TASCAM Digital Interface

The Tascam Digital Interconnect Format (TDIF) is a proprietary format connector defined by TASCAM that is unbalanced and uses a 25-pin D-sub cable to transmit and/or receive up to eight channels of digital audio between compatible devices. Unlike the ADAT lightpipe connection, TDIF uses a bidirectional connection, meaning that only one cable is required to connect the eight ins and outs of one device or another.

The Initial specification available to implementers was called TDIF-1 Version 1.0.

The first product with this connector was the TASCAM DA-88. That implementation did not include the ability to derive a word clock synchronization between the DA-88 and another TDIF-1 device, so a BNC WORD CLOCK connection was required as well.(cite: DA-88 users manual) Later TASCAM products included the ability to sync to the TDIF-1 connection, although that still excluded the DA-88. (cite:DA-38 users manual). Other manufacturers vary in their completeness of implementation.[1]

The signal labelled "word clock" in the TDIF-1 spec is delayed 270 degrees (90 degrees advanced) with respect to the word clock visible from the BNC word clock output. This is because the TDIF-1 spec was derived from the digital audio transmitter of the NEC uPD6381 DSP used in the DA-88.

The TDIF-1 Version 1.1 specification includes parity and other channel information bits. TDIF-1 Version 2.0 includes specification for double speed and quad speed (e.g. 96 kHz and 192 kHz) rates at reduced channel counts.[2]

The TASCAM X-48 supports 96 kHz at full channel count over 6 TDIF-1 connectors, using a post Version 2.0 specification.[3]


  1. ^ See Mackie D8B FAQ
  2. ^ See tascam.com DA-78HR or DA-98HR details
  3. ^ See tascam.com X48 webpage


  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



Connect with defaultLogic
What We've Done
Led Digital Marketing Efforts of Top 500 e-Retailers.
Worked with Top Brands at Leading Agencies.
Successfully Managed Over $50 million in Digital Ad Spend.
Developed Strategies and Processes that Enabled Brands to Grow During an Economic Downturn.
Taught Advanced Internet Marketing Strategies at the graduate level.

Manage research, learning and skills at defaultlogic.com. Create an account using LinkedIn to manage and organize your omni-channel knowledge. defaultlogic.com is like a shopping cart for information -- helping you to save, discuss and share.

  Contact Us