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Crestron C2N-DAP8RC Digital Audio Processor with Room Control
Operations Guide – DOC. 8187A Digital Audio Processor with Room Control: C2N-DAP8RC • 67
Surround Sound Decoder Digital Inputs and Outputs (continued)
SIGNAL TYPE
(I/O)
FUNCTION
Freeze I The auto-detect mode will be suspended for as long as
the Freeze input is high. This allows the C2N-DAP8RC to
be put into a specific decoding mode
Store I By default, the C2N-DAP8RC operates in auto-detect
mode, whereby the decoding mode is automatically
selected depending on the incoming signal stream and the
selected source. If the program selects an alternative
decoding mode for a source, a rising edge of the Store will
save the new decoding parameters for that type of signal
stream.
Next I With each rising edge of Next, the DSP will cycle through
the different decoding modes: PCM, Dolby Digital 2ch,
Dolby Digital 2ch +Lt/Rt, Dolby Digital 5.1, Dolby Digital
5.1 EX, DTS 5.1, DTS ES Matrix, DTS ES Discrete.
ProLogic_Status O When high, indicates that Pro Logic decoding is active
Spdif_Present O When high, indicates that a valid SPDIF signal is present
on the last selected digital source when the C2N-DAP8RC
is processing an analog signal.
Left_Active
through
LFE_Active
O When high, indicates the presence of a signal coming in to
the decoder on the corresponding channel. (This does not
necessarily correspond directly to the physical outputs of
the C2N-DAP8RC.)
Surr_Active refers to the presence of a surround channel,
such as with a Pro Logic Encoded source, while
Back_Active indicates a 6.1 or 7.1 encoded signal that will
drive one or both of the back surround channels.
DTS_5.1,
DTS_Matrix
DTS_5.1_FB, ,
DTS_Matrix_FB
I
O
Control matrix generation of a rear surround channel (to
left back and right back speakers) for DTS Digital 5.1 and
DTS Digital ES Matrix encoded signals. Since the C2N-
DAP8RC contains automatic modes to control this, the
user interface should use the _fb signals to indicate the
current es matrix mode.
DD_5.1, DD_EX
DD_5.1_FB>,
DD_EX_FB
I
O
Control matrix generation of a rear surround channel (to
Sbl/Sbr) for Dolby Digital 5.1 and Dolby Digital 5.1 EX
encoded signals. Since the C2N-DAP8RC contains
automatic modes to control this, the user interface should
use the _fb signals to indicate the current Dolby Digital
matrix mode.
Surround Sound Decoder Analog Input and Output Signals
SIGNAL TYPE
(I/O)
FUNCTION
Decode_Mode
Decode_Mode_FB
I
O
The Decode_Mode input is reserved for future use.
The feedback signal indicates the current decoding
mode being used by the DSP, as follows:
Decode Mode Value
PCM 0
Dolby 1
DTS 2
Reserved 3
Analog 4
Reserved 5
(continued on next page)