Products / NTDS/ATDS

Sparrow™ AMC ATDS Serial

The AMC Airborne Tactical Data System (ATDS) Serial board installs in an industry standard Advanced Mezzanine Card (AMC) site to provide a Tactical Digital Information Link (TADIL) A serial channel compliant with MIL-STD-188-203- 1A, Appendix D2. In addition to conventional input and output operations, the ATDS serial board has a built-in passive tap mode that provides interface monitoring and data capturing capability. A software-enabled, embedded time-stamp generator tags input words with 125 ns resolution. The time-stamp clock can be synchronized between multiple boards by using a small interconnect cable and can be driven by an external clock source.

Easy to program

The ATDS serial board is easy to program and offers a variety of input and output modes to support all ATDS protocols. All the ATDS control frames and timing required to transfer individual ATDS words are generated by the hardware control logic. The software is only required to initially set the appropriate bits in the control registers to select the desired transfer method (DMA, non-DMA, Interrupt on completion, Interrupt on each word, etc.), the ATDS word type (Address/Sidetone or Data), and then enable the transfer. The interface comes standard with a driver for a number of commonly used operating systems, an excellent documentation package, and sample C language code that can be freely used in application software.

Easy to maintain

For maintenance and reliability, the ATDS Serial board has an internal loopback path that allows it to be tested without disconnecting cables. The Sparrow can be updated in the field by reconfiguring its Field Programmable Gate Array (FPGA) logic to add functionality or compensate for non-compliant interfaces. FPGA technology reduces component obsolescence, enabling the Sparrow to be deployed and supported for years to come.

Product Overview

• Compliant with MIL-STD-188-203-1A, Appendix D2
• Compliant with PCI Express Base Specification, Rev. 1.0a
• DTS or TDS operation
• Frame interval of 13.33 ms or 22.00 ms
• Full picket addressing and Sidetone support
• Data recirculation (fault) testing
• KG-40 reset signal
• LEDs for DTS/TDS Mode, Net Control, User
• Interrupt, PIO & DMA operation
• Separate DMA channels & FIFOs for inputs & outputs
• Field Programmable Gate Array (FPGA) technology
• Internal loop-back test without disconnecting ATDS cables
• Software enabled time-stamp on input words with 125 ns resolution
• Passive tap mode
• Fully software configurable (no switches or jumpers)
• Transceiver short circuit protection

General Product Features

Time-Out Features

• Time-out values in 10 μs or 1 ms increments
• Time-out between words and/or total transfer times
• Start time-out at beginning of operation or upon transfer of first word

Software Support*

Choice of driver included with board purchase:

• Windows®
• Solaris™
• LynxOS®
• Linux®
• VxWorks®

Sparrow™ ATDS Serial AMC Technical Specs

ATDS Interface

MIL-STD-188-203-1A, Appendix D2

ATDS I/O Connector

25-pin Micro D (Molex 83614-9012)

ATDS Input Buffer

64K x 32-Bit FIFO

AMC Standard

(AMC Base Specification)

PCIe Bus Interface

PICMG AMC.1 R2.0 (PCI Express on AMC Specification) (Single Lane x1)

Module Management

IPMI V1.5 (Pigeon Point MMC)

Form Factor

AMC Single Width Module
(73.5 mm x 181.5 mm)


Standard: Compact (13.88 mm)
Optional: Mid-size (18.96 mm)
Optional: Full-size (28.95 mm)

Power Consumption

Average +12V current draw: < 500 mA
Average +3.3V current draw: < 250 mA

Average Power Dissipated

< 8.0 W

Relative Humidity

5% to 90% (non-condensing)

Operating Temperature

0°C to +55°C

Storage Temperature

-20°C to +85°C


< 6 oz.

Type Title
Data Sheet Download
Manual Request Login
Software Request Login

Model Numbers

AS-12102-00 AMC, ATDS Serial with Standard Compact Faceplate
AS-12102-01 AMC, ATDS Serial with Mid-size Faceplate
AS-12102-02 AMC, ATDS Serial with Full-size Faceplate


CA-SW125-00 Cable, Sparrow PCI/PMC/AMC, F/F, 36” (for board to board testing)
CA-SW125-01 Cable, Sparrow PCI/PMC/AMC, Pigtail 36″ (stub cable – customers add their own connector to the other side)
CA-SW125-02 Cable, Sparrow PCI/PMC/AMC, Pigtail 72″ (stub cable – customers add their own connector to the other side)
CA-SW125-05 Cable, Sparrow PCI/PMC/AMC, Loopback Plug (for self-test)
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