NADSI, NATO Advanced Data Storage Interface Description

NADSI Bus

NATO Advanced Data Storage Interface

STANAG-4575 Bus Description

STANAG4575 interface defines the electrical and command protocol (level 1), the protocol is the file structure (level 2), and the physical interface defined by the connector, the pin connections, and power provisions (level 3).
The three layers support a STANAG 4575 compliant Removable Memory Module (RMM), used as a data memory recorder.

Electrical and Command Protocol layer defines the signaling and protocol requirements for the command and data communications interface to the Advanced Data Storage Interface. The interface is generally based upon Fibre Channel interface standards, using an Arbitrated Loop topology and SCSI Upper Level Protocol (ULP).

The protocol interface shall conform to the requirements of the Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA, ANSI/NCITS TR19-1998) interoperability

The interface shall comply with FC-PI and FC-FS, with configuration options as specified below.

The STANAG interface supports two different connector implementations. STANAG compliant ground stations shall have mating connectors for both connector options. A 50-pin D-sub military connector (MIL-DTL-24308) is provided for implementations with minimum space provisions. Two circular military connectors (MIL-DTL-38999) are specified for applications that require the environmental capabilities of this class of connector. The two connectors separate the data from the power provisions. The specified Data and Control Interface for both configurations of the download port shall be a Fibre Channel interface utilizing a twin-axial copper pair with a differential impedance of 150 ohms as per the Fibre Channel standard.

NADSI Interface ICs

No NADSI interface ICs have identified yet, specific to NADSI.
However check the Fiber Channel page for a listing of ICs that use that interface.

{STANAG 4575 Bus Index}

NATO STANAG 4575 Standard/Specifications

The NATO Standard Agreement STANAG-4575 Standard has not been located.

Fibre Channel Description
The Fibre Channel specification uses either copper wire or fiber cabling.

{STANAG 4575 Aircraft Bus Index}

STANAG 4575 Connector Vendors

The individual connector manufacturers are listed on the pages related by the style.
Both connector types are defined by the DOD standards.

A 50-pin D-sub military connector (MIL-DTL-24308) is provided for implementations with minimum space provisions.
Or two circular military connectors (MIL-DTL-38999) are specified.

MIL-DTL-24308 Connector Dimensions
..... 50-pin D-Sub Connector Insert Arrangements [Size 20 Contacts]

MIL-DTL-38999 Connector Manufacturers
MIL-DTL-38999 normally carry copper wire but may also use fiber when the pin inserts are replaced with fiber inserts.

MIL-DTL-24308 Connector Manufacturers
These are the military versions of the standard D-sub connectors.

Commercial Connector Manufacturers {All types and styles}

Editor note; normally interfaces this old tend to be used less in newer systems, but the specification does define fiber.
So there's really to reason for the interface to be operating slower than any newer interface that has been introduced.
Although the D-sub family of connectors are falling into disuse because of their physical size.

Navigation: Engineering Home > Interface Buses > Cabled Interface Standards > NATO STANAG 4575

{Back to STANAG 4575 Interface Bus Index}


Home


Distributors	Components	Equipment	Software	Standards	Buses	Design	Reference