miniDSP TOSLINK/ADAT, Руководство пользователя

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miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice
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3.4 ADAT_I2S
At 44.1 and 48 kHz, the ADAT_I2S firmware receives 8 channels on the optical input and mirrors these in I2S format
on J1. The inputs are available to the computer over USB. Eight output channels from the computer are transmitted
as ADAT on the optical output and as I2S on J1.
At 88.2 and 96 kHz, only 4 channels are received and transmitted. (Although the USB interface will state 8 channels,
only the first four can be used.)
By default, the USBStreamer uses its internal clock source. If an ADAT input is provided, UAC2 Control Panel
(Windows) or Audio MIDI Setup (Mac) can select that input as the clock source. In that case, the I2S clocks will be
synthesized from the received clock.
Table 7. ADAT_I2S firmware pinouts
J1 pin
1 ADAT Rx 1-2
2 Out 1-2
3 ADAT Rx 3-4
4 Out 3-4
5 ADAT Rx 5-6
*
6 Out 5-6
*
7 ADAT Rx 7-8
*
8 Out 7-8
*
9 MCLK
10 BCLK
11 GND
12 LRCLK
*
Channels 5 to 8 are active only at 44.1 and 48 kHz.
Figure 7. ADAT_I2S firmware signal flow