Texas Instruments TMS320DM643AZDK6

Overview

TMS320DM643AZDK6 from Texas Instruments is a fixed-point digital signal processor (DSP) optimized for video and imaging applications, featuring a 600-MHz C64x™ DSP core delivering 4800 MIPS, dual configurable video ports (VP1/VP2) supporting ITU-R BT.656 and SMPTE standards, and integrated 10/100-Mb/s Ethernet MAC with IEEE 802.3 compliance - deployed in IP-based video surveillance encoders and medical endoscopy systems.

For engineers reviewing the TMS320DM643AZDK6 datasheet, TMS320DM643AZDK6 pinout, TMS320DM643AZDK6 application, or TMS320DM643AZDK6 equivalent, key selection criteria include real-time video processing throughput, glueless interface to video decoders/encoders, EMAC+MDIO network stack readiness, L2 cache configurability (256 KB unified RAM/cache), and 548-pin BGA (ZDK, 0.8-mm pitch) mechanical compatibility.

Technical Context

The TMS320DM643AZDK6 implements the VelociTI.2™ VLIW architecture with eight functional units (six ALUs, two multipliers), enabling four 16×16-bit or eight 8×8-bit MACs per cycle (4800 MMACS at 600 MHz). Its memory subsystem includes 16-KB L1P direct-mapped cache, 16-KB L1D 2-way set-associative cache, and 256-KB L2 unified memory/cache with flexible allocation between program/data space.

Peripherals are tightly coupled to the core via dedicated buses: VP1/VP2 support simultaneous capture/display with 5120-byte channel buffers; McASP0 provides eight serial data pins with I²S/S/PDIF/AES-3 encoding; EMAC+MDIO enables full-duplex 10/100-Mb/s networking with hardware QoS and link-state polling; and the 64-bit EMIFA interfaces gluelessly to SDRAM, ZBT SRAM, and FIFOs across 1024-MB address space.

Key Specifications

Pinout & Package

548-pin BGA package (ZDK suffix) with 0.8-mm ball pitch and 23 × 23 mm body size. Pinout defined per TI SPRS269D Rev. October 2010, Section 2.5 "Pin Assignments" and Figure 2-2 "Pinout Diagram (Top View)". Ball grid organized in 24 × 24 array with corner balls omitted; power/ground distribution follows TI's high-speed DSP layout guidelines for signal integrity and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video/imaging DSP applications.

Compared with TMS320DM642ZBK, the TMS320DM643AZDK6 adds VIC-based A/V sync and tighter 0.8-mm-pitch BGA for compact designs; versus TMS320DM648ZUT, it retains direct video port control ideal for custom sensor interfacing but lacks hardware encode acceleration and PCIe.

Availability

TMS320DM643AZDK6 is available at Aetrix Electronics and suitable for IP video surveillance encoders, medical endoscopy systems, industrial machine vision cameras, and digital signage media players requiring stable component supply across extended production lifecycles.

Supply support for TMS320DM643AZDK6 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 wireless technologies with over 50 years of innovation in DSP architectures.

The TMS320DM643AZDK6 belongs to TI's C6000™ DSP platform, specifically engineered for cost-sensitive, high-throughput video and imaging applications where real-time processing, peripheral integration, and power efficiency are critical.

FAQ

What is the maximum supported SDRAM clock frequency for the TMS320DM643AZDK6?

The TMS320DM643AZDK6 supports up to 133 MHz on its EMIFA SDRAM interface when operating at 600 MHz CPU speed, as specified in Section 5.8 of the SPRS269D datasheet. This enables 1.06 GB/s peak bandwidth for frame buffer access. The 133-MHz limit applies only to SDRAM; asynchronous memories like SRAM operate at lower frequencies (e.g., 100 MHz).

Does the TMS320DM643AZDK6 support both little-endian and big-endian data formats?

Yes, the TMS320DM643AZDK6 supports runtime-selectable endianess via the CSR register's ENDIAN bit (bit 15). This allows software to configure the C64x™ core for either little-endian (default reset state) or big-endian operation, facilitating interoperability with heterogeneous systems such as ARM hosts or legacy video codecs requiring specific byte ordering.

Can the two video ports (VP1 and VP2) on the TMS320DM643AZDK6 operate simultaneously in capture mode?

Yes, the TMS320DM643AZDK6 supports concurrent capture on both VP1 and VP2, each with independent 5120-byte channel buffers. The SPRU629 reference guide confirms dual-capture operation for multi-sensor systems (e.g., stereo vision), provided clock domains are properly isolated and EMIFA bandwidth is allocated to avoid contention with L2 cache traffic.

What is the function of the VCXO Interpolated Control (VIC) port on the TMS320DM643AZDK6?

The VIC port on the TMS320DM643AZDK6 provides digitally controlled analog output with 9–16-bit resolution, generating a single-bit interpolated D/A signal used for precise clock synchronization in audio/video systems. It enables sub-ppm jitter control for applications like lip-sync in medical video or frame-accurate genlock in broadcast equipment, as detailed in the SPRU629 reference guide.

Is the TMS320DM643AZDK6 pin-compatible with other C64x™ devices like the TMS320DM642?

No, the TMS320DM643AZDK6 is not pin-compatible with the TMS320DM642 due to differing BGA footprints: DM643AZDK6 uses a 548-pin ZDK package (0.8-mm pitch), while DM642ZBK uses a 592-pin ZBK package (1.0-mm pitch). Signal mappings also differ - e.g., DM643 integrates VIC and reassigns McASP0 pins, whereas DM642 dedicates those pins to McBSP.