartReflex dynamic voltage scaling enabling power-efficient operation at rated speeds. The 66AK2H12DAAW2 maintains these clock rates without thermal throttling under specified cooling conditions.

Does the 66AK2H12DAAW2 support 10-Gigabit Ethernet?

No, the 66AK2H12DAAW2 does not support 10-Gigabit Ethernet. Its functional block diagram and device comparison table confirm that 10-GbE (XFI) ports are exclusive to the 66AK2H14 variant. In the 66AK2H12DAAW2, the corresponding XFI pins are reserved (NOPIN or RSV), and the Ethernet subsystem is limited to five 1-Gbps SGMII ports. This distinction is explicitly documented in Section 4.1 and Table 3-1 of the SPRS866G datasheet.

How many DDR3 memory channels does the 66AK2H12DAAW2 support, and what is the maximum data rate?

The 66AK2H12DAAW2 supports two independent 72-bit DDR3/DDR3L memory channels, each capable of 1600 MHz data rates (effective 12.8 GB/s per channel). Both channels include on-die termination, programmable drive strength, and full JEDEC compliance. The 66AK2H12DAAW2 datasheet specifies DDR3L support added in Revision G (October 2017), confirming backward compatibility with standard DDR3 while enabling lower-voltage operation.

What hardware accelerators are integrated into the 66AK2H12DAAW2 Network Coprocessor?

The 66AK2H12DAAW2 Network Coprocessor integrates two independent hardware engines: the Packet Accelerator, which handles transport-layer protocols (GTP-U, SCTP, PDCP, RoHC) at 1.5 million packets per second, and the Security Accelerator, which performs cryptographic operations including AES-GCM, SHA-2, HMAC, Kasumi, and SNOW 3G at up to 2.4 Gbps for both IPSec and air interface ciphering. These accelerators operate autonomously without CPU intervention, as confirmed in Sections 1.1 and 11.15–11.16 of the SPRS866G datasheet.

Is the 66AK2H12DAAW2 pin-compatible with other devices in the 66AK2Hxx family?

The 66AK2H12DAAW2 shares the same 1517-pin AAW package footprint and ball map with 66AK2H14DAAW2 and 66AK2H06DAAW2, but is not fully pin-compatible due to functional differences. Specifically, the 14 XFI pins used for 10-GbE in the 66AK2H14 are reserved (RSV) in the 66AK2H12DAAW2 and 66AK2H06DAAW2. All three variants maintain identical DDR3, PCIe, SRIO, HyperLink, and SGMII pin assignments, enabling PCB reuse where 10-GbE is not required.